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    METHOD OF MANUFACTURING CLOSED STRUCTURAL MEMBER, PRESS-FORMING DEVICE, AND CLOSED STRUCTURAL MEMBER
    3.
    发明公开
    METHOD OF MANUFACTURING CLOSED STRUCTURAL MEMBER, PRESS-FORMING DEVICE, AND CLOSED STRUCTURAL MEMBER 有权
    VERFAHREN ZUR HERSTELLUNG EINES GESCHLOSSENEN STRUKTURELEMENTS，PRESSFORMGERÄTUND GESCHLOSSENES STRUKTURELEMENT

    公开(公告)号：EP2351624A1

    公开(公告)日：2011-08-03

    申请号：EP09816299.3

    申请日：2009-09-24

    Applicant: JFE Steel Corporation

    Inventor： HIGAI, Kazuhiko ,  YAMASAKI, Yuji ,  HIRA, Takaaki ,  OCHI, Katsuhiro

    IPC: B21D47/01 ,  B21D22/26 ,  B21D39/02

    CPC classification number: B21D5/10 ,  B21D39/02 ,  B21D47/01 ,  B21D51/06 ,  B21D51/10 ,  Y10T29/49922

    Abstract: The number of sub-parts of a closed structure part and the number of steps for manufacturing the closed structure part can be reduced and, therefore, the closed structure part can be efficiently manufactured. In a hemming press step, a punch 84 is further lowered, and a pair of flange portions 20 and 22 is inserted into a slit clearance 102. At that time, hemming prongs 28 are bent and, each of the hemming prongs 28 sandwiches the flange portion 22. Thus, the flange portion 20, which is one of the two flange portions, is joined to the other flange portion 22. At the same time, a pair of press forming surfaces 96 of the punch 84 presses a metal plate and performs press-forming on a pair of shoulder portions 26 of a blank 24 into a predetermined shape. In this way, the flange portion 20, which is one of the two flange portions, can be fixed to the other flange portion 22 using the hemming prongs 28 (hemming joint). In addition, the pair of shoulder portions 26 of the blank 24 can be press-formed into the predetermined shape.

    Abstract translation: 可以减少封闭结构部分的子部件的数量和用于制造封闭结构部件的步骤数量，因此可以有效地制造封闭结构部件。 在折边压制步骤中，冲头84进一步下降，并且一对凸缘部分20和22被插入狭缝间隙102中。此时，折边尖头28弯曲，并且每个折边叉28夹紧凸缘 因此，作为两个凸缘部中的一个的凸缘部20与另一个凸缘部22接合。同时，冲压件84的一对冲压成形面96挤压金属板，进行 在坯料24的一对肩部26上成形为预定形状。 以这种方式，作为两个凸缘部之一的凸缘部20可以使用折边尖28（折边接头）固定到另一个凸缘部22。 此外，坯料24的一对肩部26可以被压制成预定形状。

    METHOD OF MANUFACTURING CLOSED STRUCTURAL MEMBER, PRESS-FORMING DEVICE, AND CLOSED STRUCTURAL MEMBER
    5.
    发明公开
    METHOD OF MANUFACTURING CLOSED STRUCTURAL MEMBER, PRESS-FORMING DEVICE, AND CLOSED STRUCTURAL MEMBER 有权
    VERFAHREN ZUR HERSTELLUNG EINES GESCHLOSSENEN STRUKTURELEMENTS，PRESSFORM UND GESCHLOSSENES STRUKTURELEMENT

    公开(公告)号：EP2345490A1

    公开(公告)日：2011-07-20

    申请号：EP09816296.9

    申请日：2009-09-24

    Applicant: JFE Steel Corporation

    Inventor： HIGAI, Kazuhiko ,  YAMASAKI, Yuji ,  HIRA, Takaaki ,  OCHI, Katsuhiro

    IPC: B21D47/01 ,  B21D22/26 ,  B21D39/02

    CPC classification number: B21D39/03 ,  B21D5/10 ,  B21D39/00 ,  B21D39/037 ,  B21D39/04 ,  B21D39/048 ,  B23K1/00 ,  B23K1/14 ,  B23K1/16 ,  B23K1/18

    Abstract: A method for reducing the number of sub-parts of a closed structure part and the number of steps for manufacturing the closed structure part is provided and, therefore, the closed structure part is efficiently manufactured. In the method for manufacturing closed structure parts, a punch 84 is moved in the pressing direction. A joint end 19, which is one of two joint ends of a blank 24, is bent using a pressing force exerted by a flange processing portion 102. The joint end 19 overlaps a joint end 21, which is the other joint end of the blank 24. The joint end 19 is made into a latch flange portion 20 for latching the joint end 21. At the same time, the blank 24 is pressed by using two press forming surfaces 96 and 97, and two shoulder portions 26 of the blank 24 are press-formed into predetermined shapes. In this way, the joint end 19 is made into the latch flange portion 20. The latch flange portion 20 latches the other joint end 21, and the latch flange portion 20 can be fixed to the joint end 21. Simultaneously, the two shoulder portions 26 can be press-formed into predetermined shapes.

