Title:
CHUCK DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/002692
Kind Code:
A1
Abstract:
Provided is a chuck device with which a workpiece can be held in a satisfactory manner.
The chuck device is provided with: a cylindrical chuck which includes a first abutting portion positioned on a first side in an axial direction and a second abutting portion positioned on a second side, and which holds a bar-shaped workpiece; a tubular outer tube including on the first side a regulating portion which abuts the first abutting portion to regulate movement of the chuck in the axial direction; and a sleeve which is disposed on an inner peripheral side of the outer tube movably in the axial direction, and which includes on the first side a pressing portion which is driven in the axial direction to abut the second abutting portion. In the chuck, a first tapered surface is formed on the first abutting portion and a second tapered surface is formed on the second abutting portion, wherein a first angle formed by the first tapered surface and a center axis is equal to or less than a second angle formed by the first tapered surface and the center axis. An angle formed by a movement regulating tapered surface of the regulating portion and the center axis, an angle formed by a pressing tapered surface of the regulating portion and the center axis, and an angle formed by the second tapered surface and the center axis are the same.
Inventors:
MIURA KEN (JP)
Application Number:
PCT/JP2016/068591
Publication Date:
January 05, 2017
Filing Date:
June 23, 2016
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
B23B31/20
Foreign References:
| JP2002059305A | 2002-02-26 | |||
| JPS4023114Y | ||||
| US6508475B1 | 2003-01-21 | |||
| JP2014522736A | 2014-09-08 | |||
| US2755094A | 1956-07-17 | |||
| CH373619A | 1963-11-30 | |||
| GB757499A | 1956-09-19 |
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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