我们在机械加工中经常遇到一些英制螺纹,诸如螺距为15.63mm、16.93mm的螺纹,在普通车床C620-1B的走刀箱铭牌上就没有标注出来(见附表)。如何加工?下面就我们的实践谈点经验。根据机床的传动原理及利用走刀箱传动公比倍数和螺距扩大机构,我们只是交换了走刀箱的一个手柄位置,就顺利地把15.63mm螺距的螺纹车出来。 1.公英制换算由于机床走刀箱铭牌上的英制螺纹是按每英寸牙 We often encounter in the machining of some British thread, such as the pitch of 15.63mm, 16.93mm thread, in the conventional lathe C620-1B the nameplate is not marked (see the attached table). How to process? The following talk about our experience. According to the transmission principle of the machine tool and the use of the drive box multiplier multiples and pitch extension mechanism, we just exchanged a handle handle position, we successfully put the pitch screw 15.63mm out. 1 metric conversion Because the British imperial thread on the nameplate of the machine tool box is per inch of teeth