Electrical discharge machining with ultralow discharge energy
Electrical discharge machining with ultralow discharge energy
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DOI：
10.1016/j.precisioneng.2006.01.004
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发表时间：
2006-10-01
影响因子：
3.6
通讯作者：
Miyazaki, Makoto
中科院分区：
文献类型：
--
作者：
Egashira, Kai;Matsugasako, Akihiro;Miyazaki, Makoto
研究了利用超低放电能量进行电火花加工的可能性。使用RC放电电路的电火花加工在低开路电压和大约30pF的电容下进行。对工件进行超声波振动，去除放电间隙中的碎屑和气泡，从而防止短路。在低于15 V的电压下，在0.4 μ m的振动幅值下进行加工，在此条件下，每个脉冲的最大放电能量约为3 nJ。在电压低于40 V时，体积电极磨损率可达0.2%，而使用RC放电电路的电火花加工通常大于1%。在20v或更低电压下加工的工件表面光滑，没有可观察到的放电坑，并且没有电火花加工表面的典型特征。(c) 2006年Elsevier Inc.出版
The possibility of electrical discharge machining (EDM) with ultralow discharge energy has been investigated. EDM using an RC discharge circuit was performed at low open-circuit voltages and a capacitance of approximately 30pF. Workpieces were ultrasonically vibrated to remove debris and bubbles from the discharge gap, thus preventing short-circuiting. The machining proceeded at voltages lower than 15 V at a vibration amplitude of 0.4 mu m. The maximum discharge energy per pulse is as small as approximately 3 nJ under these conditions. The volumetric electrode wear ratio can be 0.2% at voltages lower than 40 V, while it is normally more than 1% for EDM using an RC discharge circuit. Workpiece surfaces processed at voltages of 20 V or lower are smooth and free of observable discharge craters, and show no typical features of surfaces machined by EDM. (c) 2006 Published by Elsevier Inc.