Title:
METHOD FOR MANUFACTURING WASHERS AND WASHER
Document Type and Number:
WIPO Patent Application WO/2016/203852
Kind Code:
A1
Abstract:
Provided is a method for manufacturing washers, which can manufacture the washers with an improved material yield.
A method for manufacturing washers comprises: a preparation step for preparing long members (N1) each provided with an upper wave-shaped section (20) and a lower wave-shaped section (30), the upper and lower wave-shaped sections (20, 30) having crests (21, 31) which are formed on the upper surface and/or the lower surface of the long member (N1), and having troughs (22, 32) continuous with the crests (21, 31) in the left-right direction; and a deformation step for deforming the long member (N1) so that the upper surface and the lower surface will have a circular arc shape in a front view.
Inventors:
OCHIAI HIROKAZU (JP)
Application Number:
PCT/JP2016/063066
Publication Date:
December 22, 2016
Filing Date:
April 26, 2016
Export Citation:
Assignee:
TAIHO KOGYO CO LTD (JP)
International Classes:
B21D53/20; B21D11/20; F16B43/00
Foreign References:
| JPS51141767A | 1976-12-06 | |||
| JPS4967301A | 1974-06-29 | |||
| JPH01135138U | 1989-09-14 | |||
| JPS5391063A | 1978-08-10 |
Other References:
See also references of EP 3308873A4
Attorney, Agent or Firm:
NAGATA Toyohiko et al. (JP)
Toyohiko Nagata (JP)
Toyohiko Nagata (JP)
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