Prediction of the Surface Machined by EDM Using Iterative Discharge Simulation

연속방전 시뮬레이션을 이용한 미세방전가공 표면의 예측

  • Kim T.G. (School of Mechanical Engineering, Yonsei University) ;
  • Min B.K. (School of Mechanical Engineering, Yonsei University) ;
  • Lee S.J. (School of Mechanical Engineering, Yonsei University)
  • Published : 2006.05.01

Abstract

Simulation of micro electrical discharge machining (micro-EDM) process using finite element analysis is proposed. Multiphysics model which has three steps; heat transfer analysis, structural analysis and electric field analysis is developed for simulation. Machined surface for successive five discharges is simulated using developed multiphysics model. Machined surface roughness was simulated under two discharge conditions and the simulated results are compared with actual machined surfaces. From the comparison it is demonstrated that the model can accurately predict the machined surface with the error less than $0.5{\mu}m$.

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