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마이크로 팩토리를 위한 미세 방전 가공 장치의 해석 및 제어
유병한(B. H. Yoo),김기원(K. W. Kim),김태곤(T. G. Kim),정재원(J. W. Jung),정영훈(Y. H. Jeong),민병권(B-K. Min),이상조(S. J. Lee) 한국생산제조학회 2005 한국공작기계학회 추계학술대회논문집 Vol.2005 No.-
Electrical discharge machining method is a valuable manufacturing method in the microfactory system. In this study, a model-based process analysis and control methods are developed. The electric discharge power simulation and process simulation can be introduced and the optimization of EDM machining condition for the better understanding of electrical discharge phenomena. For the accurate control of machining depth in EDM, a real time control method is developed using plasma pulse counting. As a result, it is demonstrated that the flat machined surface can be obtatined using the developed control method.
김기원(K. W. Kim),정영훈(Y. H. Jeong),민병권(B.-K. Min),이상조(S.-J. Lee) 한국정밀공학회 2005 한국정밀공학회 학술발표대회 논문집 Vol.2005 No.10월
In the electro-discharge machining the machining performance is closely related to the characteristics of discharge which can be identified from electrical behavior in gap between workpiece and electrode. Therefore, the accurate prediction of electrical behavior in electro-discharge machining (EDM) is useful to process control and optimization. However, any simulation model for prediction of electrical behavior in EDM process has never been reported until now. In this study, a simulation model is developed to analyze the electrical behavior of electro-discharge plasma which significantly influences electrical behavior in EDM process. For the purpose of this the fundamentals of electro-discharge mechanism such as inception, propagation, formation of plasma channel and termination are investigated to accurately predict the cycle of discharge plasma in EDM. As a result, a mathematical model of electro-discharge plasma is constructed with considering the fundamentals of electro-discharge plasma. Consequently, it is demonstrated that the developed model can predict the electrical behavior of plasma such as electron density in various conditions.