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1. 发明授权

US10265752B2 Method for manufacturing press-formed product and press-forming apparatus 有权
公开(公告)号：US10265752B2
公开(公告)日：2019-04-23
申请号：US14913575
申请日：2014-09-10
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Kenichiro Otsuka , Yoshiaki Nakazawa , Ryuichi Nishimura , Yasuhiro Ito
IPC分类号： B21D5/16 , B21D22/02 , B21D22/24 , B21D22/26
摘要： In forming a press-formed product that is made of a high-tensile steel sheet having a tensile strength of 390 MPa or more, and has a substantially gutter-shaped cross section and an outward continuous flange, wrinkling in ridges and cracking in the outward continuous flange are reduced. A method for manufacturing a press-formed product that is made of a high-tensile steel sheet of 390 MPa or more, and has a substantially gutter-shaped cross section and an outward continuous flange in at least one end in a predetermined direction includes a first step in which, after a first pad restrains at least a part of a portion to be formed into a gutter bottom in a forming material, a second pad restrains at least a part of the end of portions to be formed into ridges and subsequently carries out press forming.

2. 发明授权

US09839951B2 Manufacturing method and manufacturing apparatus of press-formed body 有权
公开(公告)号：US09839951B2
公开(公告)日：2017-12-12
申请号：US14408175
申请日：2013-06-20
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Ryuichi Nishimura , Kenichiro Otsuka , Yoshiaki Nakazawa , Yoshihiko Masuo , Toshiya Suzuki , Yoshiyuki Ikeda
IPC分类号： B21D17/02 , B21D22/26 , B21D53/88 , B21D5/01 , B21J5/12 , B21J13/02
CPC分类号： B21D17/02 , B21D5/01 , B21D22/26 , B21D53/88 , B21J5/12 , B21J13/02
摘要： A press-formed body (15) made of a high-tensile strength steel sheet of 390 MPa or more including a groove bottom part (15a), ridge line parts (15b, 15b) continuous to the groove bottom part (15a), and side wall parts (15c, 15c) continuous to the ridge line parts (15b, 15b), and in which an outward flange (16) is formed at an end part in a longitudinal direction is manufactured by a press-forming apparatus including a punch (11), a die (12), and a pad (14) which presses and binds a press-forming material (13) to the punch (11), thereby forming the press-formed body (15) without providing cutouts at a ridge line part flange portion of the outward flange, or generating lowering of material yield.

3. 发明授权

US10196091B2 Automobile member 有权
公开(公告)号：US10196091B2
公开(公告)日：2019-02-05
申请号：US15502114
申请日：2015-09-03
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Kenichiro Otsuka , Yoshiaki Nakazawa , Ryuichi Nishimura , Yasunori Sawa , Atsushi Ono , Takeshi Kawachi
IPC分类号： B60N99/00 , B62D25/02 , B62D21/02 , B62D25/04 , B62D25/20 , B62D21/15
摘要： This automobile member has a closed cross section including joint portions in which edge portions of two side walls of an inner panel are joined with edge portions of two side walls of an outer panel, in which in a first region, a first region outer height ho1 and a first region inner height hi1 have a constant value and the difference between the first region outer height ho1 and the first region inner height hi1 is smaller than the difference between a second region outer height ho2 and a second region inner height hi2; in a second region, the second region outer height ho2 has a value which is larger than the second region inner height hi2 and constant, or the second region outer height ho2 has a value which is smaller than the second region inner height hi2 and constant; in a first transition region, a first transition region outer height ho1˜2 is continuously varied between the first region outer height ho1 and the second region outer height ho2, and a first transition region inner height hi1˜2 is continuously varied between the first region inner height hi1 and the second region inner height hi2.

4. 发明授权

US10071410B2 Manufacturing apparatus and manufacturing method for stretch-formed product 有权
公开(公告)号：US10071410B2
公开(公告)日：2018-09-11
申请号：US15038941
申请日：2014-12-10
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Ryuichi Nishimura , Yorifumi Sakamoto , Toru Yonebayashi , Yoshihiko Masuo , Yoshiaki Nakazawa , Koji Hashimoto
IPC分类号： B21D25/04 , B21D24/04 , B21D22/22 , B21D35/00
CPC分类号： B21D24/04 , B21D22/22 , B21D25/04 , B21D35/003
摘要： There is provided a manufacturing apparatus and a manufacturing method for a stretch-formed product which can improve the yield of material in the stretch forming performed while clamping the blank by the lock beads. The manufacturing apparatus for a stretch-formed product includes a die and a blank holder which have clamping surfaces facing each other, a punch that, in a state where a margin of a blank of a sheet material is clamped by the clamping surfaces of the die and the blank holder, relatively presses a forming region of the blank into the die and thereby performs stretch forming on the forming region of the blank, and lock beads that are provided on the clamping surfaces of the die and the blank holder in mutually similar shapes and have first surfaces, second surfaces that intersect with the first surfaces, and third surfaces that intersect with the second surfaces from outer edges toward the centers of the die and the blank holder, the first surfaces each having a plurality of depression-protrusion parts.

