A new algorithm based on the line correspondence for estimating motion parameter is proposed, which can be used to estimate the objects revolving parameters in addition to the objects translating parameters.

This paper discusses the calculation formula of outline for disc cam about roller follower of linear motion along the axis,it analyses the maximum angle of pressure and position for disc cam,from several ordinary motions of follower constant speed motion,constant acceleration and constant deceleration motion,simple harmonic motion and pendulum motion.