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1. 发明授权

EP2865459B1 METHOD AND APPARATUS FOR PRODUCING PRESS-MOULDED ARTICLE 有权转让
公开(公告)号：EP2865459B1
公开(公告)日：2018-08-22
申请号：EP13807701.1
申请日：2013-06-20
申请人： Nippon Steel & Sumitomo Metal Corporation
发明人： NISHIMURA, Ryuichi , OTSUKA, Kenichiro , NAKAZAWA, Yoshiaki , MASUO, Yoshihiko , SUZUKI, Toshiya , IKEDA, Yoshiyuki
IPC分类号： B21D22/26 , B21D53/88 , B21D5/01
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.

2. 发明公开

EP3017893A1 PRESS MOLDING DEVICE AND PRESS MOLDING METHOD 有权转让
标题翻译： PRESSFORMVORRICHTUNG UND PRESSFORMVERFAHREN
公开(公告)号：EP3017893A1
公开(公告)日：2016-05-11
申请号：EP14819965.6
申请日：2014-06-27
申请人： Nippon Steel & Sumitomo Metal Corporation
发明人： NISHIMURA, Ryuichi , OTSUKA, Kenichiro , OGAWA, Keiji , NAKAZAWA, Yoshiaki
IPC分类号： B21D22/21 , B21D22/26 , B21D24/04 , B21D24/12
CPC分类号： B21D53/88 , B21D22/26
摘要： A press forming apparatus includes: a punch (31); a blank holder (32) disposed adjacent to the punch (31); a die (41) being a counterpart of the punch (31); and a pad (42) disposed to face the punch (31), wherein the punch (31) has a tip surface (31a), an outside surface (31b), and a stepped surface (31c) having shapes corresponding to a web portion, vertical wall portions, and a flange portion of a product, respectively. As a result that the punch (31) and the die (41) are relatively moved in a pressing direction in a state where a middle portion in a width direction of a workpiece (50) is sandwiched by the pad (42) and the punch (31) and an outer peripheral portion in the width direction of the workpiece (50) is bound by the blank holder (32) and the die (41), the outer peripheral portion in the width direction of the workpiece (50) gets out from between the blank holder (32) and the die (41), and the flange portion is shaped by the die (41) and the stepped surface (31c) of the punch (31).
摘要翻译：一种冲压成型设备，包括：冲头（31）; 邻近冲头（31）设置的坯件（32）; 模具（41）是冲头（31）的对应部件; 以及设置成面对所述冲头（31）的垫（42），其中所述冲头（31）具有尖端表面（31a），外表面（31b）和具有对应于腹板部分的形状的台阶表面（31c），垂直壁部分和产品的凸缘部分。结果，在工件（50）的宽度方向上的中间部分被垫（42）和冲头（42）夹持的状态下，冲头（31）和模具（41）在挤压方向上相对移动所述工件（50）的所述宽度方向的外周部与所述工件（50）的宽度方向的外周部由所述坯料夹持部（32）和所述模具（41）结合，所述工件由模具（41）和冲头（31）的台阶表面（31c）之间形成凸缘部分。

3. 发明公开

EP3441153A1 METHOD FOR PRODUCING PRESS-MOLDED ARTICLE AND PRODUCTION LINE THEREOF 有权转让
公开(公告)号：EP3441153A1
公开(公告)日：2019-02-13
申请号：EP17779108.4
申请日：2017-04-03
申请人： Nippon Steel & Sumitomo Metal Corporation
发明人： NATORI, Junki , NAKAZAWA, Yoshiaki , NISHIMURA, Ryuichi , OGAWA, Keiji
IPC分类号： B21D22/26 , B21D22/20 , B21D24/06
摘要： A method for producing a press-formed product (1) includes a first pressing step and a second pressing step. In the first pressing step, an intermediate formed product (11) is formed from a processed material (25) by using first press tooling (20). The intermediate formed product (11) includes a stepped section (14) of a top plate section (12), a temporary vertical wall section (13) adjacent to the top plate section (12) via a ridge section (15) and having at least part of the shape of the vertical wall section, and a temporary flange section (16) adjacent to the temporary vertical wall section (13) via a temporary ridge section (17). In the second pressing step, the press-formed product (1) is formed from the intermediate formed product (11) by using second press tooling (30). In the second pressing step, forming is performed such that the temporary ridge section (17) is moved toward the temporary flange section (16) with at least part of the top plate section (12) of the intermediate formed product (11) restricted. A press-formed product with no crack or wrinkle can therefore be produced.

