Title:
プレス加工装置、およびプレス加工方法
Document Type and Number:
Japanese Patent JP6737374
Kind Code:
B2
Abstract:
[Solution] Provided is a press-working apparatus configured to provide a molded product by performing press working on a work, the molded product including, in a cross-section, a U-shaped portion including a bottom, a wall, and a punch-nose between the bottom and the wall, the press-working apparatus including: a die in which a recessed portion to receive the U-shaped portion is formed; a first punch that sandwiches a central area of the bottom with a bottom surface of the recessed portion; and a second punch that is pushed into the recessed portion later than the first punch, to restrain the wall between the second punch and a side surface of the recessed portion, and sandwich the work with the bottom surface to mold a peripheral area of the bottom and the punch-nose. A sandwiching width of the first punch that sandwiches the central area of the bottom and a setback amount of the second punch from the first punch in a push-in direction are set on the basis of a target sheet thickness of the punch-nose.
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Inventors:
Shinkawa Yoshikawa
Yasuhiro Ito
Shigeru Yonemura
Toru Yoshida
Yasuhiro Ito
Shigeru Yonemura
Toru Yoshida
Application Number:
JP2019074907A
Publication Date:
August 05, 2020
Filing Date:
April 10, 2019
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B21D24/00; B21D22/20
Domestic Patent References:
JP2004098153A | ||||
JP9174166A | ||||
JP2009090318A | ||||
JP2009248092A | ||||
JP9295088A | ||||
JP2010137261A | ||||
JP2001198641A | ||||
JP2007111725A | ||||
JP6218442A |
Foreign References:
WO2014185357A1 | ||||
WO2014065290A1 | ||||
US20080309834 |
Attorney, Agent or Firm:
Patents corporation Blitas