PRESS COMPONENT AND METHOD AND DEVICE FOR MANUFACTURING SAME

WIPO Patent Application WO/2014/106932

A1

Provided is a technique for manufacturing, using a metal plate having a tensile strength of 500 to 1800 MPa as a raw material, a press component that has a hat-shaped cross-section and that is curved in an L-shape in the longitudinal direction, without causing creasing or cracking to occur and at a high yield. The top plate of the metal material is pressed against a punch (72) and clamped by a pad (74); the portion corresponding to the outside of the L-shaped curve is pressed against a die (71) and clamped by a blank holder (73); a bending tool (75) is moved; a vertical wall portion on the inside of the L-shaped curve of the raw material metal plate, and a flange part connecting to the vertical wall on the inside of the L-shaped curve are shaped; the raw material metal plate is moved in the direction in which the blank holder (73) is positioned while the state in which the raw material metal plate is pressed against the die (71) and clamped by the blank holder (73) is maintained; and a vertical wall portion on the outside of the L-shaped curve of the L-shaped, hat-shaped cross-section, and a flange part connecting to the vertical wall on the outside of the L-shaped curve are shaped.

TANAKA YASUHARU (JP)
ASO TOSHIMITSU (JP)
MIYAGI TAKASHI (JP)
OGAWA MISAO (JP)
KAWANO KAZUYUKI (JP)
OOOKA KAZUNORI (JP)
YAMAMOTO SHINOBU (JP)

PCT/JP2013/084299

July 10, 2014

December 20, 2013

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NIPPON STEEL & SUMITOMO METAL CORP (JP)

B21D22/26; B21D22/20; B21D22/22; B21D24/04

WO2011145679A1	2011-11-24
WO2012070623A1	2012-05-31

JP2010115674A	2010-05-27
JPS60103518U	1985-07-15
JP2006015404A	2006-01-19
JP2006015404A	2006-01-19

See also references of EP 2942123A1

ICHIHARA MASAKI (JP)
Masaki Ichihara (JP)

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