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KISSsoft AG News


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Recently, the Swedish rolling bearing manufacturer SKF and the Swiss gearbox design software developer KISSsoft have joined forces: The KISSsoft Release 2019 offers the possibility to calculate bearing performance by SKF through a cloud calculation service (Module WPK and WB1).

Bearing rating life and other performance parameters are calculated based on direct access to SKF bearing geometry data and SKF formulas which have been validated by extensive testing at SKF facilities. The results are separately displayed in KISSsoft and can therefore quickly be compared with ISO results.

The SKF bearing module in KISSsoft enables a machine engineer to a seamless experience when working on a new gearbox design. As a result, the prediction of bearing performance becomes more realistic, especially for the SKF Explorer range and hybrid bearings. 

This successful cooperation has also resulted in a joint article - for more info, please send an e-mail to skfbearingmodule@skf.com or info@KISSsoft.AG

Request Quotes for Tools in KISSsoft
Tuesday, 28. January 2020
A new feature allows the user to directly request quotes for tools in KISSsoft. A report is generated containing all data of the gear to be produced as well as the tool itself, which is available in KISSsoft. Currently the following tool types are supported: Hobbing Cutters, Shaper Cutters, Power Skiving Tools - others will follow. This new feature is available in Version 2019, Patch C.

New buttons have been added to the manufacturing tab with an "@" icon
, while the text on hovering over button reads "Request offer for a tool". Please see our short instructions for a better understanding of how this new feature works.

In many companies, design and manufacturing departments are separated. When a gearbox design is completed, and the designs of the components are transferred to manufacturing, it is usually too late for the modifications necessary for an optimal manufacturing process. The consequences are increased manufacturing costs. If you would like to learn more on this topic, you can find the article "Combining gear design with manufacturing process decisions" from Dr. Ing. U. Kissling, KISSsoft AG; Ing. U. Stolz and Dr. Ing. A. Türich, Gleason Corporation.

Outsource or In-house Production?
Wednesday, 22. January 2020
Whether a gearbox is to be produced in-house or outsourced is still a central question for many companies. To make the right and quick decision, gearbox software generating multiple solutions is necessary - in terms of a transmission variant calculation with cost estimations as well as web applications for external purposes.

With the automized gearbox variant calculation of KISSsys (module SYS), numerous concepts can be analyzed very efficiently and, simultaneously, the associated costs can be determined. For shafts, gears and housings, an evaluation can be made based on price specifications per kilogram. Influences on the costs (of gear dimensions, different reduction distributions, etc.) can thus be easily identified; more detailed approaches are also possible with additional inputs.

For the evaluation of purchased transmissions and for flexible consulting outside the company, solutions with an installation of the calculation software and storage of the transmission models on a central and protected server are extremely effective. Using the KISSsysWeb web application (module SYSweb), load data can be entered on the seller's computer in the form of load spectra etc. Relevant data such as service life, thermal load, reliability or the weakest element in the system can then be determined on site at the customer within a very short time.

KISSsoft, the quality software for gear calculation, offers, in addition to the calculation programs, these additional evaluation methods that are so important today, and can make a significant contribution to reliable decision-making even in the initial phase of a project. Contact us for a free trial version!

Happy Holidays!
Thursday, 19. December 2019
The year is slowly coming to an end...

We at KISSsoft would like to take this opportunity to wish you and your family peaceful holidays and a happy New Year. We would also like to thank you for your trust, your cooperation and your support!

We improve our product range every year and continuously adapt our service to the needs of our customers. We will also be at your side again in 2020 with quality and commitment and are pleased to present you our training offers for the forthcoming year: You will find introductory training courses, followed by in-depth courses, special trainings on selected topics and training courses on KISSsys. We hope that this annual programme will enable us to fulfil your wishes for training and further study.

If you want to stay in touch with us and be up to date on KISSsoft, please register for our KISSsoft News which will be sent to you approximately every three weeks or follow us on our Social Media channels: Facebook, LinkedIn and YouTube.

Our office will be closed between 24 December 2019 and 3 January 2020. Best wishes for the New Year!

Season's greetings from Bubikon,
Your KISSsoft Team

Crossed helical gear with rack
Thursday, 21. November 2019
In vehicles, the transmission from the steering wheel to the wheels is often carried out by a rack and pinion drive. In standard industrial rack and pinion drives, the angle between the pinion axis and the rack is 90°. Due to installation conditions in the vehicle, however, the axis angle between pinion and rack usually has to be adjusted. This results in a crossed helical gear pairing, with the rack having an infinitely large number of teeth.

This calculation option - crossed helical gear with rack - is available as of the KISSsoft Release 2019 (module ZE7). The theory of calculating a crossed helical gear pair with geometry and strength according to Niemann has been extended for racks. This allows the strength, service life, sliding speeds and efficiency of such a drive to be determined. In a 3D representation with a skin model, the pairing can be rolled and the contact pattern can be checked.

Such mechanisms are often used for steering systems, especially in the automotive industry. By entering the coefficient of friction and calculating the sliding speeds as well as the forces, the efficiency of the drive can be calculated and optimized.

If you would like to learn more about this topic, please visit us from 10 to 11 December 2019 at the Transmission Symposium in Berlin, booth G11. The International CTI Symposium is the international industry event in Europe for all who are interested in the latest research results in the automotive sector. We look forward to your visit!

The increasing number of electric vehicles is already having an impact on the design of transmissions. Although the number of gears in e-mobility applications is typically lower than in conventional passenger cars (see kinematics example), the requirements for low-noise and low-vibration transmissions as well as high power density and transmission efficiency are very high. For the engineer, this means a whole series of new challenges.

KISSsoft offers various calculation modules for the design and optimization of vehicle transmissions. With the help of KISSsys (modules SYS, ZPK and WPK), the entire gearbox kinematics can be set up quickly and easily along with a strength evaluation of the overall system. Rough sizing (module ZA3) and fine sizing (module ZA4) allow basic dimensioning and macro-geometry optimization of cylindrical gears. The contact analysis under load (modules ZA30, ZA33 and ZA35) enables both a specific design of flank line corrections for an optimized loaded tooth contact as well as the design of profile corrections for lower noise excitation and high efficiency.

If you would like to learn more about this topic, we will show you in a one-hour web demo on November 12, how KISSsoft can be used to specifically design and optimize transmissions for e-mobility applications. Register here today!

Today, various types of planetary gearboxes are increasingly being used in the hybridization of drive trains. Since the KISSsoft Release 2019, it is now possible to calculate double planetary stages (module ZA9). Due to their two intermeshing planets, double planetary stages achieve a subsequent reversal of the direction of rotation between the two central gears. The application in speed ranges of 7000-20000 rpm requires an exact analysis of the teeth with regard to noise as well as an evaluation of the planetary bearings concerning their service life.

The engineer can first calculate the strength of all gears and check the geometric assembly situation of the planets. Subsequently, all centre distances can be varied in the fine sizing of the double planetary stage and the influences of the meshing forces on the bearings can be compared from all possible solutions. At the same time, the minimum bearing diameters of the planetary gears and the largest possible installation space for the ring gear can be defined.

Finally, the planetary stage can also be displayed in a 3D graphic for a visual check.

Are you planning a visit to this year's MPT in Detroit, Michigan? The Motion + Power Technology Expo will take place from October 15 to October 17, 2019 and offers the opportunity to meet leading manufacturers, buyers and experts from the mechanical, electrical and fluid power industries. Our holding company, the Gleason Corporation, will also be attending this year and we look forward to accompanying them. Visit us at booth 3400 for a personal meeting.

Optimized Shaft Editor in KISSsoft
Thursday, 26. September 2019
In the KISSsoft Release 2019, the shaft editor is extended and its handling optimized (WPK module). A new tab "3D-Viewer" has been added in which the shaft, including the forces etc., can be displayed immediately during modeling. In addition, the toolbar has been expanded to complement the general context menu: the most important settings of the user interface are now directly available - for example, the moving of forces and bearings. Within the editor, shafts can now be selected with a mouse click and relocated with all associated elements.

In order to simplify the handling of the display layers for complex models in the shaft editor, the functions "Bring frontward" and "Send backward" have been integrated into the context menu of the shaft. The layers can also be edited via the newly added "Layer" column in the "Shaft overview" (displayed in the "Element editor" window when clicking on the empty area of the element tree). Additionally, an editable column "Color" has been added.

Would you like to learn more about the existing features in the shaft calculation of KISSsoft? Then take a look at our past web demo, which gives a good overview. Further general information about the shaft editor and our shaft calculation can be found on this flyer. If you would like to gain in-depth knowledge on the personalization of KISSsoft and a customized handling, then visit our workshop Customizing of KISSsoft as part of the free KUM International 2019, which will be held in English this year.

KUM International 2019 with User Lab
Wednesday, 11. September 2019
The KISSsoft User Meeting 2019 takes place from 23 to 24 October and will be held for the first time in English. We’d like to invite all our customers, partners and interested companies worldwide to join us on this special occasion. The 2-day event presents itself with a conference program and workshops focusing on the KISSsoft/KISSsys highlights of the new KISSsoft Release 2019.

On October 23, we will be offering KISSsoft software presentations held by our developers on the latest innovations in KISSsoft and KISSsys. In addition, leading companies like CNH, Atlas Copco, SKF and Humbel Gears will share their experience in designing transmissions with our software.

-> Conference Program

Test KISSdesign - the system program with Sketcher - in our User Lab. Experience the simple usability in 15 minutes and give us your feedback.

-> Sign up for the User Lab!

The first day concludes with an "Apero riche" in the historical castle in Rapperswil.

On October 24, various workshops are provided which give you the chance to deepen and broaden your user knowledge with KISSsoft and KISSsys on specific topics. During the sessions, you will work actively with the software under guidance of our experts.

-> Workshop Program

Register now for this special and exciting event! The participation is free of charge. Registration will close on October 4, 2019.

We are looking forward to welcoming you to Switzerland

Let us share knowledge!

Calculation of scuffing for bevel and hypoid gears has been enhanced in KISSsoft Release 2019 (module ZC2, ZC9) according to the current edition of the draft ISO/DTS 10300-20:2018. For the first time, this standard uses a more precise calculation of the equivalent cylindrical gear and thus enables a significantly more accurate prediction of scuffing damage, especially for hypoid gears.

Another new feature is the calculation of flank fracture for bevel and hypoid gears according to the draft standard ISO/DTS 10300-4 (2019) (module ZZ4). The calculation is based on the approach of Dr. Witzig, FZG Munich, and determines the flank fracture risk over the entire active flank, which leads to a thorough evaluation of the teeth.

It is now also possible to export the bevel gear geometry into Gleason's GEMS software or import data from this software (module CD3). This allows a bevel gear to be designed in KISSsoft and imported directly into GEMS for production to check the blanks, foot radii and other parameters. The interface allows a much more efficient procedure in the design of bevel gears.

If you would like to learn more about the possibilities in KISSsoft and our interface to GEMS, you can consult our current documentation. Please also visit us for a personal discussion from September 16 to 21, 2019 at the EMO in Hanover in Hall 26, Gleason booth D108. The EMO Hannover is an important innovation showcase and indispensable for global manufacturing technology - here you will find our joint official press release on this event.

KISSsoft now also offers contact analysis for asymmetric gears according to Langheinrich's dissertation (module ZA38). This allows, in addition to geometry and strength evaluation, the analysis of asymmetric teeth under load.

Deformation components such as bending, gear body deformation, Hertzian flattening, shaft deflection and bearing deformation are included in the calculation, which can be used for optimizing various gear features such as noise, efficiency, contact temperature and root stress with specifically selected micro-modifications.

Furthermore, the contact analysis in KISSsoft Release 2019 now enables runout errors to be taken into account. The evaluation is enhanced by graphics for iterative wear, LTCA, active diameter under load and much more. 

Would you like to learn more about this topic? If so you will find some basic information here. In addition, our developer Benjamin Mahr will give a lecture on the Derivation of tooth stiffness of asymmetric gears for loaded tooth contact analysis on September 20, 2019, at 9.00 a.m. as part of this year's VDI International Conference on Gears. We are looking forward to many listeners as well as visitors at our booth no 3.

