Study on decreasing tool wear in EDM due to arc spots sliding on electrodes

被引：23

作者：

Kunieda, Masanori ^{[1
]}

Kameyama, Atsushi ^{[1
]}

机构：

[1] Tokyo Univ Agr & Technol, Dept Mech Syst Engn, Koganei, Tokyo 1848588, Japan

来源：

PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY | 2010年 / 34卷 / 03期

基金：

日本学术振兴会;

关键词：

Tool electrode wear; Dry EDM; Discharge crater; Arc column; Relative speed;

D O I：

10.1016/j.precisioneng.2010.01.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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. (C) 2010 Elsevier Inc. All rights reserved.

引用

页码：546 / 553

页数：8