Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10673252 | CIRP Annals - Manufacturing Technology | 2009 | 4 Pages |
Abstract
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.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Industrial and Manufacturing Engineering
Authors
Z.Y. Yu, Y. Zhang, J. Li, J. Luan, F. Zhao, D. Guo,