模具类零部件多存在大量圆孔或异形孔,位置精度要求较高,因此常规加工方法为线切割。如果采用一次性线切割工艺加工出所有高精度位置的孔,可以避免定位误差,并明显提高线切割加工的位置精度。在分析孔加工形状误差的基础上提出了一种改进工艺。该工艺同时适用于快走丝和慢走丝。 Mold parts and more there are a large number of round holes or shaped holes, high position accuracy, so the conventional processing methods for wire cutting. If the use of disposable wire cutting process to produce all the high-precision position of the hole, to avoid positioning errors, and significantly improve the wire cutting position accuracy. Based on the analysis of hole machining shape error, an improved process is proposed. The process applies to both fast and slow wire walking.