本文通过对龆轮齿根局部有磨不出现象的研究,指出热处理变形不是龆轮齿根局部磨量不足的主要原因,而龆轮磨齿前滚齿的滚刀选用错误或磨齿前滚刀齿形设计不正确才是原因所在,提出龆轮磨齿前滚齿不宜与大齿轮共用相同的磨前齿轮滚刀,必须单独为其量身设计定制沉切量恰好的带触角的磨前齿轮滚刀,在特定的情况下直接选用标准留磨滚刀加工磨齿前滚齿也不失为明智的选择。 In this paper, the phenomenon of partial wear on the tooth root of the pinion is pointed out. It is pointed out that the heat treatment deformation is not the main reason for the lack of partial grinding on the pinion tooth root. However, Knife tooth design is not correct is the reason, proposed gear hobbing before the pinion gear should not share the same gear with the same gear before the hob, must be tailor-made for its tailor-made design exactly the amount of contact with the antenna before grinding Gear Hob, in the particular case of direct use of standard grinding hob hobbing gear hobbing is also a wise choice.