Electrode wear estimation model for EDM drilling
This paper presents an effective model of electrode wear estimation for EDM drilling. Pass-through-hole experiments were carried out and wear estimation models have been built. The experimental results showed that the electrode wear amount and the wear rate can be acceptably predicted. To validate the proposed estimation method, repeated experiments using a commercial EDM drilling machine were performed for the determination of parameters of estimation models. Exponential curve fitting was performed to estimate the electrode wear, according to the machining hole count and the machining time. The frequency and time domain estimation models were compensated according to the EDM discharge conditions.
electrode wear estimation edm drilling pass-through hole electrode wear rate (ewr) discharge parameter