End mill processing device, CAM device, NC program, and processing method

摘要

PROBLEM TO BE SOLVED: To provide an end mill machining device, a CAM device, an NC program, and a machining method for suppressing regenerative self-excited vibration and mode coupling self-excited vibration. An end mill processing apparatus includes an end mill and a control unit that controls the end mill. The ratio of the protruding length of the end mill 10 to the diameter of the end mill 10 is 5 or more and 50 or less. The end mill 10 has unequal pitch leads or unequal leads. The control unit 150 controls the end mill 10 so that the contact angle between the end mill 10 and the workpiece M1 at the time of machining is equal to or smaller than the critical contact angle θ _lim . [Selection] Figure 5