Let Us Share Knowledge!
Wednesday, 31. July 2019
In the second half of 2019, we offer numerous opportunities to deepen your know-how with KISSsoft.

Whether in one of our regular training courses, during which you can explore our calculation programs according to your level of knowledge under the guidance of our experts and with practical examples - or in one of our web demos, which give you an understanding of a topic such as KISSdesign (in September) or e-Mobility (in November) in a compact (45 minutes) and clear form.

Finally, we will also be represented with four speeches at the International Conference on Gears in Garching from 18 to 20 September 2019: Under the topic "High Performance Plastic Gears" we compare the strength evaluation of plastic gears in order to create a new international standard. A second paper discusses the layout of profile modifications for symmetric and asymmetric plastic gears. For manufacturing, we have a lecture on the inclusion of manufacturing decisions in the gear design process. And our fourth presentation deals with the derivation of tooth stiffness of asymmetric gears based on loaded tooth contact analysis. We are looking forward to welcoming numerous listeners and visitors to our booth 3.

And last but not least: Come and visit us in Switzerland in October and take part in our KUM International 2019, which will be held in English for the first time. On October 23, we will be offering lectures by our developers on the innovations in KISSsoft and KISSsys as well as contributions from companies such as CNH, Atlas Copco, SKF, Humbel and others who use our calculation programs in their everyday work. Afterwards, there will be a workshop day on October 24th, which will conclude our KISSsoft User Meeting as an exciting event with its wide range of topics.

PS: If you still need holiday reading - here you will find a recent article from us on the "Efficient Layout Process of Cylindrical Gears with Manufacturing Constraints".

As a part of Gleason, we have a strong partner behind us when it comes to specific manufacturing know-how. For example, KISSsoft can now evaluate the feasibility for power skiving (module ZA8).

Especially in design solutions where there is little room for tool runout (for example, when the shaft shoulder is very close to the pinion), KISSsoft makes it easy to verify if the skive method is well suited for a particular application.

The most important tool parameter, the number of tool teeth, can be determined automatically. Subsequently, a special report with workpiece and tool data can be generated. This report can be transferred to Gleason when required, making the data exchange between the designer and the tool supplier much easier and less error-prone - all within a holistic working process.

Further highlights will be presented here and on our other social channels in the near future - let us stay in touch and follow us via KISSsoft News or on Facebook, LinkedIn or YouTube. We wish you nice summer days!

The new KISSsoft Release 2019 contains numerous new features, including KISSdesign, which provides the user with a tool that allows intuitive concept design on a system level. So, in addition to the elementary components (gear pair, bearing or shaft/bearing system), complete gears can now be designed in a separate module (Module KSD).

The main focus here lies on fast concept building, which is a great advantage – especially in the initial phase of a project. Further information about this new system program is available in our short video and in our web demo in September 2019.

Would you like to build different drivetrain concepts by yourself using the modeling tree and sketch functionality? Then register for the workshop on KISSdesign as part of KUM International 2019 on 24 October and create several kinematics together with our experts - starting from industrial gearboxes up to shifted transmissions.

The use of several software tools in the gearbox design process is a common challenge for engineers. The rising need for simple communication between different CAE software is becoming a trend along with the Industry 4.0.

The COM (Component Object Model) that was developed by Microsoft offers the possibility for simple communication between different programs. Our software offers the COM Basic (Module CC1) and the COM Expert (Modules CC1 + CC2) interface modules to integrate KISSsoft into the engineering process chain.

The COM Basic Interface allows simple KISSsoft calculation calls and parameter transfers as well as KISSsoft results from external programs such as MS Excel, MATLAB, C++, PHP, Java, Python etc. The COM Expert Interface additionally allows more complex KISSsoft functions such as rough and fine sizing, contact analysis etc. and output of the calculation results in simple text format.

If you want to learn more about this topic, take part in our KUM International 2019 on the 23rd to 24th of October. On the second day, we offer you a workshop: the steering of KISSsoft via the COM interface using Python or Excel VBA and the basic commands such as reading and writing parameters as well as calling advanced KISSsoft functions. So save your place and be a part of the KISSsoft User Meeting 2019!

More than 55 plastics are available for the gear design of KISSsoft. The material database of KISSsoft has been extended by additional plastics for the upcoming release 2019: Six additional gear materials from the LEHVOSS Group are now available.

Wear and static strength calculations can currently be carried out with the materials. In the course of further cooperation, the measurement of fatigue strength values will be carried out in order to be able to perform the load-bearing capacity calculation according to VDI 2736 in the future.

The material data are high-performance compounds based on PA 66, PA 46, PPS and PEEK, which are reinforced by carbon and glass fibres. In addition, the materials are tribologically modified.

The collaboration between LEHVOSS Group and KISSsoft AG will be further expanded in the future. Be curious and follow us via KISSsoft News or on Facebook or LinkedIn - we will keep you up to date!

Since the 03/2018 release, KISSsoft contact analysis also calculates the excitation force according to the FVA Report 487 (module ZA30) in addition to the transmission error. This serves as an alternative for the evaluation of the toothing with regards to vibration and noise excitation.

A modified base model is used to calculate the excitation force: for the transmission error, the calculation is based on the assumption that there is a static situation in which the gears in contact have the possibility to yield to one another. This makes it possible to compensate for deformation in the elastic elements (teeth, shafts, bearings, etc.) and adjust the continuous, externally applied torque.

The idea behind excitation force is that the gears turn as quickly as possible so that, due to the mass moment of inertia, no error is possible. This results in constant gear torsion as a boundary condition – no transmission error, but rather a change in the tooth force because of inconstant tooth rigidity. As a result, the torque changes periodically.

The topic of excitation force is also part of the special training that will be held from November 19 to 20, 2019: Contact pattern analysis for cylindrical gears, bevel gears and planetary gear units. During this training, contact analysis modules in KISSsoft will be used to teach the theoretical foundations that are required in order to efficiently size and optimize gear units with regard to noise, transmission error, as well as profile and tooth trace modifications. In addition to the training course, an optional one-day workshop will be held on November 21st, 2019 that will give participants the opportunity to individually apply and deepen what they have learned.

KISSsoft for Gear Manufacturing
Wednesday, 03. April 2019
KISSsoft provides a number of useful tools for gear manufacturing throughout the design process.

When grinding helical gears an unwanted production-related twist is generated. This twist can be simulated in advance in the KISSsoft Release 03/2018 (module ZY6), and the influence on the flank contact can be evaluated with contact analysis.

When designing hardened and ground gears, the grinding notch must be taken into account with regard to position and rounding radius in order to avoid stress concentrations. In addition to the ISO 6336 standard and FEM in 2D (module ZA24), KISSsoft also provides evaluation with FEM in 3D (module ZA37): This evaluation is based on the exact load distribution over the tooth width and enables the consideration of crowning and axial misalignments with respect to the load distribution, which results in a much more precise analysis of the stresses over the tooth width.

With the use of protuberance hobs, the grinding notch can be avoided or significantly reduced. The protuberance can be specified in KISSsoft on the reference profile as well as on the tool (hobbing cutter, cutting wheel), and checked in numerous graphics for gear teeth, tools and production.

If you would like to learn how to use the rich variety of graphics and information for your project, sign up for our web demo on April 16, 2019 for Manufacturing. Our info video gives you a brief insight into the upcoming web demo.

At the HANNOVER MESSE from the 1st to the 5th of April 2019 you can take a first look at the latest developments in KISSsoft and KISSsys.

The beta version of KISSsoft will be released for testing from April 12th. Apply as a beta tester at www.KISSsoft.AG and help us shape the upcoming release. Let us share knowledge.

We are pleased to already announce the new highlights of the next KISSsoft Release 2019, which will be available at the end of June 2019:
  • Concept design on system level
  • Rolling bearing calculation with connection to SKF cloud
  • Contact pattern analysis of asymmetrical gears
  • Crossed helical gear calculation with rack
  • Feasibility assessment for "Power Skiving"
  • and many more...
Visit us at HMI 2019 in Hall 25 at Booth G19 and get more information about the new functionalities demonstrated by our engineers. Here is a direct link to your free e-ticket. Do not forget to register before your fair attendance to receive your free trade visitor ticket.

PS: Want to know more about the KISSsoft Release 2019? The KISSsoft User Meeting KUM International 2019 will take place on the 23rd and 24th of October 2019! Save the date - we will keep you informed.

Generating Toothing Data in GDE Format
Wednesday, 13. February 2019
The VDI has been working on defining an exchange format for toothing data in Germany for quite some time now. Cylindrical gear data can now be exported in this new format, which is known as GDE or Gear Data Exchange in accordance with VDI 2610:2014 (version 2.7) from KISSsoft (module CD1). When generating data in GDE format with detailed data on profile diagrams, tooth trace diagrams, and tooth form, individual points are calculated in order to generate the profile and tooth trace diagrams. This also calculates the points for the particular tooth form.

Subsequently, you can generate a report that documents the points for the diagrams and the tooth form points. As a result, the GDE format allows the toothing data to be passed on and transferred electronically, from the Design department to Production to Quality Assurance.

From May 7 to 10, 2019, we are offering the training course Cylindrical Gear Design, Analysis and Optimization. Using practical, illustrative examples, you will learn more about how to operate the program and use the input screens for the different calculation modules in KISSsoft, enabling you to integrate the software into your project with no issues.

To model the kinematics of transmissions with power splits, which are being used in industrial applications with growing frequency, is now significantly easier using a system function in KISSsys (module SYS). The only data required is the amount of the power split: how much power is to be transferred through the different paths. The software automatically calculates the torque for every direction of the power flow.

The load spectrum calculation can be combined with all the existing system calculations using the corresponding template: efficiency calculation, modal analysis, or taking into account the housing stiffness. During this process, it is also possible to output the results for each load stage to user-defined output files. For example, this allows you to generate torque- and speed-dependent data fields with results for each speed in a vehicle gearboxes.

From March 19 to 22, 2019, we are offering a KISSsys advanced training course at our headquarters in Bubikon, Switzerland. KISSsys helps you to model and analyze entire gearboxes. This allows you to maintain an overview of the results of all machine element calculations, covering all different operating conditions.

Thank You for Your Loyalty!
Wednesday, 19. December 2018
Rome wasn't built in a day. We have big plans for the further development of KISSsoft/KISSsys, and this takes time. Therefore, we have to postpone the due date of the next release by three months. The new KISSsoft Release 2019 will not be ready as usual at the Industrial Fair in Hannover, but instead at the end of June 2019.

However, you can glimpse a first look at the new version during the HANNOVER MESSE from 1 to 5 April 2019. Our engineers will be happy to show you which innovations we have added to the software. You may be excited!

We are pleased to continue providing you with a state-of-the-art software that pioneers the calculation process of single machine elements and complete gearboxes.

Also, we would like to take this opportunity to wish you and your family Happy Holidays and a Prosperous New Year. Between December 21, 2018 and January 3, 2019, our office will be closed. We are glad to be back for you next year!

We thank you sincerely for the successful 2018 and the trust you have placed in us.

SKF and KISSsoft have worked together to create a new interface that makes it much easier to develop gear units: when designing machines, engineers can select suitable bearings based on the very latest bearing technologies in the interface. This enables KISSsoft’s customer to use these two calculations approaches: the usual ISO calculation and now, the SKF rating life based on the updated bearing data.

KISSsoft users are provided with SKF bearing performance results based on up-to-date bearing data via the SKF cloud service. The user is supplied the appropriate results in an engineering report generated by the KISSsoft calculation software. By creating this new interface, SKF and KISSsoft are responding to the request, from many engineers, for a single tool that includes many different types of design data, and design guidelines and restrictions, automatically updates them, and is documented in a user-friendly format from end to end. If you would like more information about the new interface, you will find it here.

