An automatic CAPP system for rotational parts

This paper describes a turning process planning of rotational parts. It also reports general aspects to develop an automatic planning system, from the part geometrical identification to the NC program generation. The minimum number of grippings (based on the part shape), the blank type, the boring operations and the geometrical tolerance presence are established in order to determine the machining operations. The proposed method used to recognize the part geometry is based on a combination between an automatic identification of 2D profiles and a feature-based method. By this way, the developed CAPP system could use geometrical information given by any CAD system.