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Micro/Meso-scale Shapes Machining by Micro EDM Process  

Kim Young-Tae (Graduate School of Mechanical Engineering, Yonsei University)
Park Sung-Jun (Center for Nano Technology, Yonsei University)
Lee Sang-Jo (School of Mechanical Engineering, Yonsei University)
Publication Information
International Journal of Precision Engineering and Manufacturing / v.6, no.2, 2005 , pp. 5-11 More about this Journal
Abstract
Among the micro machining techniques, micro EDM is generally used for machining micro holes, pockets, and micro structures on difficult-cut-materials. Micro EDM parameters such as applied voltage, capacitance, peak current, pulse width, duration time are very important to fabricate the tool electrode and produce the micro structures. Developed micro EDM machine is composed of a 3-axis driving system and RC circuit equipped with pulse generator. In this paper, using micro EDM machine, the characteristics of micro EDM process are investigated and it is applied to micro holes, slots, and pockets machining. Through experiments, relations between machined surface and voltages and between MRR and feedrate are investigated. Also the trends of tool wear are investigated in case of hole and slot machining.
Keywords
Micro EDM; WEDG (Wire Electro Discharge Grinding); Tool Electrode; Micro Hole; Micro Structure;
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