我們在用比留科夫高速挑扣刀加工螺距为2公厘的螺紋时,发現刀尖容易燒坏,刀具寿命較短。我們經过長期研究,將这挑扣刀作了一些改进,效果很好,可以提高刀具寿命。一、挑扣刀的几何形狀 When we used the Bilukov high-speed pick-off knife to process the thread with a pitch of 2 mm, we found that the tip was easily burned and the tool life was short. After a long period of research, we made some improvements to this pick-and-buckle knife, which worked well to improve the tool life. First, pick buckle knife geometry