형상기억합금 기반 열박음 공구 클램핑 시스템 개발

Conventional shrink-fit tool holders require heavy investments for heating equipment. Generally the heating equipment has to heat the tool holder up to 200~300℃ for tool changes. To improve the existing shrink-fit tool holders, a novel shrink-fit tool holder that is able to unclamp a tool at 40~50℃ has been developed. This holder makes it possible to switch between the clamped and unclamped states by using a simple device, which has lower power, smaller size and lower cost than the heating equipment of the conventional shrink-fit tool holders. In this paper, a simple heating device for the advanced shrink-fit tool holder is suggested. Characteristics of the simple heating device were investigated experimentally.