4. 发明公开

EP3437751A1 METHOD FOR MANUFACTURING PRESS-FORMED ARTICLE 有权转让
公开(公告)号：EP3437751A1
公开(公告)日：2019-02-06
申请号：EP17775070.0
申请日：2017-03-28
申请人： Nippon Steel & Sumitomo Metal Corporation
发明人： NISHIMURA, Ryuichi , NAKAZAWA, Yoshiaki
IPC分类号： B21D22/26 , B21D5/01
摘要： A production method includes a placement step, a first pressing step, and a second pressing step. In the placement step, a blank plate is placed in press tooling. In the first pressing step, the blank plate is caused to undergo bend forming in such a way that concave ridges (6a), a concave area (2a), and areas of concave-correspondence vertical wall areas that are areas adjacent to the concave ridges (6a) are formed in the blank plate. In the second pressing step, the resultant plate is caused to undergo draw forming in such a way that convex ridges (6b), a convex area (2b), areas of convex-correspondence vertical wall areas that are areas adjacent to the convex ridges (6b) are formed in the resultant plate. Occurrence of wrinkles can therefore be avoided when a press-formed product (1) including a top plate section (2) that rises and falls along the longitudinal direction thereof is produced.

5. 发明授权

EP3037188B1 METHOD FOR MANUFACTURING STRUCTURAL MEMBER FOR AUTOMOBILE BODY, AND PRESS MOLDING DEVICE 有权转让
公开(公告)号：EP3037188B1
公开(公告)日：2018-06-20
申请号：EP14852097.6
申请日：2014-09-10
申请人： Nippon Steel & Sumitomo Metal Corporation
发明人： ITO, Yasuhiro , NISHIMURA, Ryuichi , OTSUKA, Kenichiro , NAKAZAWA, Yoshiaki
IPC分类号： B21D22/26 , B21D24/04 , B21D53/88
CPC分类号： B21D22/26 , B21D5/16 , B21D24/04 , B21D53/88
摘要： To reduce the generation of cracking in the edge of the ridge flange (7a, 7b) and wrinkling near the base of the ridge flange and can suppress an increase in the pad load, while press forming the structural member (1) that is made of a high-tensile steel sheet or a thick steel sheet and that has a substantially gutter-shaped cross section and an outward continuous flange in an end of the structural member. A method for manufacturing the structural member (1), the method including: a first step in which the pad (15, 15A, 15B, 15C, 21) presses the forming material (16) against the punch (13) to raise a portion corresponding to a flange to be formed in ends of at least the gutter bottom (2) and the ridge (3a, 3b) in a direction opposite to the pressing direction, the pad (15, 15A, 15B, 15C, 21) bends an end of a portion to be formed into the ridge (3a, 3b) in the pressing direction and restrains at least a part of the end, and the punch (13) and the die (14) carry out press forming to form an intermediate product while a region other than an end in a portion to be formed into the gutter bottom (2) remains unrestrained.

