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公开(公告)号：US20230100272A1
公开(公告)日：2023-03-30
申请号：US17802475
申请日：2021-02-26
Applicant: NIPPON STEEL CORPORATION
Inventor： Kenichiro OTSUKA , Toru YONEBAYASHI , Satoshi SHIRAKAMI , Yasunori SAWA , Masafumi AZUMA , Ryuichi NISHIMURA
Abstract: A stiffened panel structure includes a panel-shaped component and a wire. The panel-shaped component has a panel body that curves in such a manner as to be convex outward. The wire has a first end portion and a second end portion. The first end portion is bonded to a first point on the inner surface of the panel body. The second end portion is bonded to a second point on the inner surface of the panel body. The wire is strained between the first point and the second point.
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2.发明申请公开(公告)号：US20230057735A1
公开(公告)日：2023-02-23
申请号：US17784295
申请日：2020-12-17
Applicant: NIPPON STEEL CORPORATION
Inventor： Soma SONOBE , Satoshi SHIRAKAMI , Takashi ARIGA
IPC: B21D22/26
Abstract: A manufacturing method of a press forming product, includes: constraining a first face of an intermediate formed product, the intermediate formed product including the first face, a raised face, and a first ridgeline located between the first face and the raised face, and performing flange forming of press forming the raised face into a second face, a flange, and a second ridgeline located between the second face and the flange, wherein: the first ridgeline extends while being convexly curved in a direction from the raised face toward the first face, and the second ridgeline extends while being convexly curved in a direction from the flange toward the second face, viewed from a press direction of the press forming; a convex direction of the first ridgeline in a cross section along the press direction intersecting with the first ridgeline and a convex direction of the second ridgeline in a cross section along the press direction intersecting with the second ridgeline are on the same side; a curvature radius, on a straight line orthogonal to the second ridgeline, in an extending direction of the first ridgeline at an intersection with the straight line in the intermediate formed product is larger than a curvature radius in an extending direction of the second ridgeline on the straight line after the flange forming step; and an angle formed by the second face at a position corresponding to the first ridgeline after the flange forming step is larger than an angle formed by the raised face and the first face which are adjacent to the first ridgeline in the intermediate formed product.
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Patent Agency Ranking
3.发明申请公开(公告)号：US20220280992A1
公开(公告)日：2022-09-08
申请号：US17632502
申请日：2020-08-05
Applicant: NIPPON STEEL CORPORATION
Inventor： Atsushi ONO , Yoshiaki NAKAZAWA , Satoshi SHIRAKAMI
Abstract: A method of manufacturing a press-formed article includes first press forming and second press forming. In the first press forming, an intermediate formed article is formed from a metal sheet by subjecting the metal sheet to processing including performing draw-forming on the metal sheet to form a peripheral wall portion, bending the metal sheet to form a convex flange portion, and bending the metal sheet to form at least a side standing flange main body portion of a side standing flange portion and a floor flange main body portion of a floor flange portion. The second press forming includes bending the intermediate formed article to form the convex flange portion to an inclined flange portion.
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公开(公告)号：US20190337259A1
公开(公告)日：2019-11-07
申请号：US16470947
申请日：2017-12-12
Applicant: NIPPON STEEL CORPORATION
Inventor： Satoshi SHIRAKAMI , Yoshiaki NAKAZAWA , Nobutaka SHIMIZU
Abstract: An exterior panel includes: a metal sheet having a curved portion; a resin structure which includes a plurality of tubular bodies having the same length in a central axis direction, top surfaces covering respective one end portions of the tubular bodies, and base portions connecting respective the other end portions of the tubular bodies and is formed with the top surfaces being brought into close contact with and joined to the curved portion of the metal sheet; and a sheet member made of a resin or paper joined to the base portions of the resin structure, in which a relationship between a tensile elastic modulus E (N/mm2) and the thickness t (mm) of the sheet member satisfies Formula (1). 4.0 (N·mm)
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公开(公告)号：US20220331855A1
公开(公告)日：2022-10-20
申请号：US17762806
申请日：2020-09-25
Applicant: NIPPON STEEL CORPORATION
Inventor： Satoshi SHIRAKAMI , Yasuharu TANAKA , Koichi SATO , Shigeru YONEMURA , Tohru YOSHIDA
Abstract: This structural member (W1) is manufactured using a structural member manufacturing device including: a first clamping part (10) having a first lower clamping member (11) and a second upper clamping member (12) disposed to face each other and capable of being opened and closed; a second clamping part (20) having a third lower clamping member (21) and a fourth upper clamping member (22) disposed to face each other corresponding to the first lower clamping member (11) and the second upper clamping member (12) and capable of being opened and closed; and clamping part driving means for allowing the first clamping part (10) and the second clamping part (20) to be relatively separated from each other while causing a position in an X-axis direction and a position in a Z-axis direction to correspond to each other. That is, the structural member (W1) is manufactured by a structural member manufacturing method in which the first clamping part (10) and the second clamping part (20) are relatively separated from each other by the clamping part driving means.
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公开(公告)号：US20240238861A1
公开(公告)日：2024-07-18
申请号：US18618627
申请日：2024-03-27
Applicant: NIPPON STEEL CORPORATION
Inventor： Atsushi ONO , Yoshiaki NAKAZAWA , Satoshi SHIRAKAMI
Abstract: A press-formed article that includes a top sheet portion, a peripheral wall portion formed along three peripheral edge portions of the top sheet portion, a floor flange portion, a side standing flange portion extending outward from a circumferential end portion of the peripheral wall portion, and an inclined flange portion that is an inclined wall continuous between the side standing flange portion and the floor flange portion.
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公开(公告)号：US20210220896A1
公开(公告)日：2021-07-22
申请号：US17053948
申请日：2019-05-07
Applicant: NIPPON STEEL CORPORATION
Inventor： Satoshi SHIRAKAMI , Yoshiaki NAKAZAWA
Abstract: According to the present disclosure, a manufacturing method for a saddle-shaped press-molded article includes curling a blank at a top plate configuration location of the blank that will form a top plate portion, applying the curl with a first force acting from an inner face side toward an outer face side of the blank at the top plate configuration location, applying the curl with a net force configured by second forces acting in mutually facing directions and a third force acting in the opposing direction to the first force at the outer face side of respective vertical wall configuration locations of the blank that will be molded into vertical wall portions, and in a state in which the top plate configuration location is curled, restraining end portion inverted ridge configuration location that will be molded into end portion inverted ridge portion, the top plate configuration location, the vertical wall configuration locations, and end portion flange configuration location that will be molded into end portion flange.
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