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提高目前电火花线切割加工的工艺指标,是发展扩大线切割在各行业普遍应用的重要课题。以下就自己长期工作谈些体会,供参考。一、工件局部尺寸小于二倍钼丝直径对于工件局部小于二倍钼丝或小R的加工,可能有些单位碰不到或很少碰到。而且要求也各不一样,但在某些工件上确是精度所在之处,不可忽视。以往我碰到过这样的情况,当加工钼丝经过小半径圆时,会产生如图1虚线所示现象。如果加工多个齿形工件时还会出现齿形向某一方向倾斜的现象,影响了工件的精度。分析问题的产生主要原因是钼丝的滞后现象和钼丝放电表面大小及
Improve the current WEDM process indicators, is to expand the development of wire cutting widely used in various industries an important issue. The following long-term work on their own experience, for reference. First, the local size of the workpiece is less than twice the molybdenum wire diameter For the workpiece is less than two times the molybdenum wire or small R processing, some units may touch or rarely encountered. And the requirements are also different, but in some of the work is indeed where the accuracy, can not be ignored. In the past I have encountered such a situation, when the processing of molybdenum wire after a small radius of the circle, will produce the phenomenon shown in Figure 1 dotted line. If the processing of multiple tooth-shaped workpiece will appear when the tooth profile to a certain direction of tilt, affecting the accuracy of the workpiece. Analysis of the main causes of the problem is the lagging molybdenum wire and molybdenum wire discharge surface size and