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1. EP3501684 - AUTOMOBILE-BODY PRESS-FORMED COMPONENT AND MANUFACTURING METHOD THEREFOR

Office European Patent Office
Application Number 17841332
Application Date 24.07.2017
Publication Number 3501684
Publication Date 26.06.2019
Publication Kind A4
IPC
B21D 53/88
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
53Making other particular articles
88other parts for vehicles, e.g. cowlings, mudguards
B21D 22/26
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
22Shaping without cutting, by stamping, spinning, or deep-drawing
20Deep-drawing
26for making peculiarly, e.g. irregularly, shaped articles
B62D 25/20
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
DMOTOR VEHICLES; TRAILERS
25Superstructure sub-units; Parts or details thereof not otherwise provided for
20Floors or bottom sub-units
CPC
B21D 19/08
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
19Flanging or other edge treatment, e.g. of tubes
08by single or successive action of pressing tools, e.g. vice jaws
B21D 22/21
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
22Shaping without cutting, by stamping, spinning, or deep-drawing
20Deep-drawing
21without fixing the border of the blank
B21D 51/52
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
51Making hollow objects
16characterised by the use of the objects
52boxes, cigarette cases, or the like
B21D 53/88
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
53Making other particular articles
88other parts for vehicles, e.g. cowlings, mudguards
B62D 25/20
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
DMOTOR VEHICLES; TRAILERS
25Superstructure ; or monocoque structure; sub-units; Parts or details thereof not otherwise provided for
20Floors or bottom sub-units
B21D 22/26
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
22Shaping without cutting, by stamping, spinning, or deep-drawing
20Deep-drawing
26for making peculiarly, e.g. irregularly, shaped articles
Applicants NIPPON STEEL CORP
Inventors ITO YASUHIRO
Designated States
Priority Data 2016160722 18.08.2016 JP
2017026671 24.07.2017 JP
Title
(DE) PRESSGEFORMTE KAROSSERIEKOMPONENTE UND HERSTELLUNGSVERFAHREN DAFÜR
(EN) AUTOMOBILE-BODY PRESS-FORMED COMPONENT AND MANUFACTURING METHOD THEREFOR
(FR) COMPOSANT FORMÉ À LA PRESSE DE CARROSSERIE AUTOMOBILE ET SON PROCÉDÉ DE FABRICATION
Abstract
(EN)
[Problem] To provide a member that exhibits high load resistance and rigidity when connected to another member. [Solution] A member 1 has a transverse cross- section that includes a top plate 2, top ridgelines 4, vertical walls 3, bottom ridgelines 5, and floor flanges 9. The member 1 has, at at least one end thereof in an extension direction of the top ridgelines 4, a top plate flange 11 connected via a top plate ridgeline 6 and a vertical wall flange 10 connected via a vertical wall ridgeline 7. The vertical wall flange 10 and the floor flanges 9 are continuous with each other. The relation ΣR/ΣL ≤ 0.13 holds true for the member 1, where ΣR is the sum of radii of curvature of corner portions of the vertical walls at ends of the top ridgelines 4 and the bottom ridgelines 5, and ΣL is the sum of widths of the top plate 2 and the vertical walls 3 at an end of the member. The member 1 is manufactured through a first step of manufacturing an intermediate formed article 27 that is provided with at least flange ridgelines 8 by subjecting a blank 26 to press forming and then shrinkage flange forming the flange ridgelines 8, and a second step of subjecting the intermediate formed article 27 to press forming to thereby manufacture the member 1.

(FR)
[Problème] Fournir un élément qui présente une résistance à la charge et une rigidité élevées lorsqu’il est relié à un autre élément. [Solution] Selon la présente invention, un élément 1 comporte une section transversale qui comprend une plaque supérieure 2, des lignes de crête supérieures 4, des parois verticales 3, des lignes de crête inférieures 5 et des brides de plancher 9. L’élément 1 comporte, au moins à une extrémité de celui-ci, dans une direction d’extension des lignes de crête supérieures 4, une bride de plaque supérieure 11 reliée par l’intermédiaire d’une ligne de crête de plaque supérieure 6 et une bride de paroi verticale 10 reliée par l’intermédiaire d’une ligne de crête de paroi verticale 7. La bride de paroi verticale 10 et les brides de plancher 9 sont continues les unes avec les autres. La relation ΣR/ΣL ≤ 0,13 est vraie pour l’élément 1, où ΣR est la somme des rayons de courbure des parties d’angle des parois verticales aux extrémités des lignes de crête supérieures 4 et des lignes de crête inférieures 5, et ΣL est la somme des largeurs de la plaque supérieure 2 et des parois verticales 3 à une extrémité de l’élément. L’élément 1 est fabriqué au moyen d’une première étape de fabrication d’un article formé intermédiaire 27 qui est pourvu d’au moins plusieurs lignes de crête 8 en soumettant une ébauche 26 à un formage à la presse, puis formation de bride par retrait formant les lignes de crête de bride 8, et une deuxième étape de soumission de l’article formé intermédiaire 27 à un formage à la presse de façon à fabriquer l’élément 1.