Approach to Detect and Control Gap-Width with Peak Current in Pulse ECM
Approach to Detect and Control Gap-Width with Peak Current in Pulse ECM
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DOI：
10.4028/www.scientific.net/amr.482-484.1973
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发表时间：
2012-02
期刊：
影响因子：
--
通讯作者：
W. Natsu;A. Terada
中科院分区：
文献类型：
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作者：
W. Natsu;A. Terada
为了使脉冲电解加工中工具电极的进给速度与被加工材料的溶解速度保持一致，提出了一种根据电流波形与间隙宽度的关系来检测和控制间隙宽度的方法。首先，通过实验研究了电流波形与间隙宽度的关系。结果表明，电流波形的瞬时超调量与间隙宽度之间存在一定的相关性。在此基础上，开发了一套加工间隙宽度检测与控制系统。该系统由检测电流波形变化的电路和处理来自该电路的检测信号的算法组成。实验结果验证了该间隙宽度检测与控制方法的有效性。
In this study, in order to keep the feed rate of the tool electrode the same as the dissolution rate of the workpiece material in the pulse ECM, a method was proposed to detect and control the gap-width according to the relationship between the current waveform and the gap-width. First, the relationship between the current waveform and the gap-width was investigated experimentally. It was found that there is a correlation in the transient overshoot of the current waveform and the gap-width. Based on this correlation, a system used to detect and control the gap width during machining was developed. This system is composed of the circuit that detects the change in the current waveform and the algorithm that processes the detected signals from the circuit. The effectiveness of the gap-width detecting and controlling method was verified by experimental results.