5. 发明申请

US20150174634A1 MANUFACTURING METHOD AND MANUFACTURING APPARATUS OF PRESS-FORMED BODY 有权
标题翻译：压制体的制造方法和制造装置
公开(公告)号：US20150174634A1
公开(公告)日：2015-06-25
申请号：US14408175
申请日：2013-06-20
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Ryuichi Nishimura , Kenichiro Otsuka , Yoshiaki Nakazawa , Yoshihiko Masuo , Toshiya Suzuki , Yoshiyuki Ikeda
IPC分类号： B21D17/02 , B21J13/02 , B21D53/88 , B21J5/12
CPC分类号： B21D17/02 , B21D5/01 , B21D22/26 , B21D53/88 , B21J5/12 , B21J13/02
摘要： A press-formed body (15) made of a high-tensile strength steel sheet of 390 MPa or more including a groove bottom part (15a), ridge line parts (15b, 15b) continuous to the groove bottom part (15a), and side wall parts (15c, 15c) continuous to the ridge line parts (15b, 15b), and in which an outward flange (16) is formed at an end part in a longitudinal direction is manufactured by a press-forming apparatus including a punch (11), a die (12), and a pad (14) which presses and binds a press-forming material (13) to the punch (11). At a press-forming time, the pad (14) binds a part to be formed into the groove bottom part (15a) and a part having a length of one-third or more of a cross-sectional peripheral length of the ridge line part (15b) starting from a connecting part with the groove bottom part (15a) from among a part to be formed into the ridge line part (15b) in a vicinity of the outward flange (16) at the press-forming material (13). It is thereby possible to surely form the press-formed body (15) without providing cutouts at a ridge line part flange portion of the outward flange, or generating lowering of material yield.
摘要翻译：包括槽底部（15a），与槽底部（15a）连续的棱线部（15b，15b）的390MPa以上的高强度钢板构成的冲压成形体（15）通过包括冲头的冲压成型装置制造与棱线部分（15b，15b）连续的侧壁部分（15c，15c），其中在纵向方向上的端部处形成向外凸缘（16）（11），模具（12）和将冲压成形材料（13）压合并结合到冲头（11）的垫（14）。在压制成形时，焊盘（14）将要形成的部分粘结到槽底部分（15a）中，并且将一部分具有三分之一以上的棱线部分的横截面周长的部分（15b）从与凹槽底部（15a）的连接部分从形成在所述压制成形材料（13）的所述向外凸缘（16）附近的所述脊线部分（15b）中的部分开始，。由此，能够在不向外凸缘的棱线部凸缘部设置切口的情况下可靠地形成冲压成形体（15），或者能够降低材料成品率。

6. 发明授权

US11020785B2 Method and apparatus for manufacturing press component 有权
公开(公告)号：US11020785B2
公开(公告)日：2021-06-01
申请号：US15741345
申请日：2016-06-27
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Masahiro Saito , Ryuichi Nishimura , Yasuharu Tanaka , Takashi Miyagi , Takashi Yamamoto
IPC分类号： B21D22/26 , B21D22/22 , B21D24/04 , B21D22/06 , B21D53/88
摘要： A method and apparatus for manufacturing a press component without generating cracks in a flange on an inner circumferential side of a curved portion includes press working by a free bending method on a blank consisting of an ultra-high tensile strength steel sheet. A press component is manufactured by performing cold press working on a blank of an ultra-high tensile strength steel sheet. By the press working, a material inflow facilitating portion that increases the amount by which a portion of the blank to be formed into an end portion of the press component flows into a portion of the blank to be formed into a flange on an inner circumferential side of the curved portion of the press component is provided in the vicinity of the portion of the blank to be formed into the flange on an inner circumferential side of the curved portion of the press component.

