PRESS-MOLDING METHOD AND METHOD FOR PRODUCING PRESS-MOLDED COMPONENT

Title:

PRESS-MOLDING METHOD AND METHOD FOR PRODUCING PRESS-MOLDED COMPONENT

Document Type and Number:

WIPO Patent Application WO/2016/031159

Kind Code:

A1

Abstract:

　Provided is a method for manufacturing a curved channel component having a curve in a vertical wall part thereof by press-molding, wherein the method makes it possible to minimize shrink flange deformation, which occurs in the vertical wall part and a flange part. This method has a shear deformation step as a step for forming the vertical wall part. In the shear deformation step, a boundary portion (11a) between a base part (11) and a deformed part (12) of a blank (1), and an external portion (12b) of the deformed part (12), are separately restrained, a portion (12a) serving as a vertical wall part of the deformed part (12) is shear-deformed along the plate surface thereof, and a material is caused to flow from a curved portion to a portion separated from the curved portion (material is caused to move within the blank) in an outer edge part of the portion (12a) serving as the vertical wall part.

More Like This:

JPS5823519	DRAWING PRESS DIE
JPS5897429	PRESS DIE FOR DRAWING

Inventors:

FUJII YUSUKE (JP)
SHINMIYA TOYOHISA (JP)
KISHIGAMI YASUHIRO (JP)
IIZUKA EIJI (JP)
YAMASAKI YUJI (JP)

Application Number:

PCT/JP2015/004015

Publication Date:

March 03, 2016

Filing Date:

August 10, 2015

Export Citation:

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Assignee:

JFE STEEL CORP (JP)

International Classes:

B21D22/22; B21D22/26

Domestic Patent References:

WO1999037417A1	1999-07-29
WO2015008495A1	2015-01-22

Foreign References:

JP2008055511A	2008-03-13
JP2001314918A	2001-11-13
JP2006320941A	2006-11-30
JPH0739954A	1995-02-10
JPH11123469A	1999-05-11