Abstract
AbstractOver the last two decades, the mechanical CAD industry has witnessed the development of many powerful 3D CAD software products built upon proprietary geometric kernals. The ISO 10303 STEP standard was developed, with the Application Protocol (AP 203) in particular, to provide a medium for product data exchange of lower-level geometry of mechanical parts and assemblies. A recent version, AP203 Edition 2, introduced the exchange of product data using a hybrid model containing construction history, GD&T, parameters and other high-level content. This paper presents an interpretation of the schema definitions provided under the current standard, presents a generic approach to map feature history data between CAD systems, discusses an implementation of this approach for data translation, and discusses the issues in the standard realized during this effort.
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