我厂工模具车间有很多模具,如冲模、钻模等需要镗孔,而且精度要求较高。过去是靠老师傅用启动刀头来达到要求,但质量不够稳定,生产率也不高。后来在大搞技术革命、技术革新运动中,车间老师傅开动脑 I plant a large number of die shop mold, die, die and other needs boring, and high precision. In the past, the chef used his head to meet the requirements, but the quality was not stable enough and the productivity was not high. Later in the major technological revolution, technological innovation movement, the workshop master cheer