Relation between Debris Concentration and Discharge Gap Width in EDM Process
Relation between Debris Concentration and Discharge Gap Width in EDM Process
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DOI：
10.2526/jseme.41.156
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Haruka Takeuchi;M. Kunieda
中科院分区：
文献类型：
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作者：
Haruka Takeuchi;M. Kunieda
在这项研究中，我们的目的是获得之间的定量关系，在下沉式电火花加工（EDM）的碎片浓度和间隙宽度。为了模拟电火花加工的加工精度，需要确定差距中介质击穿强度最低的放电位置。放电位置是根据以下事实确定的：差距的介电击穿强度随着间隙宽度的减小和悬浮在介电流体中的碎片颗粒的浓度的增加而减小。由此得到了磨屑浓度与间隙宽度的关系。通过仿真得到了圆形工作区径向上的磨屑浓度分布，并通过实验测量了同一方向上的差距宽度分布。因此，通过将碎片浓度与每个径向位置处的差距宽度相关联，获得了该关系。差距宽度与碎片浓度呈指数函数关系，其指数小于1。
In this study, we aim to obtain the quantitative relation between debris concentration and gap width in sinking electrical discharge machining (EDM). To simulate the machining accuracy of sinking EDM, it is necessary to determine the discharge location where the dielectric breakdown strength is lowest in the gap. The discharge location is determined on the basis of the fact that the dielectric breakdown strength of the gap decreases with decreasing gap width and increasing concentration of debris particles suspended in the dielectric fluid. Hence, the relation between debris concentration and gap width was obtained. The distribution of the debris concentration in the radial direction of a circular working area was obtained by simulation, and the gap width distribution in the same direction was measured experimentally. Thus, by correlating the debris concentration with the gap width at each radial position, the relation was obtained. The gap width was expressed as an exponential function of the debris concentration whose index was lower than unity.