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Study of energy distribution to electrodes in a micro-EDM process by utilizing the electro-thermal model of single discharges

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Abstract

Micro-electrical discharge machining (μ-EDM) has recently received increased attentions in high precision machining and micro manufacturing. Since μ-EDM is a very complex process, it is difficult to develop a comprehensive model to analyze and predict its characteristics. This makes μ-EDM more difficult to control and requiring high skilled, experienced operators. Although electro-thermal models have been developed to estimate the material removal rate, tool wear ratio and surface roughness of the μ-EDM process, since they are based on the usage of incorrect value of fraction of energy distributed to electrodes, the estimations deviate significantly from the experimental results. This paper presents an experimental study of the fraction of energy distributed to the electrodes of a μ-EDM process where the material of both electrodes and dielectric are in concern. The fractions of the energy are estimated using an electro-thermal model based on controllable parameters, and were simplified by empirical models for investigation and comparison.

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Authors and Affiliations

  1. School of Mechanical Engineering, Kyungpook National University, 80 Daehak-ro, Bukgu, Daegu, 702-701, Korea

    Kien Trung Hoang, Satish Kumar Gopalan & Seung-Han Yang

Authors
  1. Kien Trung Hoang
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  2. Satish Kumar Gopalan
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  3. Seung-Han Yang
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Corresponding author

Correspondence to Seung-Han Yang.

Additional information

Recommended by Associate Editor Jong Soo Ko

Kien Trung HOANG received his B.S. degree from Hanoi University of Science and Technology, Vietnam in 2007. In 2009, he received M.S. degree from Kyungpook National University, South Korea where he is now a Ph.D. candidate. His research interests include optimization, modeling and control for traditional, non-traditional and hybrid machining processes.

Seung-Han YANG received his B.S. degree from Seoul National University, South Korea in 1986. He received M.S. degree from University of Illinois Chicago and Ph.D. from University of Michigan Ann Arbor in 1988 and 1995, respectively. He is a professor at the School of Mechanical Engineering, Kyungpook National University in Daegu, South Korea. His main research interests include manufacturing system control and measurement.

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Hoang, K.T., Gopalan, S.K. & Yang, SH. Study of energy distribution to electrodes in a micro-EDM process by utilizing the electro-thermal model of single discharges. J Mech Sci Technol 29, 349–356 (2015). https://doi.org/10.1007/s12206-014-1241-9

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  • DOI: https://doi.org/10.1007/s12206-014-1241-9

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