微孔行星电火花加工

K. Egashira, Tomoya Taniguchi, Satoshi Hanajima, H. Tsuchiya, M. Miyazaki
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引用次数: 16

摘要

以行星运动的方式移动电极对钻微孔特别有用,因为薄电极很难冲洗。然而,这方面的研究报道很少。因此,本研究尝试了直径小于50μm的微孔的行星放电加工(EDM)。钨电极钻铜的实验结果表明,钨电极的行星运动提高了材料的去除率和体积磨损比,减少了过切,有利于钻深孔。在所使用的实验条件下,当行星运动直径约为电极直径的25%时,材料去除率最高。体积磨损比可以降低到1%以下,这对于使用RC电路的电火花加工来说是非常小的。也可以实现小于1μm的小过切,从而实现高精度加工。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Planetary EDM of Micro Holes
Moving an electrode in planetary motion is useful particularly for drilling micro holes because flushing is difficult for a thin electrode. However, there have been few reports on such research. In the present study, therefore, the planetary electrical discharge machining (EDM) of micro holes of less than 50μm in diameter has been attempted. The results of drilling copper using tungsten electrodes show that the planetary motion of the electrode improves the material removal rate and the volumetric wear ratio, reduces the overcut and enables the drilling of deep holes. Under the experimental conditions used, the material removal rate is highest with a planetary-motion diameter of approximately 25% the electrode diameter. The volumetric wear ratio can be reduced to less than 1%, which is very small for EDM using an RC circuit. A small overcut of less than 1μm is also possible, enabling high-accuracy machining.
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