6. 发明公开

EP3078431A1 PRESS MOLDING DEVICE, PRODUCTION METHOD FOR PRESS MOLDED ARTICLE USING SAID MOLDING DEVICE, AND PRESS MOLDED ARTICLE 有权转让
标题翻译： PRESSFORM装置，用于生产PRESS状物体这种形式的设备，然后按下状物体
公开(公告)号：EP3078431A1
公开(公告)日：2016-10-12
申请号：EP14867823.8
申请日：2014-12-02
申请人： Nippon Steel & Sumitomo Metal Corporation
发明人： NISHIMURA, Ryuichi , NAKAZAWA, Yoshiaki , OTSUKA, Kenichiro , YONEBAYASHI, Toru , HARADA, Ryuichi , HASHIMOTO, Koji
IPC分类号： B21D24/00 , B21D22/26 , B21D24/12
摘要： A press-forming apparatus (20) is an apparatus for producing a press-formed product (10) 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 (31), a first blank holder (32), a second blank holder (33), a preceding portion (54), a second die (53) and a pad (41). When pushing the punch (31) into a die (50) to form a metal plate (70) into the press-formed product (10), a first guide face (50c) of the preceding portion (54) precedes a second guide face (50d) of the second die (53), and thereafter sliding of the first blank holder (32) and the preceding portion (54) relative to the punch (31) is restricted and pushing of the punch (31) into the die (50) is continued in the restricted state to form the press-formed product (10). By this means, the press-formed product (10) in which cracks and wrinkles are reduced is obtained.
摘要翻译：的压制成型装置（20）是一种用于制造具有帽形横截面确实已到外部形状做在沿着在平面图中具有长边方向的L字状的曲线，并且包括冲压成形品（10）冲头（31），第一坯料夹持器（32），第二坯料夹持器（33），一个preceding-部分（54），第二对（53）和一个衬垫（41）。当按下冲头（31）转换成的（50），以形成一个金属板（70）到所述压制成型制品（10），所述preceding-部分中的第一引导面（50℃）（54）之前的第二引导面（50D）的第二至第（53），然后边搅拌滑动第一坯料夹持器（32）和所述preceding-部（54）相对于所述冲头（31）被限制，并且所述冲头（31）的推入模具（ 50）继续进行（在限制状态，以形成压制成型制品10）。通过这种方式，在冲压成形品（10）被降低，这裂纹和皱纹被获得。

7. 发明公开

EP2837548A1 VEHICLE BODY 有权转让
标题翻译：车身
公开(公告)号：EP2837548A1
公开(公告)日：2015-02-18
申请号：EP13775046.9
申请日：2013-04-09
申请人： Nippon Steel & Sumitomo Metal Corporation
发明人： OTSUKA, Kenichiro , NISHIMURA, Ryuichi , NAKAZAWA, Yoshiaki
IPC分类号： B62D21/09 , B62D25/20
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 l fc , at the center in the perimeter direction of the curved part (4e-2), not smaller than the minimum flange width l fs 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：在由腹板表面（4a）作为顶面，与腹板表面（4a）邻接的脊部分（4b）和邻接脊部分（4b）的竖直壁表面（4c）构成的地板横梁中，拉伸强度为440MPa以上时，至少在腹板表面（4a），脊部（4b）和垂直壁面（4c）以及地板交叉部分的两个纵向端连续地形成凸缘（4e）部件（4）通过凸缘（4e）连接到通道部分（2a）和侧梁（3）。凸缘部4e在弯曲部4e-2的周方向中央具有凸缘宽度lfc以上，且不小于弯曲部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）变形并且扭转刚度得到改善的车身。

