Old Version
AiM

Advances in Manufacturing ›› 2024, Vol. 12 ›› Issue (2): 270-287.doi: 10.1007/s40436-023-00471-z

• • 上一篇    

Research on feed-pulse collaborative control method in micro-electrical discharge machining

Qiang Gao1,2, Ya-Ou Zhang1,2, Xue-Cheng Xi1,2, Yuan-Ding Wang3, Xiao-Fei Chen3, Wan-Sheng Zhao1,2   

  1. 1 School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China;
    2 State Key Laboratory of Mechanical System and Vibration, Shanghai 200240, People's Republic of China;
    3 Shanghai Institute of Space Propulsion, Shanghai 201112, People's Republic of China
  • 收稿日期:2023-04-03 修回日期:2023-06-01 发布日期:2024-05-16
  • 通讯作者: Ya-Ou Zhang,E-mail:yaou_zhang@sjtu.edu.cn E-mail:yaou_zhang@sjtu.edu.cn
  • 作者简介:Qiang Gao is currently pursuing a doctoral degree in the Discipline of Mechanical Engineering at School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China. He has completed a B.S. degree in Mechanical Engineering from Jilin University, Changchun, China. His areas of interests are electrical discharging machining, pulse power supply for EDM, and adaptive servo control technology;
    Ya-Ou Zhang is currently working as an assistant professor in the Discipline of Mechanical Engineering at School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China. He received the M.S. degree from Nanjing University of Aeronautics and Astronautics in 2003 and Ph.D. degree from Shanghai Jiao Tong University in 2008. His areas of interests are electrical discharging machining, specialized robot, and smart manufacturing;
    Xue-Cheng Xi is currently working as an assistant professor in the Discipline of Mechanical Engineering at School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China. He received the M.S. and Ph.D. degrees in Automatic Control and Mechatronics from the National University of Singapore, Singapore, in 2003 and 2008. His areas of interests are electrical discharging machining, process and motion control, CNC systems, and artificial intelligence in manufacturing. He has contributed to more than forty publications in international journals/conference proceedings;
    Yuan-Ding Wang is currently working as a senior engineer in the shanghai Institute of Space Propulsion, Shanghai, China. He received the B.S. and Ph.D. degrees from Nanjing University of Science and Technology (NUST) in 2010 and 2016. His research interests include advanced space propulsion technologies and application of electric discharge technology in space propulsion system;
    Xiao-Fei Chen is currently working as a senior engineer in shanghai Institute of Space Propulsion, Shanghai, China. She received the M.S. degree from Harbin Institute of Technology in 2010. Her areas of interests are electrical discharging machining, machining process for production and special structure;
    Wan-Sheng Zhao is currently working as a professor in the Discipline of Mechanical Engineering at School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China. He received the B.S., M.S. and Ph.D. degrees in Mechanical Engineering from Harbin Institute of Technology in 1982, 1984, and 1989. His research interests include electrical discharging machining, CNC systems for EDM machines towards smart manufacturing, and artificial intelligence in manufacturing.
  • 基金资助:
    This work is financially supported by the National Natural Science Foundation of China(Grant Nos.52175426,52075333),National Science and Technology Major Projects of China(Grant No.2018ZX04005001).

Research on feed-pulse collaborative control method in micro-electrical discharge machining

Qiang Gao1,2, Ya-Ou Zhang1,2, Xue-Cheng Xi1,2, Yuan-Ding Wang3, Xiao-Fei Chen3, Wan-Sheng Zhao1,2   

  1. 1 School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China;
    2 State Key Laboratory of Mechanical System and Vibration, Shanghai 200240, People's Republic of China;
    3 Shanghai Institute of Space Propulsion, Shanghai 201112, People's Republic of China
  • Received:2023-04-03 Revised:2023-06-01 Published:2024-05-16
  • Contact: Ya-Ou Zhang,E-mail:yaou_zhang@sjtu.edu.cn E-mail:yaou_zhang@sjtu.edu.cn
  • Supported by:
    This work is financially supported by the National Natural Science Foundation of China(Grant Nos.52175426,52075333),National Science and Technology Major Projects of China(Grant No.2018ZX04005001).

PDF

42

摘要： Reducing the short-circuit rate and increasing the effective discharge rate are important targets for improving the servo control effect of micro-electrical discharge machining (micro-EDM), as these two indicators are closely related to the machining efficiency and quality. In this study, a feed-pulse collaborative control (FPCC) method is proposed for micro-EDM based on two dimensions (space and time). In the spatial dimension, a feed control strategy with a discharge holding process is adopted. Meanwhile, in the time dimension, a forward-looking pulse control strategy is adopted, in which the pulse interval is adjusted based on a sequence analysis of feed commands and discharge states. Process experiments are carried out to determine the key parameters used in this method, including the discharge holding threshold and pulse interval adjustment value (Toff adj). The feed smoothness and discharge sufficiency analyses of the experimental results show that compared to the traditional double threshold average voltage method, the FPCC method reduces the number of long-distance retreats by 64 % and improves the effective discharge time by 40 %.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-023-00471-z

关键词: Micro-electrical discharge machining (microEDM), Electrode feed control, Discharge pulse control, Machining surface quality

Abstract: Reducing the short-circuit rate and increasing the effective discharge rate are important targets for improving the servo control effect of micro-electrical discharge machining (micro-EDM), as these two indicators are closely related to the machining efficiency and quality. In this study, a feed-pulse collaborative control (FPCC) method is proposed for micro-EDM based on two dimensions (space and time). In the spatial dimension, a feed control strategy with a discharge holding process is adopted. Meanwhile, in the time dimension, a forward-looking pulse control strategy is adopted, in which the pulse interval is adjusted based on a sequence analysis of feed commands and discharge states. Process experiments are carried out to determine the key parameters used in this method, including the discharge holding threshold and pulse interval adjustment value (Toff adj). The feed smoothness and discharge sufficiency analyses of the experimental results show that compared to the traditional double threshold average voltage method, the FPCC method reduces the number of long-distance retreats by 64 % and improves the effective discharge time by 40 %.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-023-00471-z

Key words: Micro-electrical discharge machining (microEDM), Electrode feed control, Discharge pulse control, Machining surface quality

Copyright © Advances in Manufacturing
Address：P. O. Box 124, Shanghai University, 99 Shangda Road, Shanghai 200444, China

Tel: 86-21-66135510　 Fax: 86-21-66132736　 E-mail: aim@oa.shu.edu.cn