High aspect ratio micro-hole drilling aided with ultrasonic vibration and planetary movement of electrode by micro-EDM

被引：126
|
作者：
Yu, Z. Y. [1 ]
Zhang, Y. [1 ]
Li, J. [1 ]
Luan, J. [1 ]
Zhao, F. [1 ]
Guo, D. [1 ]
机构：
[1] Dalian Univ Technol, Sch Mech Engn, Dalian 116024, Liaoning, Peoples R China
来源：
CIRP ANNALS-MANUFACTURING TECHNOLOGY | 2009年 / 58卷 / 01期
基金：
美国国家科学基金会;
关键词：
Micromachining; EDM; High aspect ratio micro-hole;
D O I：
10.1016/j.cirp.2009.03.111
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
When a micro-hole is drilled deeply by EDM, the viscous resistance in the narrow discharge gap causes difficulty in the removal of debris and bubbles from the working area, leading to frequent occurrences of abnormal discharges and resulting in extensive electrode wear. This paper presents a new method of drilling high aspect ratio micro-holes by EDM, in which the planetary movement of an electrode, with enhancement from ultrasonic vibration, provides an unevenly distributed gap for the debris and bubbles to escape from the discharge zone easily. Micro-holes with aspect ratio of 29 have been drilled. (C) 2009 CIRP.
引用
收藏
页码：213 / 216
页数：4
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