Title:
CUTTING METHOD AND CUT ARTICLE
Document Type and Number:
WIPO Patent Application WO/2020/183882
Kind Code:
A1
Abstract:
The present invention provides a cutting method for cutting a material to be processed, using a cutting tool provided with a die and a punch, wherein the cutting method includes arranging the material to be processed between the die and the punch, relatively pressing in the punch toward the die in a state in which a wedge-shaped first blade part of the die and a wedge-shaped second blade part of the punch are facing each other, and cutting the material to be processed, the tip angle θ1 of the first blade part and the tip angle θ2 of the second blade part being 10° to 120°, and the tip radius R1 of the first blade part and the tip radius R2 of the second blade part being 0.5% to 35.0% of a plate thickness.
Inventors:
YASUTOMI TAKASHI (JP)
KOBAYASHI AKINOBU (JP)
KOBAYASHI AKINOBU (JP)
Application Number:
PCT/JP2020/000526
Publication Date:
September 17, 2020
Filing Date:
January 09, 2020
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
B21D28/02; B21D28/14; B21D28/24; B21D28/26; B21D28/34; B23D15/06; B23D35/00
Domestic Patent References:
| WO2017057466A1 | 2017-04-06 | |||
| WO2016027288A1 | 2016-02-25 |
Foreign References:
| JP2004034183A | 2004-02-05 | |||
| JP2000108077A | 2000-04-18 | |||
| JPS60232812A | 1985-11-19 | |||
| JP2004358560A | 2004-12-24 | |||
| JP2014065045A | 2014-04-17 | |||
| JP2020032437A | 2020-03-05 | |||
| JP2017087294A | 2017-05-25 | |||
| JP2018075600A | 2018-05-17 | |||
| JP2006315123A | 2006-11-24 | |||
| JPH01255117A | 1989-10-12 | |||
| JP2012101258A | 2012-05-31 | |||
| JP2008155219A | 2008-07-10 |
Other References:
OSAMU KADA: "Nippon Steel Technical Report", March 2007, NIPPON STEEL CORPORATION, article "Advanced Forming Analysis for Bar and Wire Rod with Finite Element Method", pages: 59 - 63
Attorney, Agent or Firm:
BRIGHTAS IP ATTORNEYS (JP)
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