Influence of flushing on performance of EDM with bunched electrode
Influence of flushing on performance of EDM with bunched electrode
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DOI：
10.1007/s00170-011-3357-8
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发表时间：
2012-01-01
影响因子：
3.4
通讯作者：
Zhao, Wansheng
中科院分区：
文献类型：
--
作者：
Li, Lei;Gu, Lin;Zhao, Wansheng
用于大块材料去除的放电加工（EDM）的现有应用因其相对较低的材料去除率而受到限制。本研究提出的束状电极电火花加工，利用强大的多孔内冲洗功能，是摆脱这一限制的有效途径。本文通过实验和模拟研究了冲洗（冲洗模式和冲洗参数）影响加工性能指标（即材料去除率和刀具磨损率）的机制。根据调查，与传统的单孔内冲洗固体电极相比，多孔内冲洗束状电极可承受更高的峰值电流，并且由于更有效的冲洗过程，因此具有更大的材料去除率和更高的相对刀具磨损率。通过正确选择入口速度和电极有效面积比，可以获得更高的材料去除率，并将相对刀具磨损率保持在较低水平。
The existing applications of electrical discharge machining (EDM) for bulk material removal are restricted by their comparatively low material removal rates. The bunched-electrode EDM proposed in this study, using the powerful multi-hole inner flushing, is an effective way of being released from this restriction. This paper investigates the mechanism by which flushing (flushing modes and flushing parameters) influences machining performance indices, i.e., material removal rate and tool wear rate, using experiments and simulations. Based on an investigation conducted, compared with traditional solid electrode with mono-hole inner flushing, a bunched electrode with multi-hole inner flushing endures higher peak current and results in larger material removal rate and higher relative tool wear ratio because of a more effective flushing process. By properly choosing inlet velocity and electrode effective-area ratio, a higher material removal rate is achieved and relative tool wear ratio is kept at a lower level.