ZHEJIANG HESHUO TECHNOLOGY CO.,LTD , https://www.hosuocn.com Cam drive is a widely used mechanism for achieving mechanical automation. The drum cam is widely used in the automatic machine. It acts as a roller for the active member to contact with it, and realizes the actions of the follower fast forward, work forward and fast reverse. The common drum cam surface is made of the Archimedes spiral surface, which is convenient for processing the spiral groove.