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Proceedings Paper

Die surface modification technique by EDM with special pulse power supply
Author(s): Xiaohai Li; Decheng Wang; Yu Fang; Bingbing Yan
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Paper Abstract

This paper describes a new method of die surface modification by ordinary Electrical Discharge Machining (EDM) tool. First, the principle of this method is studied. Secondly, the reason for appearance of cracks on the surface of coating layer in the electrical discharge coating with conventional pulse power supply are analyzed. At last, the new type special pulse power supply with additional pulse current is designed. Scenix single-chip is selected as pulse generator, which runs the fastest among all single-chips. The corresponding program can make the pulse power supply produce the additional pulse current. At the same time, the special pulse power supply can communicate different machining parameters with industrial personal computer by serial port of PIC single-chip according to the coating requires, and then PIC single-chip convey machining parameters to Scenix single-chip by the communication interface. Through process experiment, the special pulse power supply for electrical discharge coating behaves well, and the compacted coating layer without cracks deposited on the surface of die by EDM can be obtained, which can prolong the life of die.

Paper Details

Date Published: 24 May 2011
PDF: 6 pages
Proc. SPIE 7997, Fourth International Seminar on Modern Cutting and Measurement Engineering, 79970D (24 May 2011); doi: 10.1117/12.888631
Show Author Affiliations
Xiaohai Li, Jiamusi Univ. (China)
Decheng Wang, Jiamusi Univ. (China)
Heilongjiang Agricultural Vocational and Technical College (China)
Yu Fang, Shanghai Univ. of Engineering Science (China)
Bingbing Yan, Jiamusi Univ. (China)

Published in SPIE Proceedings Vol. 7997:
Fourth International Seminar on Modern Cutting and Measurement Engineering
Jiezhi Xin; Lianqing Zhu; Zhongyu Wang, Editor(s)

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