Weld workpiece model design system based on feature

To realize information share among CAD,CAPP and CAM,A weld workpiece model design system was developed based on feature.Conception and classification of weld workpiece feature were introduced.The design method of weld workpiece based on feature was discussed and a model of weld workpiece was divided into workpiece part and welded joint part.This workpiece model was built by 3D CAD system,design was realised by redevelopment of the CAD based on feature of welded joint.A weld workpiece model design system framework was introduced,and the design was realised and developed based on feature of groove.