Analysis of the Machining Characteristics of EDM as Functions of the Mobilities of Electrons and Ions

作者：Yoo Byung Han; Min Byung Kwon^*; Lee Sang Jo

来源：International Journal of Precision Engineering and Manufacturing, 2010, 11(4): 629-632.

DOI：10.1007/s12541-010-0074-4

• EDM
• Tool wear ratio
• Mobility
• Electron
• Ion

Electrical discharge machining (EDM) is a process that can be used effectively to machine conductive metals regardless of their hardness. In die EDM process, material removal occurs because of the thermal energy of the plasma channel between the electrode and the workpiece. During EDM, the electrode as well as the workpiece is abraded by the thermal energy. Tool wear adversely affects the machining accuracy and increases tooling costs. Many previous studies have focused on mitigating the problems of tool wear by investigating various EDM parameters. In this study. the tool wear problem was investigated on the basis of the mobilities of electrons and ions in the plasma channel. The material removal volumes of both the electrode and the workpiece were compared as functions of the gap voltage. The material removal difference according to the capacitance was also investigated. The tool wear ratio was calculated under different EDM condition and all EDM conditions for reducing the tool wear ratio was suggested.

• 出版日期2010-8