Title:
油圧チャックを備えるドリルジグアセンブリ、及びパイロットボアを有するドリルガイド
Document Type and Number:
Japanese Patent JP3553882
Kind Code:
B2
Abstract:
A drill jig assembly for accurately supporting a drill relative to a workpiece is provided that includes a drill having a cylindrical shank, a chuck having a cylindrical exterior, and a hydraulically-operated collet for detachably gripping the drill shank, a housing tube for slidably and rotatably supporting the cylindrical exterior of the chuck, and a drill guide mounted on the distal end of the housing tube. The drill guide is formed from a carbide bushing having a pilot bore for rotatably receiving the cylindrical shank of the drill and maintaining a pilot concentric alignment between the bushing and the shank during a drilling operation. The use of hydraulic chuck in combination with the pilot bore of the carbide bushing allows the drill to accurately bore holes in a workpiece to very tight tolerances in a one-step, extend and retract drilling operation.
Inventors:
Lipoher, Steve, Pee.
McGill, William, Sea.
Tunis, William, Bee.
McGill, William, Sea.
Tunis, William, Bee.
Application Number:
JP2000564766A
Publication Date:
August 11, 2004
Filing Date:
June 10, 1999
Export Citation:
Assignee:
Kennametal Parakeet-Politted
International Classes:
B23B31/02; B23B31/20; B23B31/30; B23B47/18; B23B49/00; B23B49/02; (IPC1-7): B23B49/00
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Katsuichi Nishimoto
Kato Kazunori
Katsuichi Nishimoto