EDM GAP MODELING AT ELECTRICAL DISCHARGE GRINDING WITH CHANGE OF ELECTRIC POLARITY

Authors

DOI:

https://doi.org/10.20998/2078-7405.2020.93.11

Keywords:

EDM gap, oscillogram of currents and voltages, equivalent circuit, electrical processes

Abstract

The 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.

Author Biographies

Roman Strelchuk, National Technical University "Kharkiv Polytechnic Institute", Kharkiv

Cand. Tech. Science, Associate Professor, Doctoral Student of the Department "Integrated Technologies of Mechanical Engineering named after MF Semko", National Technical University "Kharkiv Polytechnic Institute", Kharkiv, Ukraine

Oleksandr Shelkovyi, National Technical University "Kharkiv Polytechnic Institute", Kharkiv

Dr. Tech. Sciences, Professor, Head of the Department "Integrated Technologies of Mechanical Engineering named after MF Semko", National Technical University "Kharkiv Polytechnic Institute", Kharkiv, Ukraine

References

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Published

2020-12-31

Issue

Section

Mechanical processing of materials, the theory of cutting materials, mathematical and computer simulation of machining p