我厂有一批长铜棒(200～600mm)需进行滚花加工。按常规加工方法,先加工中心孔,然后才进行滚花。装夹铜棒时有偏心,加工出的中心孔就偏离了铜棒中心,在滚花过程中,会发生比较大的振动,压出的花纹就深浅不一。后来釆用在尾顶尖上加一顶套的办法,就免去了加工中心孔这道工序,滚花时,也不再发 I plant a long copper rod (200 ~ 600mm) need to knurl processing. According to conventional processing methods, the first processing center hole, and then only knurled. Eccentricity when clamping the copper rod, the processing of the center hole deviated from the center of the copper rod, the knurling process, there will be greater vibration, the pattern of pressure on the different shades. Later preclude the use of the tip of the top plus a set of ways to remove the machining center hole this process, knurling, no longer hair