EDM machining quality control and parameters optimization

A rational determination of machining parameters of electrical discharge machining (EDM) is of vital importance to the machining quality. This paper proposes an ANSYS emulation, experimental correction, and numerical fitting method (AEN-XRD method) to determine the relationship between machining parameters and machining indicators of various kinds of machine tools. Firstly, it adopts ANSYS software to make simulation researches of the pit size with different electrical parameters. Theoretical calculation of corresponding machining indicators is presented. Based on the machine data, adjustment is made on the simulation outcome. And thereby, based on the adjusted outcome, numerical fitting method is adopted to determine the functional relation formula of machining parameters and machining indicators. Experiments of different machine tools have shown that there is a relatively high prediction accuracy of machining parameters and they are capable to meet the actual machining demand, which further proves the AEN-XRD method is of great practicability.