我厂接受一批外商铸铁端盖生产任务。其内、外径是非加工面,图纸要求以内孔中心定位钻其平面孔(有公差要求),如果采用划线钻孔,效率非常低而且难以达到图纸要求。为了解决这一难题;采用凸轮原理,设计了一套 I plant to accept a number of foreign cast iron end caps production tasks. The inner and outer diameters are non-machined surfaces. The drawings require that the plane holes be drilled and positioned with the center of the inner hole (with tolerance requirements). If the scribing holes are drilled, the efficiency is very low and it is difficult to meet the requirements of the drawings. In order to solve this problem; using cam principle, designed a set