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Fabrication of 3D Micro Structure Using Micro Electrical Discharge Milling  

이병욱 (서울대학교 대학원 기계항공공학부)
이상민 (서울대학교 대학원 기계항공공학)
김보현 (서울대학교 대학원 기계항공공학)
주종남 (서울대학교 기계항공공학부)
Publication Information
Abstract
As mechanical structures are minimized, the demand on micro dies and molds has increased. Machining complex 3D shapes requires fabrication procedures for preparing the electrodes. Micro electrical discharge milling using a simple shape electrode can produce 3D micro structure. In this paper the machining characteristics of micro electrical discharge milling according to depth of cut and capacitance are investigated. The machining time is diminished when simple tool-paths and algorithms for changing the feedrate are applied. But a distorted bottom shape and a tapered wall shape are inevitable after machining. The distorted bottom shape and the taper angle of wall are reduced by finish machining.
Keywords
Micro Electrical Discharge Milling; Depth of Cut; Capacitance; Tool Paths; Finish Machining;
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