High aspect ratio micro-hole drilling aided with ultrasonic vibration and planetary movement of electrode by micro-EDM
High aspect ratio micro-hole drilling aided with ultrasonic vibration and planetary movement of electrode by micro-EDM
复制标题
微电火花超声振动和电极行星运动辅助高深宽比微孔钻削
DOI：
10.1016/j.cirp.2009.03.111
复制
发表时间：
2009-01-01
影响因子：
4.1
通讯作者：
Guo, D.
中科院分区：
文献类型：
--
作者：
Yu, Z. Y.;Zhang, Y.;Guo, D.
电火花加工深孔时，由于放电间隙狭窄，产生的粘滞阻力使加工区域内的碎屑和气泡难以清除，导致异常放电现象频繁发生，电极磨损严重。提出了一种利用超声振动强化电极的行星运动，为磨屑和气泡提供一个不均匀的间隙，使其易于逸出放电区，实现高深宽比微细孔电火花加工的新方法。已钻取纵横比为29的微孔。(C)2009年CIRP。
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.