8. 发明授权

EP3037327B1 STRUCTURAL MEMBER FOR AUTOMOBILE BODY 有权转让
公开(公告)号：EP3037327B1
公开(公告)日：2019-01-09
申请号：EP14852343.4
申请日：2014-09-30
申请人： Nippon Steel & Sumitomo Metal Corporation
发明人： NISHIMURA, Ryuichi , OTSUKA, Kenichiro , ITO, Yasuhiro , NAKAZAWA, Yoshiaki
IPC分类号： B62D25/20 , B62D29/00
CPC分类号： B62D25/20 , B62D27/02 , B62D27/026 , B62D29/007
摘要： [Object] Provided is a structural member for an automotive body, which is excellent in load transfer capability and rigidity by effectively enhancing energy absorption efficiency provided by disposing a groove in the structural member having a substantially gutter-shaped cross section and a groove in the top plate. [Solution] The structural member for an automotive body, the structural member consisting of a press-formed product made of a steel sheet, the press-formed product extending in a predetermined direction, including a top plate, a ridge continuing to the top plate, and a vertical wall continuing to the ridge, and having a substantially gutter-shaped cross section intersecting the predetermined direction, includes at least one groove formed in the top plate, and extending in the predetermined direction, and an outward flange formed at least in a region of the ridge in an end in the predetermined direction. The groove having a depth set according to a width of the groove and a sheet thickness of the steel sheet.

9. 发明公开

EP3401193A1 VEHICLE REAR STRUCTURE 有权转让
公开(公告)号：EP3401193A1
公开(公告)日：2018-11-14
申请号：EP17736009.6
申请日：2017-01-06
申请人： Nippon Steel & Sumitomo Metal Corporation
发明人： NAKAZAWA, Yoshiaki , NISHIMURA, Ryuichi
IPC分类号： B62D25/20
摘要： [Object] To achieve a weight reduction of a car body structure while maintaining collision safety to impacts from the rear side of the vehicle.
[Solution] Provided is a vehicle rear portion structure 1 including a pair of rear frames 4 provided in the vehicle length direction and a rear floor panel 2 joined to the pair of rear frames 4, in which the rear floor panel 2 has a concave section 3 provided from the rear side of the vehicle toward the front side of the vehicle of the rear floor panel 2, and the concave section 3 is formed of a metal sheet having a tensile strength more than or equal to the tensile strength of the pair of rear frames 4. By this configuration, when an impact load from the rear side of the vehicle acts on the concave section 3 of the rear floor panel 2, the rear floor panel 2 can absorb collision energy in a principal way. Thus, the burden of absorption of collision energy by the rear frames 4 is reduced, and accordingly it becomes possible to reduce the wall thickness and the length of the rear frame 4 and a weight reduction of the entire car body structure is achieved.

10. 发明授权

EP2977120B1 PRODUCTION METHOD FOR PRESS-MOLDED MEMBER AND PRESS MOLDING DEVICE 有权转让
公开(公告)号：EP2977120B1
公开(公告)日：2018-06-06
申请号：EP14768860.0
申请日：2014-03-20
申请人： Nippon Steel & Sumitomo Metal Corporation
发明人： NISHIMURA, Ryuichi , NAKAZAWA, Yoshiaki , OTSUKA, Kenichiro
IPC分类号： B21D22/26 , B21D22/20 , B21D24/00 , B21D5/01 , B21D19/08 , B21D53/88
CPC分类号： B21D5/0209 , B21D5/01 , B21D19/08 , B21D22/20 , B21D53/88
摘要： In a press forming step of obtaining, from a blank (300) of high-tensile strength steel sheet of 390 MPa or more, a press-formed product with a shape of cross section having at least a groove bottom part (101), ridge line parts (102), and vertical wall parts (103), and in which an outward flange (106) including parts (106a) along the ridge line parts (102) is formed at an end part in a longitudinal direction, forming of parts to be formed to the ridge line parts (102) is started by creating a state where a region (300a) positioned at least at an end portion in a longitudinal direction of a part to be formed to the groove bottom part (101) of the blank (300) is separated from a punch top part (201b), and at that time or thereafter, the region (300a) is made to approach the punch top part (201b). Accordingly, when the forming of the ridge line parts (102), and in accordance with that, the forming of the parts (106a) of the outward flange (106) are conducted, the parts are formed relatively moderately from the start to the middle of the press forming, to thereby reduce or prevent an occurrence of stretch flange fracture and a generation of wrinkling.

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