发明名称 |
METHOD AND DEVICE FOR MANUFACTURING BENT PRODUCT |
摘要 |
<p>A manufacturing method for a bent product which can guarantee a high working accuracy and which can provide a large bending angle without damage to the surface condition of a metal material even when a widely varying bent shape is desired or when it is necessary to perform bending of a high strength metal material. A bent product having a three-dimensionally bent portion intermittently or continuously in the lengthwise direction is manufactured by supporting a steel pipe 1 at a first position A while feeding it in the lengthwise direction, locally heating the steel pipe 1 being fed at a second position B, cooling the heated portion of the steel pipe 1 at a third position C, and varying the position of a gripping means 15, which grips the steel pipe 1 in a region D downstream of the third position C, in a three-dimensional direction including the feed direction of the steel pipe 1 in a workspace including a space on the upstream side of the third position C in the feed direction of the steel pipe 1 to impart a bending moment to the heated portion of the steel pipe 1.</p> |
申请公布号 |
EP2368650(A1) |
申请公布日期 |
2011.09.28 |
申请号 |
EP20090823570 |
申请日期 |
2009.10.27 |
申请人 |
SUMITOMO METAL INDUSTRIES, LTD.;SUMITOMO PIPE & TUBE CO., LTD. |
发明人 |
TOMIZAWA, ATSUSHI;SHIMADA, NAOAKI;INOUE, SABURO;KUWAYAMA, SHINJIRO |
分类号 |
B21D7/16;B21D7/12 |
主分类号 |
B21D7/16 |
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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