In each case, as the CAM is rotated or turned, another part in contact with the CAM, called a follower, is moved either left and right, up and down, or in and out.

The thesis focus on two basic problems: case representation and matching algorithm, which aim at the flexible of knowledge base, integration of CAD/CAPP/CAM and practicability of system.

Therefore, the forces between cam and follower are highly concentrated rather than being distributed over an area, such as would be the case in a revolute or slider joint in a linkage.