Increasing discharge energy of micro-EDM with electrostatic induction feeding method through resonance in circuit |
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| Affiliation: | 1. St. Petersburg Department of V.A. Steklov Institute of Mathematics of the Russian Academy of Sciences, 27 Fontanka, St. Petersburg, 191023, Russia;2. St. Petersburg State University, Mathematics and Mechanics Faculty, Universitetsky pr. 28, Petrodvorets, St. Petersburg, 198504, Russia;3. St. Petersburg State University, Physical Faculty, Ulianovskaya st. 3, Petrodvorets, St. Petersburg, 198504, Russia;1. Department of Mechanical Engineering, KIET Group of Institutions, Ghaziabad 201012, India;2. University School of Information, Communication & Technology, GGSIPU, Delhi 110078, India;1. Institute of Technology,Sligo, Ash Lane, Sligo, F91 YW50, Ireland;2. VoxPower, Unit 2 Red Cow Interchange Estate, Ballymount, Dublin 22, D22Y8H2, Ireland;3. University of Manchester, Oxford Rd. Manchester, M13 9PL, UK;1. School of Mechanical Engineering, Shanghai Jiao Tong University, China;2. Department of Precision Engineering, The University of Tokyo, Japan;1. Cardiff School of Engineering, Cardiff University, Cardiff CF24 3AA, UK;2. Dipartimento di Ingegneria Gestionale, dell’Informazione e della Produzione – DIGIP, Università degli Studi di Bergamo, 24044 Dalmine, BG, Italy;3. Arts et Métiers ParisTech, LSIS – UMR CNRS 7296, Aix-en-Provence, France |
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| Abstract: | This paper describes the method to increase discharge energy in micro-EDM using electrostatic induction feeding as the pulse generator. In a previous study, controlled pulse train method was introduced to increase discharge energy and enlarge unit removal per discharge by allowing multiple discharges to occur at the same spot. During observation, it was found that the oscillation of discharge current is excited at higher amplitude even if the same capacitance is used. In this paper, the influence of frequency on discharge energy was investigated. It was found that higher discharge energy can be obtained when machining was done at the resonant frequency of the circuit. Influence of capacitance and inductance on resonant frequency was studied. Probability of discharge continuity at different frequencies was examined. The results confirmed that higher discharge continuity within the pre-determined pulse train duration can be achieved when machining is conducted at resonant frequency, leading to higher material removal rate (MRR). |
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| Keywords: | Micro-electrical discharge machining (EDM) Electrostatic induction feeding method (EIFM) Controlled pulse train method Resonant frequency Discharge energy |
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