发明名称 |
aparelho de fabricação para um membro dobrado, método para fabricar um membro dobrado e membro dobrado |
摘要 |
A bent member having a bent portion with an extremely small bend radius such as at most 1 - 5 times its wall thickness and an apparatus and method for its manufacture are provided. A bent member 21 is manufactured by supporting a rectangular tube 16 by a first support means 11 disposed at a first position A while performing relative feeding of the rectangular tube in its lengthwise direction, locally heating the rectangular tube 16 by a heating means 12 disposed at a second position B, cooling the rectangular tube by a cooling means 13 disposed at a third position C, and at the time of working, applying a shear force to the heated portion of the rectangular tube 16 with a shear force applying means 14 disposed in a downstream region D by moving the device 14 two-dimensionally or three-dimensionally simultaneously in the feed direction of the rectangular tube 16 and in a direction generally parallel to a transverse cross section in the lengthwise direction of the rectangular tube 16 which was heated by the heating means 12. |
申请公布号 |
BR112012007880(A2) |
申请公布日期 |
2016.03.15 |
申请号 |
BR20121107880 |
申请日期 |
2010.08.23 |
申请人 |
SUMITOMO METAL INDUSTRIES LTD;SUMITOMO PIPE & TUBE CO., LTD., |
发明人 |
ATSUSHI TOMIZAWA;HIROAKI KUBOTA;SABURO INOUE;SHINJIRO KUWAYAMA |
分类号 |
B21D7/08;B21D7/16 |
主分类号 |
B21D7/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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