Abstract
In this study, the movement of tungsten wire electrode during fine wire EDM was investigated by the direct observation using a high-speed video camera. Then, a high-speed observation model consisting of a running tungsten wire of 50μm in diameter, metal mold steel workpiece of 1mm in thickness and an acrylic small tank was built. The wire movements were observed from the rear and the side of the wire by the camera. The analyzed results showed that the amplitude and the frequency spectrum of wire vibration during wire EDM varied significantly with the machining positon of workpiece between the upper and lower wire guides. Also, the amplitude envelope of wire electrode during the process was clarified.
