Animations of mechanical models

Original model

Positive motion cam

The shape of the cam, rotated by the handle in the reverse, is made to satisfy the length of the straight line, which passes a rotating center of the cam, is constant. Therefore, the position of the green pins are set next to the horizontal plate, to be on the same horizontal line with the rotating center of the cam. The shape of the cam and the rotation degree of the cam decide the position of the plate. This is called, positive motion cam. [Animation: DI JING, M2, Graduate school of informatics, Mar. 2001]