Micro-EDM Pulse Energy Distribution Ratio Determination
Micro-EDM Pulse Energy Distribution Ratio Determination
复制标题
微细电火花脉冲能量分布比测定
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
K. Rajurkar
中科院分区：
文献类型：
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作者：
B. Shao;K. Rajurkar
本文提出了一种确定微细电火花加工脉冲能量分配比的方法。脉冲能量分配比是电火花加工过程中的一个关键参数。它决定了脉冲的总能量中有多少被分配到每个电极和电极间间隙中。代替测量电极温度变化（这是非常困难的），本文中的方法使用所产生的凹坑的尺寸来确定脉冲能量分配比。采用半无限体均匀圆盘热源导热模型对电火花加工过程进行了数值模拟。通过对热模型的求解，可以得到等离子体半径和脉冲能量分配比。在0.09 μJ ~ 1.02 μJ的脉冲能量范围内，脉冲能量在阳极和阴极的平均分配率分别为9.4%和3.6%。这些结果与其他报道的EDM文献一致。阳极弧坑体积与脉冲能量呈线性关系。
In this paper, a method for determining pulse energy distribution ratio in micro-EDM is presented. The pulse energy distribution ratio is a critical parameter in the EDM process. It determines how much of the total energy of a pulse has been distributed into each electrode and the inter-electrode gap. Instead of measuring the electrode temperature variation (which is very difficult), the method in this paper uses the dimensions of the generated craters to determine the pulse energy distribution ratio. The semi-infinite body with uniform disk heat source conduction model has been applied to simulate the EDM erosion process. By solving the thermal model, the radius of the plasma and the pulse energy distribution ratio can be got. Experiments with the pulse energy from 0.09 μJ to 1.02 μJ show that, the average pulse energy distribution ratio is 9.4% to the anode and is 3.6% to the cathode, respectively. These results agree with other reported EDM literature. Additionally the relationship of the anode crater volume to pulse energy is found to be linear.