International Journal of Precision Engineering and Manufacturing

Korean Society for Precision Engineering (한국정밀공학회)
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Estimation of Material Removal Volume of a Micro-EDM Drilled Hole Using Discharge Pulse Monitoring

  • Jung, Jae-Won (School of Mechanical Engineering, Yonsei University) ;
  • Ko, Seok-Hoon (School of Mechanical Engineering, Yonsei University) ;
  • Jeong, Young-Hun (Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign) ;
  • Min, Byung-Kwon (School of Mechanical Engineering, Yonsei University) ;
  • Lee, Sang-Jo (School of Mechanical Engineering, Yonsei University)
  • Published : 2007.10.01
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Abstract

When drilling using electrical-discharge machining (EDM), severe electrode wear makes in-process measurements of the depth of the drilled hole and the volume of material removed impossible. To estimate the volume of material removed a reliable real-time discharge pulse counting method is proposed by assuming that the volume removed in EDM is proportional to the number of discharge pulses from an iso-energy pulse generator. The geometry of machined holes, including depths and cross-sectional profiles, is estimated using geometric analysis. A proportional relationship between the volume of material removed and the number of discharge pulses was developed and verified by experiments.

Keywords

References

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