１　前言锥孔通常可在普通车床、仿形车床、数控车床上加工。如果在一个零部件上有不同锥度的孔，用上述万能设备加工，则生产率低，质量不稳定。我厂新研制的镗锥孔工艺装置安装在组合机床上，加工不同锥度的孔，取得了很好的效果。２　结构与原理该结构（图１）是由大镗杆２? 1 Introduction Conical hole can usually be ordinary lathe, copying lathe, CNC lathe processing. If there is a hole with a different taper in one part, machining with the above universal equipment results in poor productivity and unstable quality. I developed a new factory boring cone process equipment installed in the combination of machine tools, processing different taper hole, and achieved good results. 2 structure and principle of the structure (Figure 1) is boring bar 2?