The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 14, 2023
Filed:
Apr. 08, 2020
Jfe Steel Corporation, Tokyo, JP;
Yasuhiro Kishigami, Tokyo, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
A press forming method for an automotive outer panel according to the present invention is a method for press forming a metal sheetinto an automotive outer panelhaving a character lineand panel surface portionsandby using a punch, a die, and a blank holder. The press forming method includes: a step of providing an elastic bodyprotruding toward the punchside on a die-side forming surface portionb forming the panel surface portion, and bringing the elastic bodyinto contact with the metal sheetprior to the die; and a step of press forming while crushing the elastic bodyand pressing the metal sheet, and the elastic bodyis caused to protrude from the die-side forming surface portionso that a frictional force of the crushed elastic bodyand the metal sheetis equal to or greater than an absolute value of a difference between tensions acting on both sides of a portioncorresponding to the character line