Article ID Journal Published Year Pages File Type
805300 Precision Engineering 2010 8 Pages PDF
Abstract

This paper describes a novel method to reduce tool electrode wear in electrical discharge machining (EDM) by applying the relative sliding motion between electrodes. Experimentally, it was found that the cathode spot is more likely to slide on the electrode surface than the anode spot. Heat conduction analysis showed that material removal increases once with the moving speed of the heat source when the moving speed is low. After peaking at the maximum value, the material removal starts to drop, resulting in almost no material removal with the ultimate speed. In this study, the end of a tungsten anode rod was therefore machined by a copper cathode disc rotating at a high circumferential speed. The results showed that tool electrode wear ratio decreases with increasing rotational speed.

Related Topics
Physical Sciences and Engineering Engineering Industrial and Manufacturing Engineering
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