Abstract: Based on the view point of CAD/CAPP/CAM product information integration and the method of azimcethal characteristic dilinearation,this paper focus on the study and application on the information model foundation of non gyrorotor components,especially of the box comeponents.It results in the orientation of a standard.DXF graphic file,which can be used by other CAD/CAM softwares.This paper also shows geometry,topology,feature,dimension and tolerance models of products in data exchange STEP standard.