Because electrode wear in microelectrical discharge machining significantly deteriorates the machining accuracy, the electrode wear must be compensated in process to improve the geometric accuracy of the product. Therefore, there has been a substantial amount of research on electrode wear and the compensation for EDM processes. In this study, a novel control method for a micro-EDM process using discharge pulse counting is proposed. The method is based on the proportional relationship between the removed workpiece volume and the number of discharge pulses. A model-based control was designed using the relationship between the pulse frequency and gap distance, and implemented in an actual micro-EDM system. Experimental results demonstrated that the developed method makes two- and three-dimensional micro-EDM milling processes fast and accurate without complex path planning to compensate electrode wear.
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e-mail: bkmin@yonsei.ac.kr
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June 2008
Special Section: Micromanufacturing
Model-Based Pulse Frequency Control for Micro-EDM Milling Using Real-Time Discharge Pulse Monitoring
Jae Won Jung,
Jae Won Jung
School of Mechanical Engineering,
Yonsei University
, 134 Shinchon, Seodaemun, Seoul 120-749, Korea
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Young Hun Jeong,
Young Hun Jeong
School of Mechanical Engineering,
Yonsei University
, 134 Shinchon, Seodaemun, Seoul 120-749, Korea
Search for other works by this author on:
Byung-Kwon Min,
Byung-Kwon Min
School of Mechanical Engineering,
e-mail: bkmin@yonsei.ac.kr
Yonsei University
, 134 Shinchon, Seodaemun, Seoul 120-749, Korea
Search for other works by this author on:
Sang Jo Lee
Sang Jo Lee
School of Mechanical Engineering,
Yonsei University
, 134 Shinchon, Seodaemun, Seoul 120-749, Korea
Search for other works by this author on:
Jae Won Jung
School of Mechanical Engineering,
Yonsei University
, 134 Shinchon, Seodaemun, Seoul 120-749, Korea
Young Hun Jeong
School of Mechanical Engineering,
Yonsei University
, 134 Shinchon, Seodaemun, Seoul 120-749, Korea
Byung-Kwon Min
School of Mechanical Engineering,
Yonsei University
, 134 Shinchon, Seodaemun, Seoul 120-749, Koreae-mail: bkmin@yonsei.ac.kr
Sang Jo Lee
School of Mechanical Engineering,
Yonsei University
, 134 Shinchon, Seodaemun, Seoul 120-749, KoreaJ. Manuf. Sci. Eng. Jun 2008, 130(3): 031106 (11 pages)
Published Online: May 6, 2008
Article history
Received:
April 16, 2007
Revised:
January 19, 2008
Published:
May 6, 2008
Citation
Jung, J. W., Jeong, Y. H., Min, B., and Lee, S. J. (May 6, 2008). "Model-Based Pulse Frequency Control for Micro-EDM Milling Using Real-Time Discharge Pulse Monitoring." ASME. J. Manuf. Sci. Eng. June 2008; 130(3): 031106. https://doi.org/10.1115/1.2917305
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