Reverse simulation of sinking EDM applicable to large curvatures
Reverse simulation of sinking EDM applicable to large curvatures
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DOI：
10.1016/j.precisioneng.2011.10.003
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发表时间：
2012-04-01
影响因子：
3.6
通讯作者：
Natsu, Wataru
中科院分区：
文献类型：
--
作者：
Kunieda, Masanori;Kaneko, Yuki;Natsu, Wataru
本文介绍了一种基于电火花加工（EDM）的反向仿真方法的发展，该方法可以获得刀具电极形状，从而在考虑刀具电极磨损的情况下精确加工出所需的工件形状。在开发的反向仿真方法中，使用与目标工件形状相同的初始形状的工件加工工具电极，并应用为正演仿真开发的放电位置搜索算法。在反向模拟中，对从实验中获得的每脉冲刀具电极和工件的去除量进行了切换。为了补偿由于曲率引起的误差，将工具电极和工件的去除体积分别除以并乘以面向工具电极单位面积的工件面积的比率。实验结果表明，通过反仿真得到的刀具电极实际加工后的工件形状比通过等距偏移得到的刀具电极形状更接近目标工件形状。(C) 2011爱思唯尔公司版权所有。
This paper describes the development of a reverse simulation method for sinking electrical discharge machining (EDM) which can obtain tool electrode shapes with which desired workpiece shapes can be machined precisely taking into consideration tool electrode wear. In the reverse simulation method developed, the tool electrode is machined using a workpiece with the same initial shape as the target workpiece shape, applying the discharge location search algorithm developed for forward simulation. The data on the removal volumes of the tool electrode and workpiece per pulse, obtained from experiments, was switched in reverse simulation. To compensate for error due to curvature, the removal volumes of the tool electrode and workpiece were divided and multiplied by the ratio of the workpiece area facing a unit area of the tool electrode, respectively. Experimental results showed that the workpiece shape after actual inachining using the tool electrode obtained from reverse simulation was closer to the target workpiece shape than when the tool electrode shape was obtained by offsetting the target workpiece shape at a distance equal to the gap width. (C) 2011 Elsevier Inc. All rights reserved.