The Modeling of 3D Feature Solid Unit on Involutes Gear Function Type

This paper use VC++ as an exploitation tool, start from the fully new conception on the theory of 3D solid unit, research deeply the feature modeling of 3D solid unit of involutes gear functional type, and in accordance with involutes equation, analyze the shape feature and extract the common of design parameter about gears included cylindrical spur gear, helical gear, cone gear and elliptic gear, research the relation between design parameter, the solid unit blank feature parameter and process feature parameter. Insert a middle insertion of 3D feature solid unit modeling about involutes functional type gear feature parameter in 3D-CAD software SolidWorks2003 design platform, realized automatic solid unit modeling of gear which has a feature of involutes function, make a substantial base in order to realize intelligent CAD and 3D-CAPP, strengthen 3D-CAD's practical function.