Victoria van Camp, Member of SKF AB's Management Board and Head of Technology Development, said: "This partnership between SKF and KISSsoft shows our ability to combine our different digital platforms, to enable us to produce new developments even more rapidly than before, right in the earliest phase of development. We are contributing to making agility a reality in mechanical engineering, as well as in other sectors. This is an exciting step for both our companies. We are convinced that users will welcome it, and that it will provide a strong basis for other joint optimization projects!"

Dr. Stefan Beermann, KISSsoft AG's CEO, added: "Our collaboration with SKF gives our customers a unique way of linking a desktop application with cloud-based calculation services, combining the powerful, all-embracing features of a local installation with the flexibility and constant updates of an Internet-based service."

If you would like to test the new interface, please contact us.

Modeling gears with assembly groups
Wednesday, 28. November 2018
In the 03/2018 release of KISSsys, you have the option of “group-based modeling”. Using it, individual finished assemblies can now be extracted from existing gear designs and then combined with other groups. For example, a shaft can be cut into parts at any point and then merged together with a different shaft in a different assembly (e.g. the shaft from a Ravigneaux set).

Recurring assemblies are also offered as basic structures in a “Group Box” library. Company-specific gear components are also created and saved in this Group Box through simple modifications. This approach to modeling gear constructions in KISSsys simplifies and accelerates the entire development process. You can use this function with the KISSsys basic package (SYS).

You can learn more about group-based modeling with the Group Box in our flyer.

Our KISSsys Training Course from March 19 to 22, 2019, will teach you how to use KISSsys precisely and efficiently in your gear calculations on the basis of practical examples. Please note that this training course will be held in English.

Our modular software includes international calculation standards, as well as a multitude of sizing and optimization options for a wide variety of machine elements. The incorporation of customer experiences and our engineer’s passion for development allows us to remain at the cutting edge of technology.

KISSsoft facilitates the calculation of both strength and service life for individual machine elements, generates comprehensive documentation in multiple languages, and includes interfaces for all conventional CADs. With KISSsys, you can model complete gear units and drive trains and simultaneously analyze all gears, shafts, and bearings for strength and service life. You can also use a library with predefined gear stages to efficiently design gears to suit your needs. KISSsoft/KISSsys therefore provides all mechanical engineers with an individual solution for every calculation and design problem.

Personal contact and the transfer of knowledge and expertise are very important to us. True to our motto – “Sharing Knowledge” – we offer a range of training courses throughout the year. Register today for our next training course in English about Shaft and Bearing calculation in Mai 2019 at our headquarters in Bubikon, Switzerland. We look forward to exchanging ideas with you.

Stay up to date by following us on social media: whether on Facebook, LinkedIn, or online demos on YouTube – find out more about our wide range of activities.

Shaft Calculation and the Shaft Editor
Wednesday, 17. October 2018
Additional features have been implemented in the Shaft Editor, which make it much easier to input shafts (WPK module). You can pull on grid points to size cylinder elements, when designing shafts. The grid points can either snap to a grid or be free-floating.

You can now load a background drawing when you are remodeling existing shafts. This makes it easy to check the shaft geometries accurately, and correct them if required, which is especially useful for coaxial shafts. Other functions, such as a toolbox with extended features, the separate display of shafts, and configurable overviews in the elements editor, round off the numerous extensions to the functionality.

You will find more information about the shaft calculation in our Calculating shafts and bearings flyer.

We will run our web demo about shaft calculation for you on November 13th, 2018. It will run in German in the morning and in English in the afternoon. Register today and participate for free!

Plastics in KISSsoft
Wednesday, 26. September 2018
Nowadays, gear units are increasingly being made out of different types of plastic. In many cases, this class of materials is a good alternative to steel. However, as the strength of plastics greatly depends on their temperature, determining material properties – which are needed for sizing gears – takes a lot more time and effort than for steel gears.

In KISSsoft, 55 plastics are available for selection for sizing gears (modules Z012-17/Z070). This range of plastics covers properties from VDI 2545 and VDI 2736, 20 SABIC plastics, DSM, Victrex and newly added material data resulting from a collaboration between the University of Erlangen and German industrial partners. The list includes different types of plastic, such as non-fiber-reinforced polyamide and polyacetal, high-performance plastic with integrated lubricant and plastics with or without carbon fibers or (long) glass fibers.

Would you like to find out more about the subject "plastics"? Then register for our free web demo on September 27th. You can also find some general information in our Plastic Gears and Engineering flyer.

We also hope you can come and meet us at WindEnergy Hamburg. We will be at Stand B5.116.

Plain Bearings in Turbo Drives
Wednesday, 05. September 2018
For shafts with plain bearings, the bearing type “Plain Bearing” can now be redefined. This is especially important for turbo drives, as it allows the shaft center dislocation during operation to be precisely taken into account (module WB3).

In KISSsoft’s plain bearing calculation, the required values – especially the displacement path, attitude angle, and stiffness – are determined and can then be entered in the elements editor of the shaft.

In KISSsys, plain bearings can now be taken into account using a new template element provided for this purpose. This template element can be defined as both an individual element and as a connecting plain bearing.

Thus, a communication of the relevant values between the shaft calculation and the plain hydrodynamic bearing calculation can be generated via KISSsys.

If you would like to learn more about this system extension for KISSsoft, please visit our three-part, English-language training course Modeling of gearboxes, sytem calculations, planetary stage gearboxes from September 18 to 21, 2018, in Bubikon, Switzerland. For basic information on KISSsys, please consult our flyer.

Gear Models in 3D
Wednesday, 22. August 2018
The manufacturing of complex workpieces, such as gears on five-axis milling machines, has increasingly established itself as an alternative production process. Precise 3D data is a requirement for this type of production. KISSsoft can output exact 3D models, which can then undergo further processing with CAD and/or CAM software.

Measurement grid reports have been provided to help you measure the topology of the flank and root areas of the toothing. These grids are output directly in the correct format for Klingelnberg or Gleason measuring machines. The measurement grid calculation can be called up for cylindrical gears, helical gears, face gears, worm wheels, and involute splines (module ZZ5).

The 3D models in KISSsoft are available in both STEP and Parasolid formats. The models can also be exported as individual tooth forms for CAM generation (module CB1). 

You can find more detailed information on this topic in the "Gear Models in 3D" flyer, or participate in our Calculation of gears, shaft bearings, drives with GPK introductory training course from November 6 to 8, 2018 in Bubikon, Switzerland.

Happy summer!
Tuesday, 31. July 2018
The summer vacation is almost here, and we've already started getting ready for our upcoming events:

WindEnergy Hamburg 2018

SMK 2018
KUM KISSsoft User Meeting 2018
International CTI Symposium 2018

If you're able to attend these events, you'll be sure of a warm welcome at our stand. Please come and see us and give us your suggestions and ideas about KISSsoft or KISSsys. Nothing can replace personal contact, especially in our business, and exchanging information is also something we're keen to do - staying true to our motto: sharing knowledge.

If you have the time and inclination over the summer, we recommend you read our "Calculating Asymmetrical Toothings" flyer. The calculation to determine strength according to Langheinrich, to perform contact analysis and evaluate tooth root stress with FEM is available for asymmetrical gears in KISSsoft since Release 03/2018.

Hoping you have a great summer we look forward to seeing you again soon.

Bevel and Hypoid Gear Calculation
Wednesday, 25. July 2018
In the ISO Committee, the scuffing load capacity calculation for bevel and hypoid gears is currently in draft form, and has been implemented so in KISSsoft. This method is mainly applicable for hypoid gears, and it also takes into account effects such as the running in of GL5 oils.

The backlash (as the tooth thickness allowance) according to ISO, Gleason and Klingelnberg is now available for bevel gears, which is especially helpful in the bevel gear design process, because the manufacturing principle is not yet defined in some cases.

We invite you to attend the fifth SMK in Rapperswil between 27th and 28th November, where you can find out more about this topic. Among others, Dr. Joachim Thomas from ZG Hypoid GmbH, Mr. Frederik Mieth from the Technical University Dresden and Mr. Jürg Langhart from KISSsoft AG will give presentations on "bevel gears". You will find more information in the conference program.

You can also reserve one of the last free places for the advanced training Gear Design and Optimization, which will run from 25th to 28th September 2018.

The GEMS® & KISSsoft programs are now linked by a single, common interface, which exchanges gear tooth and system design information between the two software packages. This data exchange process enables you to evaluate and optimize all kinds of bevel and hypoid gears in a realistic way and with a closed loop between the design process and the production software.

KISSsys now also has a new template, which determines the bevel gear displacements under load. It can be used together with the interface to GEMS®, Gleason's bevel gear calculation software platform. Misalignments are determined on the principle of the perpendicular line between the two shaft axes (pinion and wheel) and can be displayed with either the E/P/G/Sigma or the V/H/J/Sigma parameters.

Would you like more information about the interface? In that case, please consult the flyer System Design Data Interface or attend our KISSsys training course, held 18 through 21 September 2018. Both are provided in English.

Bolt calculation
Thursday, 14. June 2018
The calculation of bolted joints in KISSsoft enables verification according to VDI 2230 Sheet 1 (2015) and a proof for bolts with FEM results as described in VDI 2230 Sheet 2 (2014). Supplementary calculation methods, as used in industry, have been implemented, in addition to VDI 2230. In addition to the calculation reports, the clamping diagram, assembly preloads, and the bolt geometry are shown in graphics.

KISSsoft also provides extensive databases for bolt geometries, materials etc., which you can extend by adding your own data. You can also extend the report templates by adding your own calculations. The product is rounded off by detailed documentation, consisting of a manual and graphics.

Click here to obtain more information about bolt calculation. In addition, our Tutorial No. 4 shows you how bolt calculations are performed in KISSsoft, step by step.

On April 23rd, 2018, the Industrial Fair in Hanover opens its doors. At the same time, the new version of KISSsoft 03/2018 will be released with several innovations:

•    Strength analysis for Asymmetrical Tooth Forms
•    Displacement calculation for Bevel and Hypoid Gears
•    Interface to GEMS® with Data exchange
•    Shaft editor with Background drawing
•    Calculation of Conical Compression Springs
•    and much more…

If you would like to get more information about the highlights of our software, visit us at the HANNOVER MESSE in Hall 22 at booth A64.

You can also take part in the web demos on 7th June about KISSsoft and on 21th June about KISSsys. They are held by our software specialist.

PS: Are you already a customer with maintenance contract? Then you will receive the update in May.

Calculating Asymmetrical Toothings
Thursday, 22. March 2018
The current KISSsoft version, 03/2017, provides you with a range of different options for calculating and inputting asymmetrical toothings. Gears often only rotate in one direction, so the working flank is always the same flank. Creating asymmetrical toothing is a way of optimizing this working flank in a specific manner. The greatest advantage of using asymmetrical toothing is that this reduces Hertzian pressure on the flanks that are in contact with each other. The meshing conditions can be evaluated using contact analysis, and all the values for the flank contacts in the meshing under load can be determined accurately. This approach makes it easier to take a number of different aspects into account and calculate them. (Module ZA7)

In the current release, asymmetrical toothing is still defined using pressure angle modifications. Thanks to the newly developed functions in our software, we can now offer you a more extensive system for calculating asymmetrical toothing in the new beta version. This is only one of a range of innovations and improvements that our developers have been working intensively to create, and which we will be delighted to show you in the new KISSsoft 03/2018 version at HMI 2018 in Hanover, Germany. We will be sending out more information about our presence at HMI 2018, and about our latest KISSsoft release, 03/2018, in the next few days. We’re looking forward to seeing you!

Bearing Calculations
Thursday, 01. March 2018
A new graphic in KISSsoft release 03/2017 shows the stresses in the material underneath the contact surface of rolling bearing rings and rolling bodies. The stress curves and their maximum values are also displayed in detail. This information is particularly important for large diameter bearings where the bearing rings are usually only case-hardened, and the hardness depth has to be estimated on the basis of the load. (Module WB2 and WB4)

The elasticity of the bearing rings can now also be taken into account. To do this, external loads are defined on the outside or inner ring, and the deformation of the bearing ring is determined iteratively with the deflection of the rolling bodies. As this calculation is often performed for planetary gears, the load can be transferred directly from the gear calculation. (Module WB4)

A new variation calculation for the bearing's internal geometry can now also be performed when you are sizing rolling bearings. Design parameters such as the number and diameter of rolling bodies, and also bearing parameters, such as osculation or the density of the rolling body when cages are used, can all be varied. The results are then displayed in an easy to understand list or graphic, both of which have options for filtering the data. (Module WB5)

Would you like more information about calculating bearings? Then register for our training course Shaft and Bearing Calculation and Optimization on 6th to 7th March 2018!

