First use five wide ones to rough, and then use three wide ones to finish turning, all with round knives.

Select arc shoulder groove cutter, analyze the turning quality of inner groove and arc shoulder groove, and have the skill of arc shoulder groove, so as to do a good job of fine tearing of arc groove.

The machining process of fine cutting parameters is a process of quickly removing redundant materials from the blank according to the drawing size requirements of parts on the premise of quality and quantity.