Title:
METHOD FOR PERFORMING SHEARING WORK ON AMORPHOUS ALLOY FOIL
Document Type and Number:
WIPO Patent Application WO/2023/145228
Kind Code:
A1
Abstract:
[Problem] To achieve a well balance between tool service life and quality maintenance, by imparting a functional shape to a cutting edge of a punch, when performing a shearing process on an amorphous alloy foil. [Solution] This shearing method involves, by using a shearing tool equipped with a punch 12 and a die 14, punching through multiple layers of amorphous alloy foils 28 with a single downward movement of the punch 12. The punch 12 is equipped with: a first edge E1 which is formed on a punch apical surface 12a; and a second edge E2 which is formed on a punch-side peripheral surface 12b. The horizontal distance l from the first edge E1 to the punch-side peripheral surface 12b and the vertical distance h from the second edge E2 to the punch apical surface 12a are each configured to fall within a range of 0.010-0.050 mm. In addition, the vertical distance h is set to be 52% or less of the sheet thickness of each of the amorphous alloy foils 28.
Inventors:
SUZUKI YOHEI (JP)
ABE KOTA (JP)
AIZAWA TATSUHIKO (JP)
SHIRATORI TOMOMI (JP)
ABE KOTA (JP)
AIZAWA TATSUHIKO (JP)
SHIRATORI TOMOMI (JP)
Application Number:
PCT/JP2022/043666
Publication Date:
August 03, 2023
Filing Date:
November 28, 2022
Export Citation:
Assignee:
KOMATSUSEIKI KOSAKUSHO CO LTD (JP)
UNIV OF TOYAMA (JP)
UNIV OF TOYAMA (JP)
International Classes:
B21D28/02; B21D28/14; B21D28/34; B21D33/00; B26F1/14; B28D1/32
Domestic Patent References:
| WO2015170707A1 | 2015-11-12 |
Foreign References:
| JP2020097047A | 2020-06-25 | |||
| JP2015193043A | 2015-11-05 | |||
| JP2020192583A | 2020-12-03 |
Attorney, Agent or Firm:
OKUDA Hiroyuki et al. (JP)
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