학술행사명: 17th CIRP conference on Electro Physical and Chemical Machining
개최지: 벨기에-루벵 (Leuven, Belgium)
개최기간: 2013.04.09. - 2013.04.12.
제목: Development of a strip EDM
저자: 송기영(서울대학교) 정도관(동양미래대학교) 박민수(서울과학기술대학교) 주종남(서울대학교)
내용: 스트립 방전가공의 개발과 응용에 대하여 소개함.
원문 Link: http://www.sciencedirect.com/science/article/pii/S2212827113000863
Electrical discharge machining (EDM) is a widespread machining method for the die and mold industry. This method can machine all conductive materials, including hard-to-cut metals, because the machining process uses electro-thermal energy without a cutting force. During EDM, discharge sparks remove not only the material of a workpiece but also the material of an electrode. This machining mechanism thereby causes electrode wear, which creates serious problems, including make-shape errors and low productivity. In order to overcome such problems, a new EDM method using a strip electrode (strip EDM) was developed in this study. Strip EDM uses a continuously applied strip electrode similar to the wire electrode in wire EDM. In the suggested stripelectrode method, a conductive strip moves on the electrode guide. The worn strip is removed, and a new one is supplied continuously. Therefore, the tool electrode acquires no wear during the machining process. This method uses a conductive strip that is made of brass. In the practical machining process, the strip EDM method was applied to EDM milling and EDM turning and their machining characteristics were compared with general EDM methods.