Title:
TOOL CLAMPING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/286418
Kind Code:
A1
Abstract:
This tool clamping device comprises: a housing (51); a drawbar (61); a piston (81) that strokes to cause the drawbar (61) to slide between a first position to obtain a tool clamping state, and a second position to obtain a tool unclamping state; and an intermediate member (71). The housing (51) has a first peripheral surface (56), and a first tapered surface (57). An angle formed by the first peripheral surface (56) with respect to a predetermined axis (210) is smaller than an angle formed by the first tapered surface (57) with respect to the predetermined axis (210). The intermediate member (71) has a second peripheral surface (76) which contacts the first peripheral surface (56) when the drawbar (61) is disposed at the second position, and has a second tapered surface (77) which contacts the first tapered surface (57) when the drawbar (61) is disposed at the first position.
Inventors:
HIKITA ISAO (JP)
MIZUKOSHI KENICHI (JP)
MIZUKOSHI KENICHI (JP)
Application Number:
PCT/JP2022/019096
Publication Date:
January 19, 2023
Filing Date:
April 27, 2022
Export Citation:
Assignee:
DMG MORI CO LTD (JP)
International Classes:
B23B31/117; B23B29/24
Foreign References:
| JP2000117576A | 2000-04-25 | |||
| JPH08281504A | 1996-10-29 | |||
| JPH03264203A | 1991-11-25 | |||
| US20080107548A1 | 2008-05-08 | |||
| JPH10277862A | 1998-10-20 | |||
| JPS5859541U | 1983-04-22 | |||
| JP2008006570A | 2008-01-17 | |||
| JP2004314299A | 2004-11-11 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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