A new method for monitoring micro-electric discharge machining processes
A new method for monitoring micro-electric discharge machining processes
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DOI：
10.1016/j.ijmachtools.2007.08.023
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发表时间：
2008-03-01
影响因子：
14
通讯作者：
Mitsui, Kimiyuki
中科院分区：
文献类型：
--
作者：
Mahardika, Muslim;Mitsui, Kimiyuki
微电火花加工是一种非常复杂的材料去除现象，它受附着、短路和空化等诸多复杂因素的影响。本文提出了一种通过计数放电脉冲来监测mu-EDM过程的新方法，并对计算放电脉冲总能量的预测方法进行了基础研究。在不同的加工类型（形头和平头）和加工条件（芯棒旋转和刀电极振动）下，采用预测方法监测的结果表明，放电脉冲数和放电脉冲总能量对电火花加工材料去除和刀电极磨损特性具有较好的一致性。当施加工具电极振动时，加工时间缩短，因为它消除了附着。可以监测工具电极振动去除黏附的效果，效果良好。由于每种加工类型和加工条件下的刀具电极磨损量不同，为了实现高精度，成功地计算了刀具磨损补偿因子。因此，对mu-EDM工艺有了更深入的了解。(c) 2007 Elsevier Ltd.版权所有。
Micro-electric discharge machining (mu-EDM) is a very complex phenomenon in terms of its material removal characteristics since it is affected by many complications such as adhesion, short-circuiting and cavitations. This paper presents a new method for monitoring mu-EDM processes by counting discharge pulses and it presents a fundamental study of a prognosis approach for calculating the total energy of discharge pulses. For different machining types (shape-up and flat-head) and machining conditions (mandrel rotation and tool electrode vibration), the results obtained using this new monitoring method with the prognosis approach show good agreement between the discharge pulses number and the total energy of discharge pulses to the material removal and tool electrode wear characteristic in mu-EDM processes. On applying tool electrode vibration, the machining time becomes shorter, because it removes adhesion. The effect of tool electrode vibration in order to remove adhesion can be monitored with good results. In order to achieve high accuracy, the tool wear compensation factor has been successfully calculated, since the amount of tool electrode wear is different in each machining type and condition. Consequently, a deeper understanding of the mu-EDM process has been achieved. (c) 2007 Elsevier Ltd. All rights reserved.