The effect of ultrasonic amplitude on the performance of ultrasonic vibration-assisted EDM micro-hole machining

被引：9

作者：

Zhang, Peng ^{[1
]}

Yin, Zhen ^{[1
,2
]}

Dai, Chenwei ^{[1
,2
]}

Cao, Ziyang ^{[1
,2
]}

Miao, Qing ^{[1
,2
]}

Zhang, Kun ^{[1
]}

机构：

[1] Suzhou Univ Sci & Technol, Sch Mech Engn, Suzhou 215009, Peoples R China

[2] Suzhou Univ Sci & Technol, Suzhou Key Lab Precis & Efficient Machining Techn, Suzhou 215009, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2022年 / 122卷 / 3-4期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

EDM; Ultrasonic vibration; Micro-hole; Mathematical model; Numerical simulation; CFD;

D O I：

10.1007/s00170-022-09852-3

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A study on ultrasonic vibration-assisted electrical discharge machining (UVEDM) micro-hole, which mainly includes three key designs, was conducted to improve the machining performance of the electric discharge machining (EDM) micro-holes on TC4 titanium alloy. First, a mathematical model for the velocity of the flow field in the interelectrode gap was established. Consequently, the effect of the presence or absence of ultrasonic vibration on the flow velocity was analyzed. Furthermore, based on COMSOL Multiphysics, the two distributions of the flow field and the debris in the interelectrode gap were simulated, and the influence of ultrasonic amplitude on them was analyzed. Finally, the study of UVEDM micro-hole machining with different ultrasonic amplitudes was conducted. The machining performance of the UVEDM micro-hole was found to increase with the increment of the ultrasonic amplitude and the optimal value of 5.22 mu m, while the performance decreases when the ultrasonic amplitude goes beyond the optimal value. Compared with EDM micro-hole, the MMR is increased by 2.4 times, and the electrode loss and hole taper are reduced by 56% and 24%, respectively.

引用

页码：1513 / 1524

页数：12

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