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Basic study on pulse generator for micro-EDM

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Abstract

An RC pulse generator can easily generate a pulse on-time as short as a several dozen nanoseconds in micro-electro-discharge machining (micro-EDM), but its discharge frequency is low due to the time needed to charge the capacitor in micro-EDM, which has a strong negative effect on the pulse generator’s working efficiency. Therefore, a new transistor-type isopulse generator has been developed for micro-EDM in this research. Evaluation of the machining characteristics proved that the transistor-type isopulse generator is suitable for micro-EDM. The experimental results reveal that the transistor-type pulse train generator is unsuitable for micro-EDM due to its low removal rate: 80-ns and 30-ns pulse on-times of discharge current can be obtained by using the transistor-type isopulse generator developed in this research, and the removal rate of this generator is two or three times higher than that of the traditional RC pulse generator.

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Acknowledgement

The authors wish to express their appreciation to the National 973 Program of China (2003CB716204) for funding this study.

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Authors and Affiliations

  1. State Key Laboratory of Tribology, Department of Precision Instruments & Mechanology, Tsinghua University, Beijing, 100084, People’s Republic of China

    Fuzhu Han & Dingwen Yu

  2. Department of Automation, Beijing University of Posts & Telecommunication, Beijing, 100084, People’s Republic of China

    Li Chen & Xiaoguang Zhou

Authors
  1. Fuzhu Han
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  2. Li Chen
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  3. Dingwen Yu
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  4. Xiaoguang Zhou
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Correspondence to Fuzhu Han.

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Han, F., Chen, L., Yu, D. et al. Basic study on pulse generator for micro-EDM. Int J Adv Manuf Technol 33, 474–479 (2007). https://doi.org/10.1007/s00170-006-0483-9

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  • DOI: https://doi.org/10.1007/s00170-006-0483-9

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