ワイヤ放電加工におけるアプローチ点形状制御
2004 年 38 巻 87 号 p. 16-23
詳細
2004 年 38 巻 87 号 p. 16-23
In this paper, we describe a method for controlling the entrance mark upon WEDM. The entrance mark, which causes a critical error in the superfine machining, is a tiny hollow space generated on the interface between the approach and the machining path. The main cause of the mark was determined to be the reduction of the machined volume during exiting of the wire electrode from the machining path to the approach. A method for reducing the mark using of time control based on the volume model is proposed. The accuracy of this method can be further improved by considering the change in the wire vibration caused by the off-time control. The improved method can not only reduce the mark but also control the shape of the mark from concave to convex.
