In order to obtain more excellent kinematical and dynamic characteristic

the design of spatial cam contour surface requires higher precision compared with normal products. Therefore

the methods of design and analyzing contour surface by analytical function after spatial cam model designed are discussed based on CAD/CAM system

and moreover

the methods of NC processing of spatial cam based on CAD/CAM system are also introduced emphatically. The key question in CAD and NC machining technology of spatial cam is how to translate the motion law of the follower into contour camber.

the 3D design and NC machining of cylindrical cam was achieved by using Pro/E software.