A cam mechanism is a rotating or sliding piece in a mechanical #linkage used especially in transforming rotary motion into linear motion or vice versa. It is often a part of a rotating wheel (e.g. an eccentric wheel) or shaft (e.g. a cylinder with an irregular shape) that strikes a lever at one or more points on its circular path
A cam #mechanism has three parts: cam, slide and follower. The cam #shaft rotates continually, turning the cam. The follower is a rod that rests on the edge of the turning cam