Title:
BENT MEMBER, AND DEVICE AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2011/024741
Kind Code:
A1
Abstract:
Provided are a bent member having a bend having a minute bend radius which is, for example, not more than 1 to 5 times the thickness of the member, and a device and a method for manufacturing the bent member.
A first support means (11) disposed at a first position (A) supports a rectangular pipe (16) while feeding the rectangular pipe (16) in the longitudinal direction, a heating means (12) disposed at a second position (B) partially heats the rectangular pipe (16), and a cooling means (13) disposed at a third position (C) cools the rectangular pipe (16). When working the rectangular pipe (16), a shear force application means (14) which is disposed in a downstream region (D) is moved two-dimensionally or three-dimensionally in two directions at the same time, the two directions being the feeding direction of the rectangular pipe (16) and the direction substantially parallel to one lateral cross-section of the rectangular pipe (16), said lateral cross-section being located at a position in the longitudinal direction and being that which is heated by the heating means (12). By doing so, a shear force is applied to the heated portion of the rectangular pipe (16), and as a result, a bent member (21) is manufactured.
Inventors:
TOMIZAWA ATSUSHI (JP)
KUBOTA HIROAKI (JP)
KUWAYAMA SHINJIRO (JP)
INOUE SABURO (JP)
KUBOTA HIROAKI (JP)
KUWAYAMA SHINJIRO (JP)
INOUE SABURO (JP)
Application Number:
PCT/JP2010/064145
Publication Date:
March 03, 2011
Filing Date:
August 23, 2010
Export Citation:
Assignee:
SUMITOMO METAL IND (JP)
SUMITOMO PIPE & TUBE CO LTD (JP)
TOMIZAWA ATSUSHI (JP)
KUBOTA HIROAKI (JP)
KUWAYAMA SHINJIRO (JP)
INOUE SABURO (JP)
SUMITOMO PIPE & TUBE CO LTD (JP)
TOMIZAWA ATSUSHI (JP)
KUBOTA HIROAKI (JP)
KUWAYAMA SHINJIRO (JP)
INOUE SABURO (JP)
International Classes:
B21D7/16; B21D7/08
Domestic Patent References:
| WO2006093006A1 | 2006-09-08 |
Foreign References:
| JP2007083304A | 2007-04-05 | |||
| JP2000210722A | 2000-08-02 |
Other References:
See also references of EP 2471609A4
JIDOSHA GIJUTSU, vol. 57, no. 6, 2003, pages 23 - 28
"Dieless Bending of Shaped Tubes", SOSEI TO KAKO, vol. 28, no. 313, February 1987 (1987-02-01), pages 214 - 221
"Techniques for Bending a Pipe with a Zero Radius", SOSEI TO KAKO, vol. 35, no. 398, March 1994 (1994-03-01), pages 232 - 237
JIDOSHA GIJUTSU, vol. 57, no. 6, 2003, pages 23 - 28
"Dieless Bending of Shaped Tubes", SOSEI TO KAKO, vol. 28, no. 313, February 1987 (1987-02-01), pages 214 - 221
"Techniques for Bending a Pipe with a Zero Radius", SOSEI TO KAKO, vol. 35, no. 398, March 1994 (1994-03-01), pages 232 - 237
Attorney, Agent or Firm:
HIROSE SHOICHI (JP)
Hirose Shoichi (JP)
Hirose Shoichi (JP)
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