MRR Analysis on Technology of Piezoelectric Self-adaptive Micro-EDM
MRR Analysis on Technology of Piezoelectric Self-adaptive Micro-EDM
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压电自适应微细电火花加工技术的MRR分析
DOI：
10.1016/j.proeng.2011.08.1113
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Zhu, Yujie
中科院分区：
文献类型：
--
作者：
Fu, Xiuzhuo;Zhang, Qinhe;Bao, Guanghua;Zhu, Yujie
针对微细电火花加工存在材料去除率低、电极损耗大等缺点，提出了一种基于逆压电效应的压电自适应微细电火花加工方法。微驱动部分采用压电陶瓷作动器。这种新技术的工作机理不同于传统的微细电火花加工。这种新技术由于其特殊的结构，可以实现工作过程中短路的自消除。阐述了新系统的工作原理和工作过程。为定量揭示该新技术的放电机理，采用偏最小二乘（PLS）回归方法建立了单脉冲放电弧坑直径与关键加工参数的经验数学模型。分析了电压、电容、电阻等参数对MRR的影响。经验模型与实验数据吻合较好。
Micro electrical discharge machining (micro-EDM) has some shortcomings such as poor material removal rate and high electrode wear ratio etc. In order to overcome these demerits, a new piezoelectric self-adaptive micro-EDM, based on inverse piezoelectric effect, was developed in this paper. Piezoelectric actuator is used as the micro driving part. The working mechanism of this new technology is different from traditional micro-EDM. This new technology can realize self-elimination of short circuits in the working process because of its special structure. Working mechanism and process of the new system were illustrated. An empirical mathematical model on single-pulse discharge crater diameter against the key machining parameters was developed through partial least squares (PLS) regression to quantitatively disclose the discharge mechanism of this new technology. The effects of parameters such as voltage, capacitance, and resistance on MRR were analyzed. The empirical model represents good fits with the experimental data.
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