Title:
FLUID-PRESSURE-OPERATED CLAMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/207926
Kind Code:
A1
Abstract:
The present invention relates to a clamp having a simple structure and capable of clamping an object to be clamped having a small axial length. A fluid-pressure-operated clamp device has: a clamp body (12) including a shaft-like section (16) having an operating fluid chamber (22) formed therein; and pressurizing means (30, 32, 42) for pressurizing an operating fluid having been introduced into the operating fluid chamber (22). The operating fluid chamber (22) extends axially near the outer periphery of the shaft-like section (16) to the vicinity of the front end of the shaft-like section (16). The clamp body (12) has: an outer peripheral wall (24) defining the outer periphery of the operating fluid chamber (22); a front end wall (26) defining the axial front end of the operating fluid chamber (22); and a cantilever beam-like extension wall (28) extending from the front end wall (26) along a line extending axially from the outer peripheral wall (24), the extension wall (28) being configured so that, when the outer peripheral wall (24) is elastically deformed by the pressurization of the operating fluid, the elastic deformation of the outer peripheral wall (24) will cause the extension wall (28) to be displaced radially inward of the shaft-like section (16) with the front end wall (26) acting as the fulcrum point. The extension wall (28) clamps an object (Wa) to be clamped.
Inventors:
YAMADA ATSUSHI (JP)
Application Number:
PCT/JP2015/003120
Publication Date:
December 29, 2016
Filing Date:
June 22, 2015
Export Citation:
Assignee:
KURODA PRECISION IND LTD (JP)
International Classes:
B23Q3/06; B23B31/40
Foreign References:
| JPH1142524A | 1999-02-16 | |||
| JPS59156714U | 1984-10-20 | |||
| JP2013043254A | 2013-03-04 |
Attorney, Agent or Firm:
OSHIMA & PARTNERS (JP)
Patent business corporation Oshima patent firm (JP)
Patent business corporation Oshima patent firm (JP)
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