DISC SPRING MANUFACTURING METHOD, AND DISC SPRING

WIPO Patent Application WO/2022/080427

A1

This disc spring manufacturing method is a method for manufacturing a disc spring that includes a spring body (1e) which is formed in a ring shape and which comprises: an outer circumferential surface (1a) facing outward in the radial direction; an inner circumferential surface (1b) facing inward in the radial direction; an outer circumferential edge (1c) being an outer end surface in the radial direction; and an inner circumferential edge (1d) being an inner end surface in the radial direction. In a state where a support body (11) is used for supporting at least an outer end portion in the radial direction of the inner circumferential surface (1b), and where a compressive force in the axial direction along the center axis line of the spring body is applied to the spring body, the support body and the spring body are made to rotate relatively around the center axis line while being in sliding contact with each other, such that a compressive residual stress is applied to at least the outer end portion in the radial direction of the inner circumferential surface.

YAMADA YOSHIO (JP)
SAKAI HIDEAKI (JP)
TAKAHASHI SHUJI (JP)

PCT/JP2021/037943

April 21, 2022

October 13, 2021

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NHK SPRING CO LTD (JP)

F16F1/02; F16F1/32

WO2019189644A1

2019-10-03

JP2004050362A	2004-02-19
JPS5166960A	1976-06-10
JP6654261B1	2020-02-26
JP2000027915A	2000-01-25
JP2004144132A	2004-05-20
JP2005054995A	2005-03-03
JP5209904B2	2013-06-12
US5971377A	1999-10-26

TANAI Sumio et al. (JP)

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