Training Schedule 2018
Thursday, 08. February 2018
The training schedule 2018 is now available with the objective to provide you with the best training opportunities in order to deepen and broaden your user knowledge.

The concept has not changed: you will find introductory and advanced courses, KISSsys courses and special trainings. The first dates for our trainings in English are:

Basic and Advanced Training
March 6-7, 2018 - Shaft and Bearing Calculation

KISSsys Training
March 20-23, 2018 - Modeling Gearboxes, system calculations, vehicle gearboxes

Special Training
June 5-6, 2018 - Precision mechanics: Small cylindrical and worm gears in plastic or sintered material
June 12-14, 2018 - Contact Pattern Analysis for gears and planetary gearboxes with workshop
June 19-20, 2018 - Bevel and Hypoid Gears

For more details on training programs, general information and the online registration process, please refer to our homepage.

We are looking forward to sharing knowledge with you!

The KISSsoft 03/2018 Beta Version has now been released for a test run. The final release will be available from April 23rd, 2018 - just in time for the fair in Hanover.

If you want to find out more about the new features of our software or if you are interested in a test license, please send an e-mail. We look forward to hearing your feedback!

Let us share knowledge.

Thank you for your loyalty!
Thursday, 21. December 2017
As 2017 is slowly coming to an end, we at KISSsoft AG would like to take the opportunity to wish you and your family a peaceful holiday season and all the best for the New Year!

Thank you very much for a successful year 2017 and for the confidence you have shown in us.

We wish all our users continued success in calculating with KISSsoft – and please let us know if you are particularly interested in a specific topic: We hope to be able to provide you in a timely manner with more information in one of our newsletters.

Our office will be closed from December 25th, 2017 until January 3rd, 2018. We will be there for you again in the New Year!

Warm season greetings from Bubikon, your KISSsoft team.

Plastic Materials Manager
Thursday, 30. November 2017
It is often the case that plastics manufacturers don't provide any data that is relevant for calculations when they supply their products. Fortunately, you can now use the new "Plastics Manager" in the KISSsoft Release 03/2017 to generate plastic material files from the service life measurement data gathered in gear testing according to VDI 2736 Sheet 4 (Module ZZ6).

With this calculation module, you no longer need to spend time and effort working through the test results, and it also greatly simplifies the calculation process, because all the data is brought together in a single file. With this module, you can also easily add materials to the KISSsoft database, along with the automatically generated DAT files (webdemo).

Do you want to find out more about precision engineering – small cylindrical gears and crossed helical worm gears in plastic and sinter metal? Then sign up for our training course, which runs from 5th to 6th June 2018 in Bubikon Switzerland!

KISSsys model creation
Thursday, 16. November 2017
KISSsoft Release 03/2017 has a new function, the "Groups box", which lists a selection of predefined gear stages. These gear stages can be added to the model tree structure and combined in any way you like. Gear stages such as a Ravigneaux set or a Wolfrom set are also available, to make it easier to model complex wind turbine gearboxes or shifting transmissions. You can also define your own gear stages and save them in the software. This saves a great deal of valuable time when you're modeling complex drive systems.

The way in which the model tree structure is handled in KISSsys has also been improved, so that changes (deletions, renamings etc.) can be performed at a later point in time, without any restriction (examples).

From 28th to 29th November 2017, we will be holding a training course for all KISSsys users on the topic of Planetary Stage Gearboxes. Sign up now!

Bevel gear optimization
Wednesday, 01. November 2017
You can now also optimize tooth flank and tooth profile modifications for bevel gears. Options, such as calculating the cross-variations of values and coefficients, and functions for classifying each solution with reference to different criteria and displaying the results as a graphic, all provide an excellent basis for assessing the potential for optimization. You can also optimize topological modifications in KISSsoft (Modules ZC13 and ZC33).

-> Instruction for topological modification calculation

Join our specialized training Contact Pattern Analysis for cylindrical, bevel and planetary gears + Workshop, June 12 – 14, 2018. Please register here.

KISSsys is KISSsoft‘s system add-on that enables you to model complete gear units and drive trains. KISSsoft calculates the service life and strength of the different machine elements, and transfers the results to KISSsys, where they are displayed in clear overviews. To achieve this, KISSsys brings together kinematic analysis, service life calculation, 3D graphics, and user-defined tables and dialogs.

With GEMS™ Gleason has introduced the next-generation design and manufacturing system for bevel gears. It is a powerful new software platform that provides highly desirable gear design and analysis capabilities, seamlessly connects with all your existing Gleason design software. GEMS helps optimize the complete bevel gear manufacturing process - from the idea to the finished, tested gear. 

GEMS & KISSsys programs are now linked by a direct interface to exchange gear tooth and system design data between the two software packages. GEMS supplies the values for the geometry data of the bevel gear pair, which is imported into KISSsys. KISSsoft determines the EPG misalignments for the specified load points, taking shaft bending values into account. Results are transferred to GEMS which carries out a comprehensive contact analysis.

This interface was presented for the first time at the EMO 2017 in Hannover. The next opportunity to exchange suggestions and ideas about our software packages and additional interfaces will be at the Gear Expo in Columbus OH, USA, between October 24th and 26th, 2017. We will be glad to demonstrate the whole process in detail and live at our booths #1411 and #1628.

KISSsoft's spline calculation now also includes a new function for calculating the strength of involute splined joints according to AGMA 6123-C16. The AGMA 6123 standard can also be used to take into account the effect of axis misalignment and crowning, and also to check for rim fracture: Comparative calculation.
(Part of the MPK basic package)

For springs, some tolerance standards for wire diameter have been added, and existing ones (DIN EN 10218:2012 and DIN EN 10270-3:2012) have been brought up to date.
(Part of the FPK basic package)

The DIN 31652 standard is now also available for use with hydrodynamic plain bearings. It is similar to ISO 7902, but has some additional parameters and covers a larger width/diameter range: Comparative calculation.
(Module WB3)

An introductory training course covering Understanding KISSsoft and gaining practical experience in the user interface will be held between 17th and 19th October 2017. Sign up now!

Events and Trade Fairs fall/winter 2017
Wednesday, 06. September 2017

We hope you started well after the summer holidays and are ready for the second half of 2017. We from KISSsoft AG are looking forward to meeting you at one of the upcoming events:

Dresdner Maschinenelemente Kolloquium DMK 2017

Nothing can replace personal contact, especially in our business. And exchanging information at these events is also something we're keen to do - staying true to our motto: sharing knowledge.

You are very welcome to visit us at the stand. Let us know your suggestions and wishes about our calculation software. We will be happy to discuss them with you and to inform you about all new products.

We look forward to meeting you.

The grinding process may create grinding notches in the root area of cylindrical gears. In an unfavorable situation, a grinding notch can generate significantly higher root stresses than those determined in the standard calculations.

A new function in KISSsoft now makes it possible to use a 2D FEM approach to recalculate the root stresses for cylindrical gears (with either straight or helical teeth). This approach can then be used to compare the evaluated tooth root stress with the value calculated according to the standard.
(New module ZA24)

Enclosed you will find application examples for gears with grinding notches, racks and plastic gears.

Attend our training course about Sizing and optimizing gears between 25 and 27 October 2017. Sign up now!

EMO HANNOVER, September 18th to 23rd, 2017

At this year's EMO Hannover fair, from September 18th to 23rd, 2017, KISSsoft will be present at the Gleason stand. We cordially invite you to visit us at booth D82 in hall 26.

According to this year's motto "Connecting systems for intelligent production", we will inform you about the latest interface between Gleason's GEMS and KISSsys. All details will be presented on the spot.

Come and let us know your wishes and suggestions to our software as well as if any additional interfaces are needed. We will be happy to advise and inform you about our new products and developments. We are looking forward to your visit.

Your marketing team

System Calculation with KISSsys
Wednesday, 09. August 2017

A function in KISSsoft Release 03/2017 enables you to evaluate the reliability of gear units, individual gears and rolling bearings. (Examples)
(New KLR module)
For gears, the reliability is evaluated for tooth root fracture and pitting, whereas for rolling bearings, the reliability is determined using the service life method specified in ISO 281 or ISO 16281, and the results are displayed as a graphic. The calculation is performed according to Bernd Bertsche. The well-established 3-parameter Weibull distribution method is used as the statistical model.

The way in which the model tree structure is handled in KISSsys has also been improved. Elements can now be deleted, renamed, copied, cut out and pasted in. All the references involved in your model are also displayed clearly. All the paths in the structure can be updated as needed. This has the advantage that there are no limitations on the changes you can make to the model tree structure at a later date.

We are offering an introductory course about KISSsys, in English, between 5th and 7th September 2017. Sign up now!

The summer vacation is almost here, and we've already started getting ready for our upcoming events:

Nothing can replace personal contact, especially in our business. And exchanging information at these events is also something we're keen to do - staying true to our motto: sharing knowledge.

If you're able to attend these events, you'll be sure of a warm welcome at our stand. Come to see us for a coffee, a technical discussion, or to give your feedback directly to our experts. 

You will find a link to our next events below. 

We look forward to meeting you, and wish you a pleasant and enjoyable summer!

KISSsoft version 03/2017 now includes the latest data from the SCHAEFFLER rolling bearings catalog for the INA and FAG brands.

We have added the latest bearing data for all INA and FAG rolling bearings to our software for this year’s release. The database now also contains approximately 7,000 bearings, listed in the SCHAEFFLER rolling bearing catalog. Complete X-life harmonization has been taken into account in the update.

KISSsoft and SCHAEFFLER will also ensure that future releases contain the latest bearing data.

Thanks to this collaboration with SCHAEFFLER, KISSsoft users can now design gear units with the current range of bearings and the latest bearing data.

When you are defining dimensions for shafts, the software now provides options for sizing shaft dimensions with regard to strength, and for sizing the rolling bearings with regard to bearing service life. This really cuts down the time you need to design a gear unit. Here, you can specify which priorities are to apply during sizing.
(New functionality within the basic package WPK) 

The unbalance response can now be calculated on the basis of an eccentric mass when you're calculating the shaft's vibration. This calculation returns values for the resonating frequencies and the shaft's displacement, along with values for the additional forces to which the bearing is subjected because of the imbalance. To help perform a realistic calculation of vibration, you can now enter the damping values individually.
(New module WA11)

Join us for our introductory training course about how to calculate gears, shaft and bearings, and gear units using GPK. It runs from 29th to 31st August 2017. Sign up now!

Our web demos inform you about various subjects in the calculation programs KISSsoft and KISSsys. Learn more about new developed features, about sizing and optimization strategies, see examples and much more; easily on your work desk. Our web demos are free of charge, all you need is 45 minutes time to get to know various applications of our software.

Take part in our web-based demonstration on the 16th of May which is held by one of our software specialists – there you will get more information about the features of our new KISSsoft Release 03/2017! And here you find our previous web demos. Are you interested in other topics? Please let us know. We are looking forward to your suggestions.

We are also pleased to announce that KISSsoft USA is now providing additional support through a YouTube channel. The videos are designed to help users with questions about how the software works and provide some basic engineering knowledge related to gear design. Over 20 videos are already available for viewing and cover topics such as general gear design, reverse engineering, 2D & 3D export of gear forms, shaft construction, contact analysis and report customization.

On 24th of April, the Industrial Fair in Hanover opens its doors. At the same time, the new version of KISSsoft 03/2017 will be released with a number of innovations that have been implemented. The following highlights are available amongst others:

  • Reliability evaluation of gear units on system level
  • Simplified modeling using predefined gear stages in KISSsys
  • Calculation of root stresses with FE for cylindrical gears
  • Variation calculation for the inner geometry of bearings
  • Determination of the unbalance response during the vibration calculation of shafts
  • And many more …

If you would like to learn more about the highlights of our software, visit us at the HANNOVER MESSE in Hall 25 at booth H20.

