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1. IN201917005687 - AUTOMOBILE-BODY PRESS-FORMED COMPONENT AND MANUFACTURING METHOD THEREFOR

Office India
Application Number 201917005687
Application Date 13.02.2019
Publication Number 201917005687
Publication Date 26.04.2019
Publication Kind A
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
Applicants NIPPON STEEL & SUMITOMO METAL CORPORATION
Inventors ITO, Yasuhiro
Priority Data 2016-160722 18.08.2016 JP
Title
(EN) AUTOMOBILE-BODY PRESS-FORMED COMPONENT AND MANUFACTURING METHOD THEREFOR
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.