EDM GAP MODELING AT ELECTRICAL DISCHARGE GRINDING WITH CHANGE OF ELECTRIC POLARITY
Keywords:EDM gap, oscillogram of currents and voltages, equivalent circuit, electrical processes
AbstractThe paper presents an experimental study and modeling in the Simulink graphical environment of the EDM gap at electrical discharge grinding (ED grinding) with change of electric polarit of difficult-to-machine materials. Based on the experimentally obtained oscillograms of currents and voltages in the cutting zone, an EDM gap model has been developed, which implements the nonlinear dependence of the active resistance of the electroerosion gap on its value, which makes it possible to take into account the effect of the interelectrode environment on the parameters of electric discharge pulses. Comparison of the calculated oscillograms obtained in the Simulink model with the experimental ones has shown that during ED grinding, the developed EDM gap model adequately reflects the real electrical processes occurring in the electroerosion gap.
Strelchuk R.M., Uzunian M.D. Sposib elektroeroziinoho almaznoho shlifuvannia zi zminnoiu poliarnistiu elektrodiv, Patent UA, no. 131894, 2019.
Arun, I., Yuvaraj, C., Jyothibabu, P. Influence of Silica on Microstructural Modification of Electrical Discharge Composite Coating and its Wear Performance // Silicon 12, p. 2375–2386 (2020).
Montes, J., Cuevas, F., Reina, F. Modelling and Simulation of the Electrical Resistance Sintering Process of Iron Powders // Met. Mater. Int. 26, p. 1045–1059 (2020).
D’Urso, G., Maccarini, G., Ravasio, C. Influence of electrode material in micro-EDM drilling of stainless steel and tungsten carbide // Int J. Adv. Manuf. Technol. 85, p. 2013–2025 (2016).
Giridharan, A., Samuel, G. Investigation into erosion rate of AISI 4340 steel during wire electrical discharge turning process // Machining Science and Technology, p. 287-298, (2018).
Sukhov A .N. Matematicheskaya obrabotka rezultatov izmerenij. – Moscow: MISI, 1982. – 89 p.
Tarasik V. P. Matematicheskoe modelirovanie tekhnicheskikh sistem. – Minsk: DizajnPRO, 2004 – 640 p.
R.Andreani, G.Haeser, J.M.Martínez // On sequential optimality conditions for smooth constrained optimization , Optimization 60 (2011), pp. 627–641.
Authors who publish with this Collection agree to the following terms:
1. Authors retain copyright and grant the Collection right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Collection.
2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the Collection's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this Collection.
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.