Title:
DISC SPRING AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2013/011737
Kind Code:
A1
Abstract:
Provided are a disc spring, which is of course designed to have increased inside diameter precision but also in which residual stress can be imparted on the edge of the inside diameter part of the tension face, and a production method therefor. After forming a beveled part (121A) on the edge of the inside diameter part (112A) of the tension face (114A) of a blank (100A), shot peening is performed on at least the tension face (114A). Residual stress can be imparted to the beveled part (121A) of the edge of the inside diameter part (112A) of the tension face (114A). After the shot peening, the inside diameter part (112A) is machined. Because it is possible in this case to leave at least the outside diameter side of the beveled part (121A), the remainder of the beveled part (121A) can configure the post-machining edge of the inside diameter part (112A) of the tension face (114A). Consequently, the edge of the inside diameter part (112) of the tension face (114) where the maximum stress in the disc spring (100) may be generated can have residual stress.
Inventors:
HARADA TAKAFUMI (JP)
Application Number:
PCT/JP2012/063282
Publication Date:
January 24, 2013
Filing Date:
May 24, 2012
Export Citation:
Assignee:
NHK SPRING CO LTD (JP)
HARADA TAKAFUMI (JP)
HARADA TAKAFUMI (JP)
International Classes:
F16F1/32; B24C1/10; F16F1/02
Foreign References:
| JP2000027915A | 2000-01-25 | |||
| JPS5141054U | 1976-03-26 | |||
| JPS5534567U | 1980-03-05 | |||
| JPH11351297A | 1999-12-24 | |||
| JP4250645B2 | 2009-04-08 |
Other References:
See also references of EP 2735755A4
Attorney, Agent or Firm:
SUENARI, Mikio (JP)
End 成 Mikio (JP)
End 成 Mikio (JP)
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Claims: