一、以前的情况 钻头铣尾工序原来的操作方法是这样的:刀垫(见附图)直径(D)是没有规定的,或大或小。因此在加工时,尾部铣的长短只靠肉眼观察,合格与否是单凭自已的经验来判断的,这样也就无法保证产品质量,经常产生尾部铣的长短不一致。造成大批退修品和废品。据统计退修品最多? First, the previous situation drill bit tailing procedure The original method of operation is this: The pad (see photo) Diameter (D) is not specified, large or small. Therefore, in the processing, the length of the tail milling only by the naked eye, the eligibility is judged by their own experience alone, so it can not guarantee the quality of the product, the tail length often produces inconsistent length. Caused a large number of retreat products and waste products. According to statistics, most retreat goods?