Vibration Characteristics and Tension Control of a Wire in WEDM

와이어 방전가공기용 와이어의 진동 특성과 장력 변동 조절

Vibrational characteristics and tension fluctuation of a translating wire in WEDM are the main problems to deteriorate the cutting accuracy and processing performance. In this paper, we analyze natural frequencies of the wire used in WEDM, both theoretically and experimentally. To reduce the tension variation of the wire. which directly affects cutting performance. we have designed a simply tension reduction device using springs and rollers. It is shown that tension fluctuation is reduced about 25% using the passive tension controller.