Abstract
The LC generator has many advantages in electrical discharge machining (EDM). It can generate high gap open voltage and high discharge current pulse with short duration under very low voltage input conditions. The shape of current pulse generated by the LC generator with higher rising speed shows superiority in machining efficiency compared to the conventional RC generator. This paper aims to investigate the influential parameters of the LC pulse generator and analyze how inductance, capacitance and switching frequency influence the discharge current pulse and gap open voltage pulse. The results of investigation are used to match the real discharge conditions by experiments. On the other hand, roughness of machined workpiece, cylindricity of drilled holes, tool wear ratio and material removal rate are investigated under different discharge parameters generated by the LC pulse generator.
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