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Radial gap measurement and manufacturing error evaluation for small hole machined by micro-EDM

Author

Listed:
  • Zhenyuan Jia
  • Xinyi Zheng
  • Fuji Wang
  • Wei Liu

Abstract

In the micro electrical discharge machining (micro-EDM) processing of small hole, measurement of the radial machining gap and evaluating the machining error are difficult. A novel method is proposed for the gap measurement and error evaluation of roundness and position. The method combines the micrograph image processing technology with the searching algorithm of pixel-by-pixel comparison. Measurement examples of three small holes machined in different material workpieces are carried out, and the radial gap distribution, roundness error and position error of the holes are obtained. Furthermore, the maximum relative error of gap measurement and roundness evaluation are 6.84% and 6.72%, respectively. The measurement results and error analyses indicate that the measurement method is effective and accurate.

Suggested Citation

  • Zhenyuan Jia & Xinyi Zheng & Fuji Wang & Wei Liu, 2011. "Radial gap measurement and manufacturing error evaluation for small hole machined by micro-EDM," International Journal of Manufacturing Technology and Management, Inderscience Enterprises Ltd, vol. 22(2), pages 94-106.
    • Handle: RePEc:ids:ijmtma:v:22:y:2011:i:2:p:94-106
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