大量生产中,精挤齿是极有希望取代剃齿的轮齿精加工方法。它不仅生产效率高(机加工时间7秒左右),工艺稳定性好,设备和挤轮制造比较简单,挤轮寿命长(正确使用可挤10万个齿轮);而且,经过挤齿加工的齿轮齿面粗糙度低,有冷作硬化层,齿向呈中凸趋势,这对提高齿轮的使用效益十分有利。因此,这种轮齿加工方法得到先进工业国家的高 In mass production, the fine tooth is very hopeful to replace the tooth shaving finishing method. It not only has the advantages of high production efficiency (machining time of about 7 seconds), good process stability, simple equipment and crowded wheel manufacturing, long service life of crowded wheels (the correct use can squeeze 100,000 gears); moreover, Tooth surface roughness is low, there are cold hardening layer, the tooth was convex trend, which is to improve the efficiency of the use of gear is very beneficial. Therefore, this kind of gear processing method has been advanced in advanced industrial countries