METHOD FOR MANUFACTURING COMPONENT WITH HAT-SHAPED CROSS SECTION

Title:

METHOD FOR MANUFACTURING COMPONENT WITH HAT-SHAPED CROSS SECTION

Document Type and Number:

WIPO Patent Application WO/2016/104376

Kind Code:

A1

Abstract:

A method for manufacturing a component with a hat-shaped cross-section, said method being equipped with: a sandwiching step wherein a pair of vertical walls in an elongated preliminarily formed component that has been press-formed into a hat-shaped cross section are arranged on the outside of a punch in the width direction, and a top plate of the preliminarily formed component is sandwiched between and held by a punch and a pad; a bending and stretching step wherein, after the sandwiching step, a die provided on both sides of the pad in the width direction is moved toward the punch, relative to the preliminarily formed component, and the vertical walls on one side in the lengthwise direction of the preliminarily formed component are bent and stretched by the die away from the top plate; and a bend-back step wherein, after the sandwiching step, holders provided on both sides of the punch in the width direction are moved toward the pad, relative to the preliminarily formed component, and the vertical walls on the other side in the lengthwise direction of the preliminarily formed component are bent back toward the top plate by the holders.

Inventors:

ASO TOSHIMITSU (JP)
TANAKA YASUHARU (JP)
MIYAGI TAKASHI (JP)
OGAWA MISAO (JP)
YAMAMOTO SHINOBU (JP)

Application Number:

PCT/JP2015/085553

Publication Date:

June 30, 2016

Filing Date:

December 18, 2015

Export Citation:

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Assignee:

NIPPON STEEL & SUMITOMO METAL CORP (JP)

International Classes:

B21D22/26; B21D22/20; B21D22/30; B21D24/00

Domestic Patent References:

WO2014106931A1	2014-07-10
WO2015098871A1	2015-07-02

Foreign References:

JP2011025263A

2011-02-10

Other References: