ＴＢ４２单轴自动车床的变速是通过主轴变速箱在加工过程中自动完成的。主轴变速箱由多片式电磁离合器接通。生产中，因主轴变速频繁，产生热量多。若按机床油窗加油，则变速易发热，摩擦片烧坏现象时有发生。尤其是夏季，变速箱烫手，有时摩擦片一天需更换三次。即使是冬天， TB42 single-axis automatic lathe speed through the spindle gearbox in the process of automatic completion. Spindle gearbox by the multi-chip electromagnetic clutch connected. Production, due to frequent spindle speed, generate more heat. If you press the oil on the machine window, the speed is easy to heat, the phenomenon of friction plate burned have occurred. Especially in summer, the gearbox is hot, and sometimes the friction plate needs to be replaced three times a day. Even in winter,