You do not have the time to visit us in Hanover? So just request a free test version or even better: Take part in our web-based demonstration on the 16th of May which is held by one of our software specialists – there you will get more information about the features of our new KISSsoft Release 03/2017!

PS: Are you already a customer with maintenance contract? Then you will receive the update in May!

For webbed gears, the deformation of the gear rim occurs in three dimensions and therefore cannot be calculated by the one-dimensional beam model approach used in the shaft calculation. This becomes even more complex if the web is displaced to the side and, consequently, the gear body is asymmetrical. For this kind of gear body the resilience in the axial plane can now be calculated with the integrated FE software. The deformations are converted to the plane of action and a more precise prediction of the misalignment of the flank line is obtained. You can check the results of the deformation calculation can be checked with the postprocessor software Salome.

The new DPK module in KISSsoft 03/2016 can be utilized to define the gear body geometry parametrically. Then with Code_Aster FE software, you can run a FE calculation and generate the influence matrix, which is used for the determination of the flank line deviation in the shaft and gear calculation – also for different load stages. The realistic evaluation of the tooth trace deformations forms the basis for a more precise calculation of the flank line correction and thus leads to a successful optimization of the gear running characteristics.

Gleason Acquires KISSsoft AG
Thursday, 16. February 2017
With confidence in the future and due to our growth strategy, we announce that the Gleason Corporation, Rochester (New York), has acquired KISSsoft AG, located in Bubikon (Switzerland).

Gleason is a leader in the development, manufacture and sale of gear production machinery, related equipment, automation solutions and plastic gears. The company’s products are used by customers in various industries, while Gleason has manufacturing operations all over the world.

KISSsoft is a leader in the development of design software for gears and power transmission systems, serving customers globally across a wide spectrum of industries.

Our KISSsoft team is looking forward to the future partnership with Gleason. Given Gleason’s mission as a Total Gear Solutions Provider, its strength in bevel gear design and its position as a world leader in gear manufacturing and metrology solutions, the potential opportunities to provide our customers with new solutions is compelling. In addition, Gleason’s global reach and long-time customer relationships will open up new doors for our products.

Our existing KISSsoft management team and entire staff will remain intact with an ever-greater focus on serving its customers. We thank you for your ongoing trust and are looking forward to a successful further collaboration with our customers, partners and friends.

The KISSsoft 03/2017 Beta Version has now been released for a test run. The final release will be available from April 24th, 2017 - just in time for the fair in Hanover.

If you want to find out more about the new features of our software or if you are interested in a test license, please send an e-mail. We look forward to hearing your feedback!

Let us share knowledge.

The consideration of the planetary carrier geometry with the parameterized approach (used for the deformation calculation and thus the calculation of the load distribution) has met with great interest in the last KISSsoft release and has proved to be very practical for the design process, as well as for the verification. For this reason, the definition possibilities in Release 03/2016 have been enhanced again. Now, cut-outs can also be specified in detail, as well as flanges with straight flanks.

The actual carrier geometry can now also be imported from a STEP model to verify the planet carrier deformation. This STEP model is automatically meshed and the supplied FE software Code Aster calculates the resulting deformations. For the review of the FE results, the graphic evaluation with the FEM post-processor Salome is now also possible directly within KISSsoft. In addition, the planetary carrier deformation can be imported directly from an ABAQUS file.

In the instruction Consideration of the Deformation of a Planet Carrier, you will find the different ways, how the misalignment due to the deformations of the carrier can be input, up to the point of the FEM calculation in the background. In doing so, the document guides you step by step through the whole process.

The contact analysis is used for further noise and strength optimization. Based on the determination of tooth stiffness according to Weber/Banaschek, the local contact is calculated considering the tooth bending. The shaft deformations and tooth corrections are also included, which allows a realistic analysis of the tooth meshing. In addition to the stress distribution and transmission error, the results also include a local lubrication gap, local wear and many other criteria.

In the calculation of the face load factor of the KISSsoft Release 03/2016, the mounting deviations can be split into proportional and constant components. Consequently, the diagrams of bending under load are more accurate, for example, if a constant displacement of bearing due to the housing tolerances is taken into account. Furthermore, a graphic has been added to the Modifications sizing function. This graphic makes it possible to perform the evaluation with three parameters, to produce a quick and transparent summary of profile/tooth trace modifications.

We say goodbye to you from the 24th December due to our winter break and are back again for you from 3rd of January 2017 newly refreshed!

At this point, we would like to thank our customers, partners and friends for a successful 2016 and the confidence you have shown in us.

Happy Holidays!

Analysis of a Drive System in KISSsys
Wednesday, 16. November 2016
In static system analysis, the deformation of the housing can be taken into account in the KISSsoft Release 03/2016, and therefore its effects on the bearings. The resulting displacements of the bearing outer rings, deform the shaft to a greater or lesser extent, and therefore have a decisive effect on the toothing contact analysis, in particular when resilient housings and powerful forces are involved.

To perform the calculation, a stiffness matrix for the housing is imported. This stiffness matrix can now be loaded directly into KISSsys in the formats used by the ABAQUS and NASTRAN and ANSYS programs.

Would you like to learn more about KISSsys in the automotive industry? Then come and visit our booth G11 at the exhibition of the CTI Automotive Transmission Symposium in Berlin. With the code D1601765/9901P1A41 you can order your ticket at the following contact ensuring you, exclusively through KISSsoft, a special price of EUR 2025.- (plus VAT) for the 6th and 7th of December.

The relative position of the pinion and the ring gear is critical in determining the wear patterns of bevel gears. To determine the bevel gear misalignment, the displacements of the shafts can be directly determined in KISSsoft Release 03/2016 by linking the shaft files to the bevel contact analysis. The VHJ displacement values are defined from the respective ratios of the two shafts with regard to the pinion as well as the ring gear. This information is then taken into account in the contact calculation (module ZC30).

The flank micro-geometry of bevel gears is dependent on the gear-cutting method which is used. The user can apply topological modifications using the topology of an existing bevel gear design. In KISSsoft (module ZC13) the running behavior of the bevel gears can then be checked using bevel gear contact analysis. Further applications using this module are the design of 3D models for the 5-axis milling process or for external FE studies.

Would you like to learn more about the application of topological modifications of bevel gears in KISSsoft? Our instruction highlights the background and use of this method, which offers great potential for practice.

A range of additional user-defined customization options are now available in the KISSsoft Release 03/2016:

The KUI – KISSsoft User Interface – can be used to tailor the input window to suit your own requirements. Tabs can be hidden, or additional, customized tabs can be added. This helps organize the working process and allows for easier maintenance of value specifications used by the engineering team.

You can also use your own variables to define new input fields. These can then be added to the KISSsoft interface and documented in the report. So, the integration of personal knowledge and company know-how is possible. These options are currently available for the most important input fields.

With the COM Interface (modules CC1 COM Interface Basic or CC2 COM Interface Expert) you can write a customized program or use a company-owned platform as the carrier for KISSsoft calculations. The calculations are running in the background, which allows for maximum user friendliness for the engineers.

Learn more about the user-defined customization of KISSsoft and take part in our web-based demonstration on the 8th of December, which is available free of charge.

The Application Area of Plastic Gears
Wednesday, 10. August 2016
The application area of plastic gears has grown significantly in the last decade. The requirements from the industry, to design stronger, lighter, quieter and more efficient gears, have also motivated plastic manufacturers to produce custom made materials.

In the last two years, the new VDI 2736 guideline for the design of plastic gears, was introduced. Unfortunately, its material data for lifetime calculations is limited. In order to design gears with custom made materials, it seems necessary to measure the fatigue data and temperatures in gear tests prior to the gear design. If you are interested in this topic: This paper (in English) presents an accelerated testing procedure for plastic gears that is based on different levels of testing.

As a supplement to the VDI 2736 guideline, the calculation of plastic deformation and wear of plastic crossed helical gears (according to Pech) has been implemented in the KISSsoft Release 03/2016.

Would you like to participate in the PolyTrib 2016? The 2nd Polymer Tribology conference is taking place in Ljubljana, Slovenia and we are glad to announce our sponsorship and participation as an exhibitor. There are also sessions dedicated to polymer gears. So come and see us or visit one of our trainings on “Small Gears in Plastic”.

Have you already been to visit us in Bubikon, in Switzerland? No? Then it is high time you did!

Nothing replaces personal contact, especially in our industry. And many things are best discussed in face-to-face meetings. To create these opportunities we offer training courses and seminars - direct transfer of knowledge, so to speak. Our priority is to promote the exchange of information, as our motto states: Let us share knowledge.

So, have a look at our 2016 Training Program and contact us if you see something that sparks your interest, or register for one of your preferred topics online right now.

And, if you arrange a personal meeting with us, you will also have an opportunity to meet the latest additions to our team, a family of alpacas who have come all the way from the Andes in South America to make their home in Bubikon, where they are always delighted to greet our visitors.

Rapid 3D Modeling in KISSsys
Tuesday, 21. June 2016
Modeling in KISSsys has been radically simplified in the latest KISSsoft Release 03/2016: Now, for example, when elements are added, the part geometries are prefilled with default values. At the same time, the shafts are positioned intelligently, to suit the gearing types involved, such as cylindrical gear pair, bevel gear or planetary stage. The user can now see the modeling progress immediately in the 3D view. Another new feature is the option of adding assemblies (such as planetary stages) to a model, and also adding shafts, if required.

So, are you interested in learning more? Then simply sign up for our free web demo about 3D modeling on 14th of July. It also covers how to take load spectra into account, and how to calculate system properties.

Would you like to find out more about KISSsys functionalities for quickly sizing entire drive trains? Our training courses (held in English) e.g. Basic Training, which runs from 30th of August to 1st of September, and Planetary Stage Gearboxes, which runs from the 6th to the 7th of December, are the ideal opportunityies to attend and learn from our software experts.

The new version of KISSsoft 03/2016 now contains very latest data from the "Rolling Bearings" catalogue.

By cooperation between SKF and KISSsoft, all future releases of KISSsoft will include an updated bearing database from SKF. The previous KISSsoft database contained 4'000 SKF bearings - the new release contains 11'500 bearings as shown in the latest catalogue.

In case of major changes to the catalogue by SKF, KISSsoft can deliver a new database to the customer with patch files.  

This collaboration ensures that KISSsoft users are able to design gearboxes using up-to-date bearing range and bearing catalogue data.

On 25th of April, the Industrial Fair in Hanover opens its doors. At the same time, the new version of KISSsoft 03/2016 will be released with a number of innovations that have been implemented. The following highlights are available amongst others:
  • Massive simplification of 3D modeling in KISSsys
  • Enhanced evaluation of planet carrier deformation
  • FE calculation of the gear body
  • VDI 2737 (2016) – load capacity of the tooth root with influence of the gear rim
  • Bevel gear contact analysis with shaft influence
  • And much more ...
If you would like to learn more about the highlights of our software, visit us at the HANNOVER MESSE in Hall 6 at booth L51.

You do not have the time to visit us in Hanover? So just request a free test version or even better: Take part in our web-based demonstration on the 19th of May which is held by one of our software specialists – there you will get more information about the features of our new KISSsoft Release 03/2016!

PS: Are you already a customer with maintenance contract? Then you will receive the update in May!

The strength calculation method specified in Lloyd's Register:2013 has now been implemented. This specific standard for ships is now widely required as a proof.

GOST 21354-87 for manufacturing tolerances, and GOST 1643-81 for tooth thickness allowances of cylindrical gears are now also available.

The existing calculation methods have been extended by the ISO 13691 standard ("high-speed special-purpose gear units").

For the VDI 2736, seven new plastics have been added for high temperature applications with SN-curve data.

Let Us Share Knowledge.
Tuesday, 23. February 2016
Our software includes internationally recognized calculation standards and various design and optimization options, based on the experience of our customers and development engineers - so that KISSsoft is always at the forefront of technology.

