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Title:
DRILL CHUCK AND DRILL POLISHING MACHINE
Document Type and Number:
Japanese Patent JP2010012590
Kind Code:
A
Abstract:

To provide a drill chuck, which can easily perform fastening and unfastening operation of a drill without any tool, has high claw posture stability, and has a simple structure, and to provide a drill polishing machine for polishing the front end part of the drill held in a sandwiched state by the drill chuck.

Inclined grooves having such a shape that a depth increases in an upward direction of the wall are provided in distribution directions in a lower inner wall in a drill chuck. Approximately right-angled triangular plate claws are guided by the inclined grooves. The opening/shutting level and direction involving advance or retreat of each of the claws are performed in a predetermined range by a long hole formed in the halfway of the face of each of the claws and a guide pin introduced into the long hole. In the drill polishing machine, in such a state that the drill is held in a sandwiched state by the drill chuck described in claim 1, two flanks located at the front end are successively and evenly polished to regenerate a cutting edge to a sharp state.


More Like This:
JPH05261608FINGER CHUCK
WO/2007/028287A SELF-LOCKING DRILL CHUCK
Inventors:
NISHIGAKI TAKANOBU
FUJIWARA SATORU
Application Number:
JP2008194130A
Publication Date:
January 21, 2010
Filing Date:
July 01, 2008
Export Citation:
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Assignee:
NISHIGAKI KOGYO KK
International Classes:
B23B31/12; B24B3/26
Domestic Patent References:
JPH0852606A1996-02-27
JPS5318691U1978-02-17
JPS505433B11975-03-04
JP64219Z
JPH04226816A1992-08-17
JPH0852606A1996-02-27
JPS5318691U1978-02-17
JPS505433B11975-03-04