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在模具制造行业中,高频电火花加工的特异型腔,是其他机床难以办到的,然而如何进一步挖掘利用电火花加工的优势,我们小组在这方面做了一些探讨,特别是打盲孔盲槽、我们得到一些体会和认识,现举其一例。我厂赶制一批新产品模具,其中一个零件(如图)初起我们感到比较辣手,整个型腔尺寸要求较严、特别是根部宽1.4±0.03、深5.5、长22的中槽,一时把我们难住了,按一般正常加工、电极装主轴头,工件装油杯,这样考虑很不好下手,因为槽窄,放电集中,薄片电极损耗大,因为槽深,无法排屑、短路频繁,加工无法进行。若在1.4宽
In the mold manufacturing industry, the special cavity of high-frequency EDM is difficult to be achieved by other machine tools. However, how to further tap the advantages of using EDM, our group made some discussions in this respect, in particular, blind holes Blind slot, we get some experience and understanding, give an example of it. I plant a number of new products to create a mold, one of the parts (Figure) we feel more spicy beginning, the entire cavity size requirements more stringent, especially the root width of 1.4 ± 0.03, 5.5 deep, 22 long slot, for a time To our hard to live, according to the normal normal processing, the electrode installed spindle head, the workpiece oil cup, so consider very bad start, because the narrow slot, discharge focus, sheet electrode loss, because the groove depth, can not chip, short circuit frequently , Processing can not be carried out. If the width of 1.4