KISSsoft‘s specialists provide regular training courses to guarantee our users have this know-how at their fingertips:
  1. Introductory courses for quickly getting to grips with the software‘s basic functions and the standards on which it is based
  2. Advanced courses for optimization strategies
  3. Courses on selected specialist topics
Currently, an advanced course for gearbox calculation is upcoming: In a KISSsys model of an existing bevel-cylindrical-planetary transmission the gears will be optimized, the strength of shafts as well as bearings analyzed, a contact analysis carried out and the efficiency calculated.
  • In English on the 8th - 10th of March 2016 at the Cranfield University, UK
  • In German on the 23rd - 25th of May 2016 at the TZR - Technology Center Ruhr in Bochum, Germany

Design your own KISSsoft!
Monday, 25. January 2016
In KISSsoft, you can design databases, report templates, lists of cutters, display of results, and even customize the user interface in accordance with your individual needs and corporate standards:
  • Is your material list too long? You turn on and hide data base entries.
  • Do you have designed a tooth geometry, but you have no suitable tool for it? Define your list of cutters in a text file and bring more consistency in your calculations.
  • Are you missing entries in the standard reports or are they way too extensive? Do you prefer working with tables? KISSsoft offers you the possibility to adapt standard reports or even to create completely customized special reports.
  • Do you often work with Excel? Do you like writing macros? With the COM interface, you can access KISSsoft from external programs, automatically enter data, launch calculations and output results – and all this is possible in the background!
KISSsoft’s concern is a comfortable handling for its users. If you have any requests or further suggestions, please contact us anytime!

Thank you for the Cooperation!
Tuesday, 22. December 2015
Nowadays, the proportion of time which is spent for the optimization process of the micro geometry of a tooth system, is often significantly higher than that for the macro geometry. Even more the fact surprises that this topic finds almost no attention in the relevant specialist literature. If you have time and leisure during the holidays, we recommend you the article "Layout of the Gear Micro Geometry" by Ulrich Kissling.

We say goodbye to you from the 24th December due to our winter holidays and are back again for you from 4th of January 2016 newly refreshed! At this point, we would like to thank our customers, partners and friends for a successful 2015 and the confidence you have shown in us.

We wish you all a peaceful end of the year and a Happy New 2016 - to a great future collaboration!

The shaft strength calculation method according to AGMA 6101-E08/6001-E08 is now available, and includes both a static and dynamic proof.

In the static proof, which takes into account peak loads, the nominal power is multipiled with a load factor. This load factor is defined depending on the application case. The dynamic proof takes different notch factors into account and uses the shape modification hypothesis method (von Mises) to perform the evaluation.

The material properties that can be used in these calculations are derived from the material core hardness, which can now be input in KISSsoft.

Differential Bevel Gears in KISSsoft
Wednesday, 18. November 2015
The forging process used to create differential bevel gears (module ZC12) allows for a much greater degree of geometric freedom than conventional spiral tooth gears.

In the KISSsoft fine sizing functions, it is now possible to vary even more parameters, such as tooth depth or tip and root angle. Values for overlapping, demoldability etc. are also now displayed in the fine sizing results table.

A new feature here is that these parameters are displayed for the inside and back side of the tooth, in addition to the previous values in the middle. This now enables the user to check his sizing in a number of positions and select or reject specific solutions.

In the static system analysis, a new feature considers housing compliance and influence on load distribution in the gearbox as well as load reaction force iteratively (module KS4). A stiffness matrix for housing is imported for this calculation. This stiffness matrix is generated from an FE calculation such as ANSYS, ABAQUS or similar.

The resulting shaft displacements cause a misalignment of toothing and have therefore a significant effect on the gear optimization, in particular when resilient housings and high forces are involved.

A reference project using the example of a shifted transmission of a motorcycle manufacturer in cooperation with the company CADFEM was recently presented at the KISSsoft User Meeting 2015 and can be requested, in case of interest, as power point presentation (in English) at info@KISSsoft.AG.

Bolt Calculation in KISSsoft
Wednesday, 07. October 2015
The new bolt calculation guideline, VDI 2230, Sheets 1 and 2 (2014), has been implemented in KISSsoft. It includes some fundamental changes to the 2003 edition.

Besides including a variety of updated and extended tables for material properties and coefficient of friction, also cases of – over the yield point tightened – bolts are now considered in the calculation method. Moreover, the load factor in the case of tapped-thread joints are newly defined and an additional deformation component was specified for the connection area of the bolt.

Furthermore, a new FEM modeling method 'model class III' (only forces and torques, without resilience) has been added to the KISSsoft bolt module (module SPK). This function is applied, for example, to the CADFEM/KISSsoft plug-in Bolt Assessment inside ANSYS.

Enhanced Heating Calculation for Gearboxes
Thursday, 03. September 2015
The efficiency calculation and thermal analysis according to ISO/TR 14179 (module KS2) has been extended with several useful functionalities: The power loss calculation has been implemented using the contact analysis of gears, which allows the user to consider the influence of micro-geometry.

The power losses as well as the dissipated heat can be adjusted to the measurement results with individual correction factors. The outcome for this is a very reliable basis for thermal calculations of gearboxes with similar designs.

Furthermore, the possibility of the determination of the temperature course was added. The temperature course is calculated on the basis of a load spectrum or a driving cycle and allows the evaluation of the maximum temperature occurring during operation.

KISSsysWeb is a new product of KISSsoft (module SYSweb) and allows companies the calculation of KISSsys models in an easy and simple way using the Internet. This application is especially interesting for sales people who want to recalculate quickly already existing gearboxes with different operating values.

The KISSsys models are selected from the tree structure and the corresponding loads are defined. Not only the speed and torque parameters, but also load spectra as well as radial and axial loads can be specified.

With a single click, the gearbox is calculated and a report is created with service life, safeties, efficiency and other results. This report can then be further used in PDF format.

The models are located on the web server of the company’s network and the application is password-protected - so that all data is secure.

Contact us for a demonstration of the application and handling of KISSsysWeb.

The deformation of the planet carrier in planetary gear units has a significant effect on the meshing conditions between the planet gear and the sun, and between the planet gear and the internal gear. In addition to the previous functionality, in which the misalignment of the planetary gear could be specified, it is now also possible to calculate the misalignment of the planet pin on the basis of the calculative determination of the planet carrier deformation.

Either single or double walled planet carrier designs can be selected. In the process, the node coordinates and deformations can either be input directly (picked from an external FEM analysis) or determined using an integrated FE calculation. So, KISSsoft now has an option for dimensioning the planet carrier and using an open source FE library to calculate the planet pin deformation (module ZA36).

Bevel Gear Calculation in KISSsoft
Thursday, 25. June 2015
Flank modifications are usually assessed in a contact analysis under load (module ZC30), which also takes mounting deviations and tooth deformations into account. This has now also been implemented for bevel gears in KISSsoft 03/2015: The contact pattern, transmission error and stress distribution are output as results, as is the risk of flank fracture.

A method for sizing topological modifications for bevel gears is also now available (module ZC13). Starting with the measurement grid data (in Klingelnberg or Gleason format), the modification is calculated so that the bevel gear's topology is identical to the target bevel gear. This means, it is now possible to re-engineer an existing set of bevel gears, which is very useful when repairs are required or if parts need to be replaced.

The flank fracture calculation according to ISO/DTR 19042 has been added to the latest KISSsoft Release 03/2015 (module ZZ4). This type of damage manifests itself as crack formation at greater material depths. It can occur on both cylindrical gears and bevel gears. In the majority of cases, flank fracture causes the gear unit to fail completely.

The ISO Committee is currently working on the ISO/DTR 19042 calculation standard for cylindrical gears. This standard includes a method for performing the calculation with simplified load assumptions (Method B) and a local process, which makes it possible to analyze the risk of damage across the entire meshing (Method A). In the new KISSsoft Release 03/2015, both methods are available to users.

After India has been the official partner country of the industrial fair in Hanover 2015, we are pleased to announce that Kadkraft Systems Pvt. Ltd., together with EES KISSsoft GmbH is organising the First KISSsoft User Conference in India. The two day event will be held on November 25-26, 2015 in Pune.

The KISSsoft User Conference will include one day with presentations from Dr. Ulrich Kissling and Hanspeter Dinner, the second day will contain lectures by Indian gear professionals.

The goal of the event is to assemble engineers, academicians, senior management related to the gearing/transmission industry. For any further assistance, please contact simmi.gupta@kadkraft.com or raman.gupta@kadkraft.com

We are looking forward to meeting you at this exciting event!

On 13th of April, the Industrial Fair in Hanover opens its doors. At the same time, the new version of KISSsoft 03/2015 will be released with a number of innovations that have been implemented. The following highlights are available amongst others:
  • Risk assessment of flank fracture for cylindrical gears according to ISO/DTR 19042
  • Contact analysis under load for bevel gears considering flank modifications
  • Evaluation of planet carrier deformation with integrated FE calculation
  • Consideration of housing stiffness in KISSsys and its influence
  • Calculation of eigenfrequencies and modes in shaft systems
  • And many more ...
    If you would like to learn more about the highlights of our software, visit us at the HANNOVER MESSE in Hall 25 at booth H18 or ask for a free test version.

    PS: Are you already a customer with maintenance contract? Then you will receive the update still in April!

    Load Spectra in KISSsoft and KISSsys
    Thursday, 26. March 2015
    In the load spectra calculation of KISSsoft (module ZZ1 and WA8), the values for partial damage per load element are now shown in the report. Also the iteration and the calculation speed has been improved.

    Furthermore, it is currently possible to consider the load and speed direction of each element separately. For the flank calculation, optionally just positive load elements can be considered. For the root calculation, the alternating bending factor is considered with 0.7.

    Finally, the load spectra calculation is also available for beveloid gears.

    The calculation of load spectra in KISSsys (module SYS or GPK) can now be performed for several kinematics in one step. The values of the load elements are shown in an additional table.

    In the upcoming KISSsoft version 03/2015 which is released at the industrial fair in Hanover in April, additional detailed information about damage calculation of gears, shafts and bearings are available. Keep on being curious and visit us at the HANNOVER MESSE 2015 in hall 25 at booth H18!

    Calculation of the Face Load Factor
    Thursday, 05. March 2015
    In the K calculation, the manufacturing allowances are now considered using the combinations of (+/-) signs of fma and fhb (module ZA35). Furthermore, the gap as well as load distribution are shown for all combinations of (+/-) fma and (+/-) fhb in graphs; they are also listed in the report. In case of planetary gears, the results are determined for each planet singularly.

    Additionally, a new dialog is available which allows the user to define the number of slices for the calculation of load distribution. This allows, among other things, a faster calculation for planetary gears.

    Based on the effective gaping in the tooth mesh, the optimal flank modification is now delivered. The flank line modification is considering the bending and torsion components of the shaft deformation.

    Finally, the sizing of lengthwise crowning and helix angle modification is currently possible under consideration of the axis misalignments. The modification values are therefore calculated using the exact method ISO 6336-1, Annex E.

    For cylindrical gears (module ZPK) under 'Module-specific settings/General', files with tooth shape can now be exported - including coordinate points, normal vectors and curvatures. There is also a new input mode 'Diameter' available for the reference profile and pinion type cutter data, which allows an easy and immediate input of diameter values instead of factors. The information graphics have been optimized in this connection too.

    Finally, for measurements over pins with small pin diameter, the display option for graphs was enhanced and shows now under ‘2D Geometry/Tooth form/Gear 1,2/Normal section (gap)’ clearly the flattened pin and measure circuit diameter.

    A new calculation core was developed for the shaft calculation (module WPK) to favor increased stability, better performance and easier fault correction. This reprogrammed core is now freely available for the KISSsoft user. The older method, meanwhile, is still active ‒ under 'Module-specific Settings/Calculations/use 2013er Solver'. Particularly for calculations of shaft eigenfrequencies (module WA4), the new calculation method is recommended.

    In the graphic presentations, the location of the calculated strength cross sections is displayed in the graphic 'Strength'. A new graphic under 'Shaft/3D Display/Deformation (Bending)' also illustrates the bending lines and shaft forces in 3D.

