Effects of processing parameters on electrode loss of micro-EDM milling with spiral electrode

被引:11
作者
Xing, Qixuan [1 ,2 ]
Gao, Xiang [1 ,2 ]
Zhang, Qinhe [1 ,2 ]
机构
[1] Shandong Univ, Sch Mech Engn, Key Lab High Efficiency & Clean Mech Mfg, Minist Educ, Jinan 250061, Peoples R China
[2] Shandong Univ, Natl Demonstrat Ctr Expt Mech Engn Educ, Jinan 250061, Peoples R China
基金
中国国家自然科学基金;
关键词
Micro-EDM; Spiral electrode; Fixed length compensation method; Processing parameters; Single-objective optimization; Process model; COMPENSATION; CARBIDE; WEAR;
D O I
10.1007/s00170-022-09598-y
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In order to uplift the machining efficiency and accuracy of micro electrical discharge machining (micro-EDM) milling, this paper studied the prediction and compensation method of electrode loss and established a fixed length compensation model for micro-EDM milling with spiral electrodes. It was verified through experiments that the model can successfully predict the electrode loss of micro-EDM milling with spiral electrodes. On the basis of a single factor experiment, the influence of processing parameters (pulse width, pulse interval, peak current, rotating speed) on the actual relative volume loss ratio (theta(r)) of micro-EDM milling with spiral electrodes was studied. Then, based on the orthogonal experiment, the optimization of the theta(r) of micro-EDM milling with spiral electrodes based on fixed length compensation was studied. Through signal-noise ratio (SNR) analysis, the optimal processing parameter combination of theta(r) was obtained as the pulse width of 4.2 mu s, the pulse interval of 13 mu s, the peak current of 4A, and the rotating speed of 1400r/min. Under this parameter combination, the theta(r) of micro-EDM milling with spiral electrodes based on fixed length compensation could be reduced to 22.23%. Variance analyses were carried out on the outcomes, and a process model of theta(r) based on fixed length compensation was established. Because the predicted results were consistent with the results of the validation test, the reliability of the process model was proved.
引用
收藏
页码:4011 / 4021
页数:11
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