FVA e.V., the German Research Institute for Drive Technology, is committed to the goal of developing an industry-wide standard for the simple data exchange in gear unit development. The interface is being developed in close cooperation with industry and research under the name REXS (Reusable Engineering EXchange Standard).
REXS defines an industry-wide uniform modeling and nomenclature for the gear unit and its components based on the detailed terminology of 25 of FVA's project committees. With many years of experience and close ties to industry and research, FVA is in a unique position to develop an industry-wide standard.
REXS offers a format for the exchange of gear data along the entire CAE tool chain in gear unit developement.
In REXS, the components of a gear unit are defined based on common parameters. The REXS specification includes everything necessary to define a gear unit model. In essence this includes the machine elements, their attributes, and the relations which are used to define the relationships between machine elements.
The following example models in the REXS format were kindly provided by SEW and FVA GmbH.
FVA: Planetary stage - Minus gearing
FVA: Planetary stage - Ravigneaux set
The REXS standard is published under Creative Commons License CC-BY-SA 4.0 International
You are free to:
copy and redistribute the material in any medium or format
remix, transform, and build upon the material for any purpose, even commercially.
The only conditions are that the original author is named and that the modified specification is circulated under the same conditions.
The author is FVA GmbH.
The REXS interface is being developed in close cooperation with industry and research. The dedication of FVA members SEW-Eurodrive and Schaeffler and their many years of experience with gear unit software will ensure that the developed concept is applicable for the industrial environment.
"REXS is a real step toward new business models based on digital services, and can be used as a standardized data container for digital twins."
Stephan Evert, Head of Bearing Analysis Tools Development in the R&D Bearing division of Schaeffler Technologies AG & Co KG
"An important milestone for Industry 4.0 is the establishment and propagation of standards. The REXS format has the potential to achieve this goal."
Hartmut Rauen, Managing Director of FVA