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Recent Patents on a Discharge State Detection of EDM

[ Vol. 15 , Issue. 6 ]

Author(s):

Baocheng Xie*, Le Liu, Xuhui Ji, Yi Wang, Zhaoqi Zeng, Haoliang Gou and Bing Zhang   Pages 3 - 15 ( 13 )

Abstract:


Background: Electrical Discharge Machining (EDM) has been widely applied in manufacturing high strength and high hardness of mental material due to no mechanical forces in the EDM process. The discharge state, an important process parameter of EDM, directly affects the machining quality and machining efficiency. So, it is necessary to detect the real-time discharge state of EDM. Therefore, discharge state detection of EDM at present has been paid more and more attention.

Objective: To meet the increasing requirement of machining quality and machining efficiency in the EDM process, the methods for discharge state detection of EDM are being improved continuously.

Methods: This paper reviews various representative patents related to the methods for discharge state detection of EDM.

Results: By summarizing numerous patents about the methods for discharge state detection of EDM, the main problems such as low detection accuracy and long delay time of discharge state detection of EDM are summarized and analyzed. In addition, the further development of discharge state detection method of EDM is discussed.

Conclusion: The optimization of methods for discharge state detection is conducive to improving machining quality and machining efficiency in the EDM process. Moreover, more relevant patents will be invented in the future.

Keywords:

EDM, discharge state detection, machining quality, machining efficiency, mechanical forces, detection accuracy.

Affiliation:

Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, Beijing Institute of Control Engineering, Beijing, 200085, Beijing Institute of Control Engineering, Beijing, 200085, Beijing Institute of Control Engineering, Beijing, 200085

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