Research on model data exchange method between different structure CAD systems

A novel data exchange method based on neutral semantic feature conversion was proposed in this paper. A neutral semantic feature converter was used as transfer station, and modeling information of different systems would be transformed into a kind of unified data message format, and feature dependency graph was used to represent feature modeling information. Mapping relations between heterogeneous CAD systems´ commands were implemented using heterogeneous semantic conversion based on this method. System implemented in this paper indicated that synchronous collaborative system of heterogeneous CAD proposed can make users work in a environment of real-time collaborative, and can improve product quality and reduce product design cycle.