Experimental investigation on wire vibration during fine wire electrical discharge machining process

Abstract

Wire electrical discharge machining (WEDM) is extensively used in machining of conductive materials when producing precision products. Wire vibration has an important role in resulted cutting speed and surface finish. In this work, an investigation of the tungsten wire vibration during wire electrical discharge machining process with second cut conditions was performed. The vibration amplitude and frequency of wire were determined. Furthermore, the vibration mode of wire movements was investigated with changing the offset values. Also, the wire movement during WEDM can be recorded using a high-speed video camera. Cutting speed and surface finish values were measured. Then, the possibility of evaluating the wire vibration is also discussed and is related to the offset, cutting speed, and surface finish parameters. Also, the wire deflection, vibration power spectrum density, and amplitude envelope were also investigated.