7. 发明授权

US10682681B2 Press forming apparatus and press forming method 有权
公开(公告)号：US10682681B2
公开(公告)日：2020-06-16
申请号：US14893786
申请日：2014-06-27
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Ryuichi Nishimura , Kenichiro Otsuka , Keiji Ogawa , Yoshiaki Nakazawa
IPC分类号： B21D22/22 , B21D22/26 , B21D24/04
摘要： A press forming apparatus includes: a punch; a blank holder disposed adjacent to the punch; a die being a counterpart of the punch; and a pad disposed to face the punch. The punch has a tip surface, an outside surface, and a stepped surface having shapes corresponding to a web portion, vertical wall portions, and a flange portion of a product, respectively. When the punch and the die are relatively moved in a pressing direction in a state where a middle portion in a width direction of a workpiece is sandwiched by the pad and punch and an outer peripheral portion in the width direction of the workpiece is bound by the blank holder and the die, the workpiece's outer peripheral portion in the width direction gets out from between the blank holder and the die, and the flange portion is shaped by the die and the punch's stepped surface.

8. 发明授权

US10406582B2 Press-forming apparatus, method for producing press-formed product using the forming apparatus, and press-formed product 有权
公开(公告)号：US10406582B2
公开(公告)日：2019-09-10
申请号：US15037710
申请日：2014-12-02
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Ryuichi Nishimura , Yoshiaki Nakazawa , Kenichiro Otsuka , Toru Yonebayashi , Ryuichi Harada , Koji Hashimoto
IPC分类号： B29C47/76 , B21D22/26 , B21D24/10 , B21D53/88
摘要： A press-forming apparatus is an apparatus for producing a press-formed product having a hat-shaped cross section that has an external shape that curves in an L shape along a longitudinal direction in a planar view, and includes a punch, a first blank holder, a second blank holder, a preceding portion, a second die and a pad. When pushing the punch into a die to form a metal plate into the press-formed product, a first guide face of the preceding portion precedes a second guide face of the second die, and thereafter sliding of the first blank holder and the preceding portion relative to the punch is restricted and pushing of the punch into the die is continued in the restricted state to form the press-formed product. By this means, the press-formed product in which cracks and wrinkles are reduced is obtained.

9. 发明授权

US09199670B2 Vehicle body 有权
标题翻译：车体
公开(公告)号：US09199670B2
公开(公告)日：2015-12-01
申请号：US14390066
申请日：2013-04-09
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Kenichiro Otsuka , Ryuichi Nishimura , Yoshiaki Nakazawa
IPC分类号： B62D25/20 , B62D21/15 , B62D27/02
CPC分类号： B62D25/2036 , B62D21/157 , B62D27/023
摘要： In a floor cross member configured by a web surface (4a) as the top surface, a ridge part (4b) contiguous to the web surface (4a), and a vertical wall surface (4c) contiguous to the ridge part (4b), having a tensile strength of 440 MPa or larger, flanges (4e) are formed at both longitudinal ends continuously around at least the web surface (4a), the ridge part (4b) and the vertical wall surface (4c), and the floor cross member (4) is connected through the flanges (4e) to a tunnel part (2a) and to a side sill (3). The flange (4e) has a flange width lfc, at the center in the perimeter direction of the curved part (4e-2), not smaller than the minimum flange width lfs of the curved part (4e-2). Accordingly, a vehicle body, which is suppressed in deformation of the floor cross member (4) and improved in the torsional rigidity, is successfully provided.
摘要翻译：在由作为上表面的腹板表面（4a）构成的地板横向构件中，与腹板表面（4a）邻接的脊部（4b）和与脊部（4b）邻接的垂直壁表面（4c）拉伸强度为440MPa以上的凸缘（4e）在两个纵向端部至少连续地形成在腹板表面（4a），脊部（4b）和垂直壁面（4c）上，并且地面交叉构件（4）通过凸缘（4e）连接到隧道部分（2a）和下基底（3）。凸缘（4e）在弯曲部分（4e-2）的周向中心处具有凸缘宽度lfc，不小于弯曲部分（4e-2）的最小凸缘宽度lfs。因此，成功地提供了抑制地板横梁（4）变形并提高扭转刚度的车体。

10. 发明授权

US10807137B2 Production method for producing a press-formed product 有权
公开(公告)号：US10807137B2
公开(公告)日：2020-10-20
申请号：US15544054
申请日：2016-01-25
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Kenichiro Otsuka , Yoshiaki Nakazawa , Ryuichi Nishimura , Masahiro Saito
IPC分类号： B21D5/01 , B21D22/26 , B21D5/02 , B21D24/00 , B21D53/88
摘要： A method for producing a press-formed product that includes a pair of flat sections and a bend section that connects the flat sections, in which a bending radius of the bend section is R2 and an interior angle formed by the pair of flat sections is θ2, includes the steps bellow. In the first forming step, an intermediate formed product including a bend section in which a bending radius is R1 and an interior angle is θ1 is formed. In the second forming step, a portion of a bend section of the intermediate formed product is formed into the bend section of the press-formed product. R1, θ1, R2 and θ2 satisfy the conditions of Formulae (1) to (3) below: 1.05

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