    In the upcoming KISSsoft Release 03/2015, these highlights of the shaft calculation have been expanded even further: If you want to get to know them and are interested in the beta version, please send us an e-mail and we will send you a trial license back. We look forward to receiving your feedback!

    Part 2 of ISO/TR 15144 just released!
    Thursday, 11. December 2014
    Part 2 of ISO/TR 15144 has just been published and contains four calculation examples for the application of this micropitting standard - for a reliable prediction on the risk of micropitting.

    As part of our effort to ensure quality control, we have recalculated all the examples with KISSsoft (module ZA32) and came to matching results. This recalculation in document form is also available for you.

    We say goodbye to you from the 24th December due to our winter holidays and are back again for you from 5th of January 2015 newly refreshed! At this point, we would like to thank our customers, partners and friends for a successful 2014 and the confidence you have shown in us.

    To a splendid further collaboration and for all of you Happy Holidays!

    Enhanced Thermal Balance in KISSsys
    Friday, 28. November 2014
    KISSsys is a system add-on to KISSsoft, where complete transmissions and drive trains can be modeled (SYS module). The gearbox package GPK calculation, which is based on KISSsys, provides the user with 17 basic models of gearboxes as templates (GPK module).

    With the "Efficiency Template", available for KISSsys, the efficiency calculation and thermal analysis in accordance with ISO/TR 14179 are carried out for all types of transmissions and drive trains. In addition, the template now includes a large number of new functionalities, which meet the requirements of the industry.

    With the integrated programming language in KISSsys, own modifications of the calculation code can be made. Improvements of the gear design and the required cooler power are therefore much more purposefully and easily definable by the user. 

    If you are interested in a trial version or in a detailed manual, just contact us – or visit our booth K09 at the CTI Automotive Transmission Symposium in Berlin from the 8th until 11th of December 2014.

    Extended Bolt Calculation in KISSsoft
    Tuesday, 04. November 2014
    In the bolt calculation according to VDI 2230 (module SPK), among other things, additional strength classes for nuts have been implemented in KISSsoft. New is also the feature that stress can now be calculated either with a reduced torsional stress level or with none at all.

    Furthermore, CADFEM developed together with KISSsoft in ANSYS the tool "WB/Bolt Assessment under VDI2230" for automated evaluation of bolts, so complex component part geometries can be calculated efficiently. The benefit of this tool is the fast and reliable assessment of large housing structures with many bolts. Consequently, the user is freed from tedious, repetitive tasks and can concentrate on the development of optimal and reliable gear boxes.

    Beveloid gears have their own new module in the KISSsoft system (module ZH1). Sizing and dimensioning of beveloid gears have been implemented based on cylindrical gear standards, which also makes it possible to consider load spectra.

    The usual flank modifications, such as helix angle modification or negative crowning, are still available to help optimize tooth contact in a 3D model.

    Finally, tooth contact can be verified using the graphical contact analysis method, and the models can be exported for various purposes, such as FE analysis, 5-axis milling, or output to a measurement grid.

    The expert modules in the KISSsoft/KISSsys system also include seven language modules: English, German, French, Italian, Spanish, Russian and Portuguese (modules LA1 to LA7).
    Unlike when you are working in some other calculation or software programs, you can change the user interface language in the KISSsoft system even when you are right in the middle of the calculation process. In addition, we have built up technically strong representative offices in numerous countries around the globe to guarantee support in the local language (in Mexico, Brazil, the USA, France, Turkey, Russia, People's Republic of China, South Korea, India, etc.).

    The ease with which you can change the user interface language and generate reports and graphics in other languages makes it possible to:
    • outsource engineering or production – calculation files, reports, results and data exports can be created, opened and edited in any language (no additional translation costs).
    • perform benchmarking and integrate components from several companies (as it is typical in the wind turbine manufacturing sector, automobile construction, etc.) across multiple countries and languages.
    KISSsoft, which is multilingual, supports activity on a global scale, can win markets, and enables cooperation with multiple partners. Our team at KISSsoft in Switzerland, which includes people of nine different nationalities, wishes you the very best success with your international contacts.

    KISSsoft Adjusts to Your Needs!
    Tuesday, 05. August 2014
    On multiple requests of our customers, there are now two instructions available for tailoring KISSsoft to individual requirements and CI-regulations:

    Instruction 092 „Modifying Reports“ assists the user to design custom report templates. Thereby unit adjustments and font size, settings in graphics as well as tables belong to the comfortable handling that KISSsoft provides.

    It is now also possible to extend the configuration of the software. So the result display can be customized individually. With the Instruction 093 ”Define Rules”, the user is able to create custom rules for implementing e.g. internal company standards. The user also can be notified of intermediate values or results which are outside of permissible limits.

    Do not hesitate to contact us if you have any questions!

    Further Parts of VDI 2736 Published
    Wednesday, 16. July 2014
    The VDI Guideline 2736 for plastic gears takes form: Part 2 (load capacity calculation of cylindrical gears) and part 3 (load capacity calculation of crossed helical gears) have been published as final white printings, part 1 (materials and manufacturing), and part 4 (evaluation of load capacity characteristics) are available as official draft versions via the publishing house “Beuth”.

    The VDI Guideline 2545, the predecessor of the VDI 2736, has already been implemented in the 80’s in the calculation program of KISSsoft. Nowadays, plastic gears are found in many transmissions, but the VDI guideline 2545 was withdrawn. For this reason, we welcomed it very much to participate in the Guideline VDI 2736.

    We are delighted that KISSsoft could bring own insights from everyday practice into this development process.

    A series of new graphics have been added to the shaft calculation process in KISSsoft. These provide a clear 3D view of shafts and bearings, along with the bearing forces and loads (WB2).

    These graphics can also be animated to illustrate rotation and bending, making even the most complex shaft systems easy to display and to understand.

    Furthermore, the shaft calculation was reprogrammed in its calculation core. This not only improves stability considering calculation convergence, but also makes errors easier to identify and resolve.

    For us, calculation standards are naturally fundamental. Therefore, the KISSsoft company works actively in the standardization committees. Dr. Ulrich Kissling is chairing the TK25 Committee (‘Gears’) of the Swiss Association for Standardization (SNV) and is a voting member for Switzerland of the ISO TC 60 and the Workgroup 15 (‘Micropitting’) as well as the Workgroup 6 (‘Cylindrical gear calculation’). Additional KISSsoft employees are in the ISO TC 60 WG 13 active (‘Bevel gears’), in the VDI Commission for defining the VDI 2736 (‘Plastic gears’) and in the board of the VDI 2610 (‘GDE’). Finally, we host the ISO and VDI meetings regularly in our office. True to our motto "Sharing knowledge", we support the exchange of information on an international level in order to offer our users a globally applicable software.

    The calculation programs of KISSsoft are based on the implementation of all relevant standards and their drafts (ISO, DIN, AGMA, VDI, Klingelnberg).  This allows KISSsoft to be always on the cutting edge of technology and to offer many design and optimization tools, as well as methods which transcend the standards.

    Local Wear Simulation in KISSsoft
    Thursday, 15. May 2014

    A new progressive wear method is used to define the wear for cylindrical gears: This method is based on the contact analysis and uses an iterative process to simulate the actual wear. The result is displayed either in 2D or in 3D, to provide a clear evaluation of the various modifications involved, for example, the effect of tip relief on the wear behavior (module ZA31).

    The wear calculation also includes calculation of the wear factor with nitrided, unhardened, and hardened steels according to Plewe.

    The calculation also includes the effect of some lubricants, as defined in the measurements taken by the company Klüber.

    KISSsys AWARD 2014
    Thursday, 24. April 2014
    Celebrate with us 15 years of KISSsys and enter your application to win the KISSsys AWARD 2014!

    You are free to choose your own topic. We leave it to you – a highly complex kinematic model or a visionary model rich in imagination.
    Or are you more interested in interfaces with other programs such as vibration simulation or FE?

    All that matters is that you design your model using KISSsys, the system add-on to KISSsoft.

    You can obtain a free license for the purposes of the competition (commercial use excluded) via registration form.

    Submit your KISSsys model until August 30, 2014 and convince our jury. We are looking forward to your participation!

    PS: You can also submit existing models.

    During the week of April 7 to 11, several meetings of ISO Workgroups have taken place at KISSsoft AG headquarters.

    Workgroup 6, chaired by Professor Höhn, is intensively engaged in the development of a Technical Report, in which for the first time eight examples of calculations according to ISO 6336 will be documented. This work is very important for KISSsoft, because it can demonstrate that our software correctly implements the ISO 6336 and we get the same results, as they will be published in the standard.

    After concluding the new issue of the ISO 1328-1 for cylindrical gear tolerances, Workgroup 2 works now on the Technical Report 10064: Code of inspection practice. The ISO 1328-1 was published in 2013 and is included in the new KISSsoft Release 03/2014. Since the differences compared to 1995 are considerable, both versions of Part 1 are now available in KISSsoft. We assume that it will take still much time until the new tolerance values are generally considered.

    Workgroup 7, chaired by Dr. Octrue, is concerned with the geometry and strength of worm wheels. The different flank forms of the ISO TR 10828 are implemented in the 3D worm models of KISSsoft.

    We are pleased to have hosted these successful meetings full of inspiration!

    New KISSsoft Release 03/2014
    Monday, 07. April 2014
    On 7th of April, the industrial fair in Hanover opens its doors. At the same time, the new version of KISSsoft 03/2014 will be released with a number of innovations that have been implemented. Including the following highlights:
    • Calculation of beveloid gears with output of 3D models in STEP format
    • Efficiency and thermal rating of drive trains in KISSsys
    • Simulation of flank wear, based on an iterative wear calculation with contact analysis
    • 3D display of shafts as well as bearings with a visual indication of applied loads and reaction forces
    • Enhanced sizing for profile and flank modifications of cylindrical gears
    • And many more ...
    If you would like to learn more about the highlights of our software, visit us at the HANNOVER MESSE in Hall 7 at booth C01 or ask for a free test version.

    PS: Are you already a customer with maintenance contract? Then you will receive the update still in April!

    Customizing of KISSsoft
    Thursday, 13. March 2014
    Simple and intuitive handling is the basis for comfortable and efficient work with a software. In KISSsoft, there are several possibilities available: like personalization of the handling and tailoring it to your own needs and standards.

    For many years it has been possible to design custom report templates. In addition, unit adjustments and font size, settings in graphics as well as tables belong to the convenient customization capabilities that KISSsoft provides.

    In the Release 03/2013, some interesting new possibilities are available which extend the configuration of the software. So, the result display can be customized individually. Furthermore, the user can create custom rules to implement, for example, internal company standards. The user also can be notified of intermediate values or results which are outside of permissible limits.

    For an analytical strength assessement, in the first instance the currently valid standard has to be applied. Therefore, an essential task of KISSsoft is to provide the user with the latest calculation standards. In the Release 03/2013, several standards are affected – amongst others the shaft strength calculation according to DIN 743 (module WA6) and the FKM guideline (module WA7).

    The shaft calculation standard DIN 743:2012 contains now the proof in order to avoid incipient cracks on hard surface layers. Furthermore, calculation with load spectra according to the method "Miner extended" and slight modifications of the technological size influence coefficient K1 are available.

    The 6th Edition of the FKM guideline implies currently some changes considering the material data and the calculation of the support factor number according to the material-mechanical concept.

    Comparisons to the previous edition of the two standards were performed by KISSsoft and are available on request.

    The KISSsoft 03/2014 Beta Version has now been released for a test run. The final release will be available from April 7th, 2014 - just in time for the fair in Hanover "Hannover Messe".

    If you want to find out more about the updates of the new software or if you are interested in a test license, please send an e-mail. We look forward to hearing your feedback!

    Let us share knowledge.

    KISSsys, KISSsoft‘s system add-on, enables you to model complete gear units and drive trains (module SYS).

    The "KISSsys assistants" (for parallel shafts and for single stage planetary gear units) guide the user through the steps involved in modeling a parallel or planetary gear unit.

