由于我厂铣床使用率特别高,进给箱中牙嵌式离合器的牙嵌易于磨损,牙嵌α角增大受轴向推力影响,接通工进时,牙嵌往外推,快速脱不开。致使牙嵌离合器经常打牙与快速跟车。又由于原设计牙嵌是用18CrNiA渗碳淬火制造,一般厂没有这种料,我们用40Cr淬火,寿命更短,甚至二、三个月坏一 Due to the high utilization rate of milling machine in our factory, the jaws of the jaw clutch in the feed box are easy to wear. The angle α of the jaw increases due to the axial thrust force. . As a result, claw clutches often hit the teeth and quickly followed the car. And because the original design is embedded with 18CrNiA carburizing quenching, the general plant without this material, we use 40Cr quenching, shorter life expectancy, and even two or three months a bad