    Abstract translation: 提供一种用于减少封闭结构部件的子部件数量的方法和用于制造封闭结构部件的步骤数量，因此，有效地制造了封闭结构部件。 在封闭结构部件的制造方法中，冲头84沿按压方向移动。 作为坯料24的两个接合端之一的接合端19由凸缘加工部102施加的按压力弯曲。接合端19与作为坯料的另一个接合端的接合端21重叠 接合端19被制成用于锁定接合端21的闩锁凸缘部分20.同时，坯件24通过使用两个冲压成形表面96和97以及坯件24的两个肩部部分26 被压制成预定形状。 以这种方式，将接合端19制成闩锁凸缘部20.闩锁凸缘部20锁定另一个接合端21，并且闩锁凸缘部20可以固定到接合端21.同时，两个肩部 26可以压制成预定的形状。

    BENT MEMBER AND METHOD FOR MANUFACTURING SAME
    7.
    发明公开
    BENT MEMBER AND METHOD FOR MANUFACTURING SAME 有权
    GEBOGENES ELEMENT UND VERFAHREN ZU SEINER HERSTELLUNG

    公开(公告)号：EP2484461A1

    公开(公告)日：2012-08-08

    申请号：EP10820735.8

    申请日：2010-09-28

    Applicant: JFE Steel Corporation

    Inventor： FUTATSUKA, Takayuki ,  HIGAI, Kazuhiko ,  TAMAI, Yoshikiyo ,  HIRA, Takaaki ,  FUJITA, Takeshi ,  YAMASAKI, Yuji

    IPC: B21D51/16 ,  B21D5/01

    CPC classification number: B21D5/015 ,  B21C37/14 ,  B21D47/01 ,  E04C3/07 ,  E04C2003/0413 ,  E04C2003/0439 ,  E04C2003/0465 ,  Y10T428/12229

    Abstract: A curved-part forming method includes a bending process in which blanks 1 and 2 having a curved outline corresponding to a curve of a curved part 30 in a longitudinal direction is bent into a sectional shape corresponding to a division portion of a sectional shape of the curved part, and a joining process in which two (or three of more) portions 10 and 20 obtained by the bending process are joined together. In a conventional forming method, when single high-strength steel sheets are used are materials, forming into desired curved parts cannot be achieved by one-piece press forming; or, when single low-strength steel sheets are used as materials, forming into curved parts can be achieved, but the parts lack strength. Therefore, the parts have insufficient strength, as a result of which weight is increased due to an increase in the number of reinforcing parts.

    Abstract translation: 弯曲部分形成方法包括弯曲过程，其中具有与弯曲部分30在纵向方向上的曲线相对应的弯曲轮廓的毛坯1和2被弯曲成对应于截面形状的分割部分的截面形状 弯曲部分和通过弯曲处理获得的两个（或三个以上）部分10和20连接在一起的接合过程。 在传统的成型方法中，当使用单个高强度钢板时，通过一体式压制成型不能实现形成所需弯曲部分的材料， 或者，当使用单个低强度钢板作为材料时，可以实现成为弯曲部分，但是部件缺乏强度。 因此，这些部件的强度不足，由于加强部件的数量的增加，重量增加。

    CURVED CLOSED-SECTION STRUCTURAL COMPONENT AND METHOD FOR MANUFACTURING SAME
    8.
    发明公开
    CURVED CLOSED-SECTION STRUCTURAL COMPONENT AND METHOD FOR MANUFACTURING SAME 有权
    处理对CROOKED COMPONENT封闭截面

    公开(公告)号：EP2478977A1

    公开(公告)日：2012-07-25

    申请号：EP10817315.4

    申请日：2010-09-15

    Applicant: JFE Steel Corporation

    Inventor： HIGAI, Kazuhiko ,  FUTATSUKA, Takayuki ,  TAMAI, Yoshikiyo ,  HIRA, Takaaki ,  YAMASAKI, Yuji

    IPC: B21D51/16 ,  B21D5/01 ,  B21D47/01 ,  B21D51/18

    CPC classification number: B21D47/01 ,  B21C37/0803 ,  B21D11/20 ,  B21D47/04 ,  B21D51/06 ,  Y10T29/49391

    Abstract: A method for manufacturing a polygonal shape closed structure part with a bent shape in the longitudinal direction only by press forming is provided. The method uses two metal plates for manufacturing a curvilineal closed structure part and includes a press forming process of forming straight or bent folding lines in the longitudinal direction of the two metal plates at positions corresponding to a polygonal bent shape with a flange formed at least at one of the ends of the width direction of each plate, a process of forming a closed structure by laying the two metal plates so as to overlap each other flange to flange and end to end for ends without flanges and by welding the portions laid so as to overlap each other in the longitudinal direction of the metal plates, and a process of forming a polygonal shape closed structure having a bent shape in the longitudinal direction by holding both ends of the closed structure and by compressing it toward its central axis.

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