| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration-proof tool holder capable of suppressing chatter vibration and highly precisely machining. SOLUTION: The tool holder for mounting a boring tool, a milling tool or the like at the tip has a dynamic vibration absorber formed inside a weight supported by a viscoelastic substance or the like. A hole of a body and the weight are tapered, and the cross-sectional area becomes larger as closer to the tip of the tool holder. Thus, a rigidity of the tool holder body is improved while the volume of the weight is increased. The viscoelastic substance supporting the weight has its spring constant variable by preload, thereby enabling the properties of the dynamic vibration absorber to be controlled. COPYRIGHT: (C)2005,JPO&NCIPI |
