在加工M6×1内螺纹时采用标准丝锥,由于螺纹直径小,材料加工性能较差,再加之标准丝锥在使用时,铁屑易堵塞,使之扭矩增大,润滑性差,最终造成丝锥折断。据统计加工零件20件,采用标准丝锥就折断了3枝。按这样的刀具损失率计算,就会给工厂带来很大损失。针对采用标准丝锥对加工以上零件所存在的问 In the processing of M6 × 1 internal thread standard tap, the thread diameter is small, the material processing performance is poor, coupled with the standard tap in use, easily blocked iron filings, so that the torque increases, poor lubrication, resulting in broken taps. According to the statistical processing of parts 20, the use of standard tap on the broken three. According to this tool loss rate calculation, it will bring great loss to the factory. For the use of standard tap on the processing of the above parts of the question