한국정밀공학회:학술대회논문집 (Proceedings of the Korean Society of Precision Engineering Conference)
- 한국정밀공학회 2005년도 추계학술대회 논문집
- /
- Pages.604-607
- /
- 2005
- /
- 2005-8446(pISSN)
플라즈마 모델을 이용한 방전가공의 전기적 거동 예측
Prediction of electric dynamics of electric discharge machining using Plasma model
- Kim K.W. (School of Mechanical Engineering, Yonsei University) ;
- Jeong Y.H. (School of Mechanical Engineering, Yonsei University) ;
-
Min B.K.
(School of Mechanical Engineering, Yonsei University) ;
-
Lee S.J.
(School of Mechanical Engineering, Yonsei University)
- 발행 : 2005.10.01
초록
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 fur 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.
키워드