我厂的矩形半圆冲头(见图1)原来是在工具磨床上加工的,再由钳工配研而成,曾几经周折而未达到设计要求。经过反复的思考和推敲,打破常规、利用万能分度头在平面磨床上加工矩形半圆冲头,一次试磨成功,达到令人满意的效果,具体操作如下: I plant rectangular semicircular punch (see Figure 1) was originally processed in the tool grinder, and then by the fitter with research, has been after many setbacks did not meet the design requirements. After repeated thinking and scrutiny to break the routine, the use of universal indexing head in the surface grinder rectangular semi-circular punch, a successful trial of grinding to achieve satisfactory results, the specific operation is as follows: