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    • 1. 发明专利
    • Bending device
    • JP5304893B2
    • 2013-10-02
    • JP2011514405
    • 2010-05-17
    • 新日鐵住金株式会社住友鋼管株式会社
    • 真二郎 桑山淳 富澤三郎 井上
    • B21D7/16B21D7/08
    • B21D7/12B21D7/162
    • A bending apparatus which manufactures a bent metal member with high productivity and excellent dimensional accuracy is provided. A bending apparatus (10) has a first support mechanism (11) which is adapted for supporting a steel tube (17) while feeding it, a heating mechanism (13) which is adapted for heating all or a portion of the steel tube (17), a cooling mechanism (14) which is adapted for forming a high temperature portion in part of the steel tube (17) by cooling a portion of the steel tube (17) which was heated by the heating mechanism (13), a second support mechanism (15) which is adapted for imparting a bending moment to the high temperature portion and for bending the steel tube (17) to a desired shape by moving two-dimensionally or three-dimensionally while supporting at least a portion of the steel tube (17), and a deformation preventing mechanism (16) which is adapted for preventing deformation of the steel tube (17), wherein at least one of the second support mechanism (15) and the deformation preventing mechanism (16) has a chuck which has a tubular member with a circular, polygonal, or special transverse cross section and which is adapted for gripping the steel tube (17).
    • 2. 发明专利
    • Method and apparatus for manufacturing bent product
    • 制造弯曲产品的方法和装置
    • JP2013176808A
    • 2013-09-09
    • JP2013136788
    • 2013-06-28
    • Nippon Steel & Sumitomo Metal Corp新日鐵住金株式会社Sumitomo Pipe & Tube Co Ltd住友鋼管株式会社
    • TOMIZAWA ATSUSHISHIMADA NAOAKIINOUE SABUROKUWAYAMA SHINJIRO
    • B21D7/16B21D7/00
    • B21D7/16B21D7/12
    • PROBLEM TO BE SOLVED: To provide a manufacturing method for a bent product which can secure high working accuracy and can provide a large bending angle without damaging 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.SOLUTION: 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 changing the position of a gripping means 15, which grips the steel pipe 1, in a region D downstream of the third position C into 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.
    • 要解决的问题:为了提供一种弯曲产品的制造方法,其能够确保高的加工精度并且可以提供大的弯曲角度而不损坏金属材料的表面状态,即使当需要广泛变化的弯曲形状或者当需要时 以进行高强度金属材料的弯曲。解决方案:通过在钢管1的长度方向上进给的同时将钢管1支撑在第一位置A上,制造在长度方向上间断地连续地具有三维弯曲部的弯曲产品, 局部加热在第二位置B进给的钢管1,在第三位置C冷却钢管1的加热部分,并将夹紧钢管1的夹紧装置15的位置改变为区域D 在第三位置C的下游到包括钢管1在第三位置的上游侧的空间的工作空间中的钢管1的供给方向的三维方向 n C在钢管1的进给方向上,以向钢管1的加热部分施加弯曲力矩。