Free exchange format for gearbox data - REXS 1.3 Published

Together with leading companies from the industry, FVA (Forschungsvereinigung Antriebstechnik e.V.) has developed REXS, a free format for exchanging gearbox data between different CAE tools. REXS (Reusable Engineering EXchange Standard) minimizes maintenance and data transfer errors for communicating between different tools. The latest version of the manufacturer-neutral interface is now available.

“REXS makes it possible to take advantage of the strengths of different calculation tools. With the new features in the current release, and the possibility of referencing other interface formats, a multitude of new application possibilities in design and manufacturing arise.“
Dr. Moritz Keuthen, Head of Modeling and Simulation at FVA GmbH

REXS Version 1.3 offers a number of enhancements for various gearbox machine elements. A total of 19 feature and change requests from industrial companies and CAE tool developers have been implemented.

What’s new in version 1.3:
  • In the new version, shaft geometry and load capacity parameters have been extended to include description of notches according to DIN 743.
  • The contact behavior between the rolling elements and the raceway or rib of rolling bearings can now be represented in detail.
  • Modeling of the relationship between flank, tool, and manufacturing data has been extended and standardized for all gear types. In particular, machine settings for bevel gears can now be directly described in REXS models.
  • In addition to detailed description of cylindrical and bevel gear geometry in REXS, it is now possible to reference other interface files. The Gear Data Exchange format (GDE) is an established format for the manufacturing and measurement of cylindrical gears (see VDI/VDE 2610). With REXS 1.3, the description of cylindrical gears in REXS models can be supplemented by specifying an associated GDE file. It is also possible to reference Klingelnberg neutral data to supplement the description of bevel gears in REXS.

“The REXS interface has been significantly improved with regard to both content and usability since it was first published in 2017. The way it continues to be embraced by the industry shows that we are on the right track. The latest version has benefitted from a wide range of input from industry, research, and software companies.“
Stephan Evert, Head of R&D Analysis Tools and Methods Development at Schaeffler and Head of the FVA REXS Project Committee

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