我们工厂将加工一批三万余件的六方铜螺母(图1)。若采用普通车刀加工,不但进退刀次数多,辅助时间长,而且相对尺寸不易保证。为了优质高效按时地完成加工任务,我们采用六把车刀组成的组合车刀,在C 620、C 616车床上完成内外圆、端面、切断等工序的加工、效果很好。 Our factory will process a batch of more than 30,000 pieces of hexagonal copper nuts (Figure 1). If the use of ordinary turning tool processing, not only the number of advance and retreat knife, auxiliary a long time, and the relative size is not easy to guarantee. In order to complete the machining tasks on time and with high quality, we use a combination of six turning tools to finish the machining of the inner and outer circles, the end face and the cutting on the C 620 and C 616 lathe, and the effect is very good.