Title:
RETRACTING CHUCK
Document Type and Number:
WIPO Patent Application WO/2017/138307
Kind Code:
A1
Abstract:
Provided is a retracting chuck that does not rattle even though a moving body can be operated in the axial direction, and that enables turning in which the grasp accuracy is increased and vibration and chatter are inhibited. The retracting chuck (100) is provided with: a body (1) comprising a rear body (2) disposed on the axial rear side and a moving body (3) disposed on the axial front side; a plunger (8) moving axially in the body (1); and a master jaw (6) which engages with the plunger (8) and which is caused by a wedge action to move in the radial direction by a slot (3a) provided to the moving body (3). The moving body (3) moves in the axial direction relative to the rear body (2). In the rear body (2), a plate spring (11) is disposed in a bridging manner between seats (2a) provided at a distance from each other, and the plate spring (11) is fastened by a bolt (13) to each of the seats (2a). Between the seats (2a), the plate spring (11) is fastened by a bolt (16) to a seat (3b) of the moving body (3).
Inventors:
NISHIMIYA TAMIO (JP)
Application Number:
PCT/JP2017/001333
Publication Date:
August 17, 2017
Filing Date:
January 17, 2017
Export Citation:
Assignee:
KITAGAWA IRON WORKS CO (JP)
International Classes:
B23B31/16
Domestic Patent References:
| WO2003008135A1 | 2003-01-30 |
Foreign References:
| JP2015058529A | 2015-03-30 | |||
| US3460849A | 1969-08-12 | |||
| JP2003001507A | 2003-01-08 | |||
| JPH06277910A | 1994-10-04 |
Other References:
See also references of EP 3401041A4
Attorney, Agent or Firm:
KASEGUMA Tsuguhisa (JP)
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