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    Apparatus that manufactures closed-structure part
    1.
    发明申请
    Apparatus that manufactures closed-structure part 审中-公开

    公开(公告)号：US20190039108A1

    公开(公告)日：2019-02-07

    申请号：US15999494

    申请日：2018-08-21

    申请人： JFE Steel Corporation

    发明人： Kazuhiko Higai ,  Yuji Yamasaki

    IPC分类号： B21C37/15 ,  B21D5/01 ,  B21C37/08 ,  B21D53/88

    CPC分类号： B21C37/155 ,  B21C37/0815 ,  B21C37/15 ,  B21D5/015 ,  B21D53/88

    摘要： An apparatus that manufactures a closed-structure part includes a bottom portion and left and right side wall portions, including a press-forming die that form a plurality of first out-of-plane deformed portions and bent portions, the first out-of-plane deformed portions being formed in a region of a workpiece corresponding to the bottom portion and arranged along a longitudinal direction, each of the first out-of-plane deformed portions having a recessed shape or a protruding shape; a pad and a punch that squash the first out-of-plane deformed portions by clamping the region of the workpiece corresponding to the bottom portion therebetween, a cross-sectional shape of a pressing portion of the punch being curved along the longitudinal direction; and bending dies that bend the bent portions by pressing the punch into a space therebetween while the region of the workpiece corresponding to the bottom portion is clamped between the pad and the punch.

    Manufacture method of tubular member and tubular member manufactured by the same
    8.
    发明授权
    Manufacture method of tubular member and tubular member manufactured by the same 有权
    由其制造的管状构件和管状构件的制造方法

    公开(公告)号：US09403199B2

    公开(公告)日：2016-08-02

    申请号：US14354335

    申请日：2012-10-11

    申请人： Yoshiaki Kadoma

    发明人： Yoshiaki Kadoma

    IPC分类号： B21D41/02 ,  B21B23/00 ,  B21C37/08 ,  B21D5/01 ,  F16L9/17 ,  B21C37/15 ,  F16L9/02 ,  F16L23/032

    CPC分类号： B21B23/00 ,  B21C37/0815 ,  B21C37/157 ,  B21D5/015 ,  B21D41/02 ,  F16L9/02 ,  F16L9/17 ,  F16L23/032

    摘要： An expandable tube portion including slots arranged in a staggered fashion is expanded. When the expandable tube portion is expanded, the individual slots open to a cut end portion of the expandable tube portion are transformed to open in V-shape while the whole body of the expandable tube portion is transformed to a lattice configuration. Hence, the tube expansion only need to apply a working force required to bend intersections of the lattice configuration, resulting in the reduction of the working force for tube expansion. As a result, the working force for tube expansion does not open a butt connection portion of a subject matter, negating the need for previously weld bonding the butt connection portion of the subject matter.

    摘要翻译： 包括以交错方式布置的狭缝的可扩张管部分被扩大。 当可膨胀管部分膨胀时，向可扩张管部分的切割端部开口的各个槽变形为V形开口，而可扩张管部分的整个体转变为格子状。 因此，管膨胀仅需要施加弯曲格子结构的交点所需的加工力，导致管膨胀的作用力的降低。 结果，用于管膨胀的工作力不会打开主体的对接连接部分，从而不需要预先焊接接合主体的对接连接部分。