    Since the Release 2013, in the user interface, the most commonly used elements are now available as icons. To generate a model a user can simply drag and drop icons to add elements directly to the diagram window and link them to each other together.
    Furthermore, the „Gearbox variant generator“ completes KISSsys with an efficient method for automatically creating numerous variants of gearboxes. The evaluation function enables you to make quick comparisons based on space, cost, efficiency and other criteria.

    As we celebrate this year 15 years of KISSsys, we host a competition: The best application will win the KISSsys AWARD 2014!

    Submit a KISSsys model and convince our jury. We are looking forward to your participation!

    Last KISSsoft News in the Year 2013
    Wednesday, 11. December 2013
    If you have some peace and quiet during the holidays, then browse the picture gallery of a Spanish engineer about designing a wooden clock with KISSsoft and its production. Iñigo Latasa wrote to us: "The world is upside down. A Spaniard explains the Swiss, how to build a clock."

    We say goodbye to you from the 20th December due to our winter holidays and are back again for you from 6th of January 2014 newly refreshed! At this point we would like to thank our customers, partners and friends for a successful 2013 and the confidence.

    To a splendid further collaboration and for all of you Happy Holidays!

    Calculation of Cold-Wear
    Monday, 02. December 2013
    Low-speed wear or cold-wear is a phenomenon that occurs with slow rotating and heavily loaded gears. In the process, the EHD lubricant film thickness gets so small that the metallic contact in the meshing leads to wear.

    KISSsoft evaluates the wear according to the calculation of Plewe (module ZPK) and in the contact analysis with local numerical values (module ZA32).

    Furthermore, the influence of the lubricant is considered in KISSsoft. The KISSsoft calculations were compared with the damage course of the test bench and show a very good agreement. This comparison confirms this practical calculation method.

    If you are interested in further information, please contact us at: info@KISSsoft.AG

    Contact Patterns of 5-Axis Milled Gears
    Thursday, 31. October 2013

    The 5-axis milling of gears is an established manufacturing process in the field of short run and replacement parts. This manufacturing method is used for cylindrical gears, and also increasingly for bevel gears and worm wheels. KISSsoft provides the exact 3D models for that purpose (modules ZC10, ZD10 and CB1).

    We recently performed rolling tests of the milled bevel gear and worm gear sets and compared the contact patterns with the predicted results from KISSsoft contact analysis: KISSsoft contact analysis results matched the actual contact pattern.

    We are pleased to give a lecture on this topic at the Dresden Machine Elements Colloquium (DMK 2013) in Germany. Find more information about events and fairs on our website.

    Contact Analysis for Cylindrical Gears
    Wednesday, 09. October 2013
    The contact analysis for cylindrical gears in KISSsoft (module ZA30) has been extended and improved.

    Experience gained from a comparison between various commercial contact analysis programs, carried out in fall 2012, has also left its mark on the calculation.

    For example, additional correction factors (including one for Hertzian flattening) have been implemented, providing the user with even more detailed setting options. Of course, appropriate standard values are also set where suitable.

    For the calculation of worm wheels and crossed helical gears, fine sizing modules are now available (module ZD5 and ZE6).

    The KISSsoft fine sizing is applied to gear optimizations of all kinds - from static strength to noise optimization. Thereby, the macro geometry is varied in desired areas and the optimal solution according to various criteria is selected from the calculated variants. Plastic helical gears can be directly calculated according to the new draft of the VDI 2736.

    After the cylindrical and bevel gears, these fine sizing modules complete the sizing process for all toothings.

    For all cylindrical gears, custom configurable manufacturing drawings are now available in KISSsoft (module ZPK). The toothing data and a range of different graphics − such as flank modifications, etc. − can now be displayed in one graphic, output to screen or paper, and sent to the toothing manufacturer.

    At the same time, graphic position and scale can be set by the user on his own. Now toothing data can be easily arranged and placed on the graphic.
    The settings are saved in a separate file and thereby adopted for all gears. This approach favors also the definition of company standards.

    Have a look at the manufacturing drawing examples in a KISSsoft test license.

    Another highlight in the KISSsoft Release 03/2013 is the extended settings and evaluation options for optimizing modifications of cylindrical and planet gears.

    A new feature is that the face load factor KHβ can now also be calculated. This therefore reveals the direct influence of the tooth trace modification on the safeties of the classic tooth root and flank load capacities.

    Modifications are evaluated in the radar chart, which also provides a very clear comparison, especially within different partial loads.
    The contact analysis has been greatly extended for planetary gear units (module ZA30). It is now possible to take into account the exact deflections of the shafts on the sun, the planet, and the internal gear. The planet carrier position is also determined by a shaft calculation, or can alternatively be specified as a displacement. The results are finally displayed in the 3D system, ensuring maximum clarity. This provides a powerful analysis tool for the planet system.
    New dimensioning suggestions are now calculated for modifications, especially for planetary gear units (module ZA5). This ensures that tooth trace modifications can be specified accurately, on the basis of the planet carrier torsion and sun gear deformation.
    In the KISSsoft Release 03/2013, the current KISSsys assistants were extended and furthermore a planet assistant was added. These assistants facilitate and simplify the modeling considerably.

    The already existing "Parallel Shaft Assistant" can now – along with spur and helical gear
    stages – also create bevel, worm and crossed helical gear stages
    . The modeling process itself is also made more intuitive, the user is guided step by step through the entire gear box structure.

    New: The "Planetary Gear Stage Assistant" is implemented. The user is guided explicitly step by step through the kinematic structure. From the sun to the planet carrier - no element is left out, the modeling process is accomplished directly with coaxial shafts.

    Following the modeling, the rough sizing of the gears can be carried out in KISSsys. This feature is available for cylindrical and bevel, worm and crossed helical gears as well as planetary gear units.

    The recent meeting of the committee for the upcoming guideline VDI 2736 has taken place on our premises.

    The VDI 2736 covers plastic gears and is replacing the withdrawn guideline VDI 2545. Newly added are steel worms paired with plastic gears, for which a safety against root shear stress and the flank pressure are calculated. Considering cylindrical gears now also the wear is determined. Part 2 (load capacity of cylindrical gears) and part 3 (load capacity of worm gears) are already published  as official drafts. Part 1 (materials and manufacturing) and part 4 (conducting and analyzing of material measurements) should be available at the end of this year or early next year.

    We are pleased to have hosted this successful meeting full of impulses!

    The last meeting of the ISO Workgroup 13 on bevel gear calculation took place on the 23rd and 24th of May 2013 at the KISSsoft AG, in Switzerland. The topics were mainly the strength calculation of bevel and hypoid gears according to ISO 10300. In addition, a new Technical Report for sample calculations is in the works, to illustrate the calculation process.

    We thank the ISO Workgroup for the visit and look forward to a further active and successful cooperation within the Workgroup!
    Tuesday, 30. April 2013
    The Huber Verlag für Neue Medien GmbH awards the INDUSTRIEPREIS to companies with high economic, social, technological and environmental benefits true to the slogan "Industry Award 2013 - Push for Smart Industry".

    The company KISSsoft AG was honored for the product KISSsys by a four-member expert jury with the title BEST OF 2013.

    KISSsys has particularly impressed the judges and belongs thus to the top group of over 1200 submitted entries.

    We are delighted to receive this award!
    Today the time has come – the Hanover Fair opens its doors again. Simoultaneously the KISSsoft Release 03/2013 is available, in which a wide range of new features were implemented, including the following highlights:

    •    Optimized contact analysis of cylindrical gear pairs and planetary systems with clearly arranged
    results in 3D
    •    Design of plastic gears according to the draft of the new VDI guideline 2736
    •    Automatic, easily customized, generation of manufacturing drawings – with gearing data, various graphics as flank corrections etc.
    •    Fine sizing of worm wheels and crossed helical gears for variable macro geometries
    •    Updated DIN 743 and FKM Standards in the shaft calculation
    •    KISSsys gearbox assistant for planetary models
    •    And many more...

    If you want to find out more about the highlights of our software, visit us at the Hanover Fair in hall 25, at booth E01/1, or ask for a test license at info@KISSsoft.AG!

    Ps: Are you already a customer with maintenance contract? Then you will receive the update until end of April.
    Det Norske Veritas
    Wednesday, 13. March 2013
    Det Norske Veritas provides with the standard No. 41.2 "Calculation of gear rating for marine transmission" a widespread gear calculation method for marine purposes, such as marine propulsion and important auxiliary onboard ships and mobile offshore units. In KISSsoft, the cylindrical and bevel gear calculation were implemented, according to edition of May 2012 (module ZA19 and ZC11).

    The standard contains not only the safety calculations for root and flank fatigue but also the safety calculation for achieving a required hardening depth. This valuable information is now available in KISSsoft for other calculation methods too.

    Another special feature is the detailed material properties in limited life strength and the possibility to consider peak loads.

    Get your free trial version of KISSsoft and the DNV instruction paper at info@KISSsoft.ag!
    The KISSsoft 03/2013 Beta Version has now been released for a test run. The final release will be available from April 8th, 2013 - just in time for the Hanover Fair.

    If you want to find out more about the updates of the new software or if you are interested in a test license, please send an e-mail to info@KISSsoft.AG. We look forward to hearing your feedback!

    Let us share knowledge.
    KISSsoft is proud to be MSC Software's first Technology Partner with a connection to the new Adams/Machinery product. KISSsoft will be an integral part of a new system-level dynamic simulation module, in which the effect of rolling bearings will be considered.

    The full nonlinear stiffness of rolling bearings will be modeled and used within the Adams/Machinery environment, utilizing KISSsoft's expertise, and will be a guarantee for quality, accuracy of results, and speed of calculation.

    We are pleased to welcome our newest Technology Partner: MSC Software!
    Simplified Modelling in KISSsys
    Wednesday, 19. December 2012
    In the KISSsoft Release 03/2012, several assistants for the model building in KISSsys were implemented (module SYS). They facilitate and simplify the modelling significantly.

    One of the assistants guides the user step by step through the entire process of building a cylindrical gearbox. Furthermore, the KISSsys assistants support in calculating gears and shafts. Further assistants are scheduled for the Release 03/2013.

    Finally, all KISSsys tables have been improved in terms of formatting usability such as font, background and text items, which leads to higher clarity and better user-friendliness.

    At this point, we want to thank all our customers, partners and friends for a successful 2012 and the confidence - we look forward to further cooperation!
    New Profiles for Enveloping Worm Wheel
    Thursday, 25. October 2012
    In the KISSsoft Release 03/2012, the profiles for worms with enveloping worm wheel were enhanced. The 3D models for the profile types N, K and C are also available now (module ZD10).

    The geometry shapes are determined as defined in the Draft of ISO/DTR 10828.2. This technical report contains the definition of several – in the industry commonly applied – profile types A, I, N, K, and C (Cavex).

    Furthermore, with the graphical contact analysis the contact situation can be verified and optimized using tool modifications.

    Have a look at our tutorial 16 about the worm gear calculation or ask us for the specific tutorial for 3D modelling with graphical contact analysis.
    KISSsoft AG: New Address!
    Wednesday, 12. September 2012
    We moved our office to a new address:

    KISSsoft AG
    Rosengartenstrasse 4
    8608 Bubikon

    Tel:  +41 55 254 20 50
    Fax: +41 55 254 20 51

    Please update our contact details - we will keep in touch!

    We are looking forward to continuing successful cooperation
    The load distribution in the axial direction of cylindrical gears can be calculated very efficiently according to the calculation method ISO 6336 Annex E (module ZA35).

    The basis for the load distribution calculation of cylindrical gears is the shaft deformation. While Part 1 of the ISO Norm 6336 does provide only rough classifications for shaft deflection, the Annex E allows to specify the exact value - manually or in KISSsys. The accurate determination of the load distribution forms the basis for an appropriate tooth correction.

    In the advanced training courses of KISSsoft tooth corrections are covered extensively.

    KISSsoft AG - A Gleason Company | Rosengartenstrasse 4 | 8608 CH-Bubikon
    Tel: +41 55 254 20 50 | info@KISSsoft.AG | Data Protection Regulations

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