Research on manufacturing feature reconstruction technology of heterogeneous 3D CAD model

Aiming at the heterogeneous CAD/CAPP/CAM integration,presented a process of manufacturing feature reconstruction of heterogeneous 3D CAD model:first,it defined a manufacture-oriented classification of basic shape feature so the design feature library and manufacturing feature library can be established;second,it extracted the feature of heterogeneous 3D CAD model by use of recognition technology based on STEP and presented a feature recognition method based on polymorphic coupling of parameterized 2D elements to improve the code reusability of the feature recognition system;at last,it established the manufacturing feature library by use of group technology and reconstructed the manufacturing feature by use of feature mapping.