The invention relates to a digit-control rotation cam of horizontal thin point mesh arc cam, wherein it comprises a base 6, and a rotation axle with bearing; the rotation axle via the bearing is arranged on the base; the base also has a rotation disc connected to the rotation axle; the outer side of rotation disc has a taper roller meshed with the arc cam inside the base. The invention uses controllable mesh contact; when the profile of taper roller and the profile of arc cam rotate, the adaptive ability of device on the position error and shape error can be improved; the invention has long service life, high positioning accuracy and simple process. |