Simulation of Machining Accuracy of 5–axis Dry EDM

Abstract

This paper describes simulation of machining accuracy of 5–axis dry electrical discharge machining (dry EDM). The CAM software for 5–axis dry EDM was also developed based on a CAD software. Error of the processed shape from the target shape increased when the pitch used in finishing was larger than 60% of the tool electrode diameter due to the edge wear of the tool electrode. Hence, the machining accuracy was improved by optimizing the pitch of the tool path and the compensation of the tool electrode wear using the simulation developed.