Tool holder
AssigneeToshiba Kikai Kabushiki Kaisha
InventorsYoshiaki Kai, Katsuhito Endo, Yutaka Asanome, Kouichi Katoh
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Abstract
A tool holder has a cutter arbor. The cutter arbor has a shank portion detachably mounted on a spindle, and a mechanism for holding a cutting tool. In the cutter arbor portion, a cavity portion is formed. In the cavity portion, a vibration damping material is filled at a filling rate so as to be capable of obtaining predetermined vibration damping characteristics. Thus, it is possible to provide high vibration damping characteristics, effectively damp vibrations during cutting and improve working precision, without using any special materials, such as damping materials, although the tool holder has a usual shape.
Claims6
A tool holder for a spindle of a machine tool, said tool holder comprising:
- an arbor having a shank portion which is detachably attached on the front end of the spindle, and a mechanism for holding a cutting tool,
- a cavity portion defined in the arbor;
- and
- a vibration damping material charged in the cavity portion at a predetermined charging rate in a manner that the damping material shows vibration damping characteristics.
Dependencies are inferred from the claim text.