Tool holder
AssigneeToshiba Kikai Kabushiki Kaisha
InventorsYoshiaki Kai, Katsuhito Endo, Yutaka Asanome, Kouichi Katoh
Life of this patent
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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.
Claims5
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 a front end of the spindle, a flange portion, and a mechanism for holding a cutting tool;
- a cavity portion defined in an end face of the flange portion;
- a vibration damping material charged in the cavity portion, and
- cover member arranged on said end face and configured to seal said cavity portion,
- wherein said end face is opposite another end face of said flange portion from which the shank portion extends, and
- wherein said end faces are substantially perpendicular to a longitudinal axis of said arbor.
Dependencies are inferred from the claim text.