MACHINING METHOD OF ROLLER GEAR CAM USING 5-AXIS CNC MACHINE

摘要

The present invention relates to a method for processing a roller gear cam using a five-axis computer numerical control (CNC) machine, and more specifically, to a method for processing a roller gear cam using a five-axis CNC machine comprising: an angle diagram definition step; a rough cutting step; and a fine cutting step. In the angle diagram definition step, data is extracted to form an angle between slanted surfaces on both sides of a thread (24) of a drum cam (20) to be bigger than the angle between rollers (12) of a follower (10). Moreover, in the fine cutting step, data is extracted to allow the width of a groove (22) of the drum cam (20) to be increased in a curved section of the groove (22) of the drum cam (20), compared with a linear section. Accordingly, controlling the inter-axial distance between the follower and the cam to reduce the backlash formed between the rollers of the follower and the cam is unnecessary such that the roller cam gear can be easily installed. Furthermore, the position of the follower can be stably maintained in the linear section of the groove of the cam, and stress concentrated on one of the rollers of the follower or a clearance generated on other roller can be prevented.