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Spring manufacturing method and spring

A manufacturing method and spring load technology, which is applied in the manufacture of springs and in the field of springs, can solve problems such as difficulty in confirming stress distribution

Pending Publication Date: 2020-12-15
MITSUBISHI STEEL MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Springs are designed using the finite element method in such a way that the distribution of stress due to the shape becomes optimal when the load is set, but it is difficult to confirm the stress distribution of the actual product when the load is loaded.

Method used

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  • Spring manufacturing method and spring
  • Spring manufacturing method and spring
  • Spring manufacturing method and spring

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Embodiment Construction

[0024] Hereinafter, the method of manufacturing the spring and the spring according to the present embodiment will be described in detail with reference to the drawings. In this embodiment, as a spring, it is assumed that a material manufactured by thermal processing has a diameter (d) of 13 mm, an average coil diameter (D) of 112 mm, a free height (H) of 326 mm, an effective number of turns (Ne) of 4.1, and a total number of turns ( Nt) 5.5, the coil spring of material SUP12, but not limited to this, can also be applied to other coil springs, not limited to coil springs, can also be applied to other types of springs, and can also be applied to cold processing methods.

[0025] figure 1 It is a flow chart showing a series of steps of the spring manufacturing method of this embodiment. In this embodiment, the bar is heated in step S11, the bar is formed into a coiled spring in step S12, the spring is quenched in step S13, tempered in step S14, and then tempered in step S15. C...

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Abstract

Provided is a spring manufacturing method wherein the stress distribution of the spring when a load is applied is confirmed. This manufacturing method for a spring (1) includes a step for applying a load to the spring (1), a step for measuring the stress on the spring to which the load has been applied, and a step for releasing the load applied to the spring (1). The measurement of the stress on the spring (1) may include a step in which stress on the surface of the effective section of the spring (1) is measured using X-ray diffraction by a cos[alpha] method and a determination is made regarding whether the magnitude of the measured stress on the spring (1) satisfies a standard.

Description

technical field [0001] The present invention relates to a method for manufacturing springs such as coil springs and the springs. Background technique [0002] Conventionally, in springs used in automotive parts such as coil springs, from the viewpoint of weight reduction, products in which stress does not concentrate on a part of the spring during use with a load are required. The design of the spring is carried out in such a way that the distribution of the stress due to the shape becomes optimal under the load by the finite element method, but it is difficult to confirm the stress distribution of the actual product under the load. Actually, the stress of the spring needs to be evaluated in consideration of both the stress due to the shape of the spring and the residual stress imparted by shot peening. [0003] In the current state, the stress caused by the shape of the spring is measured on the outer shape of the spring, and the simulation by the analysis of the finite el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F1/02F16F1/14F16F1/18F16F1/32G01L1/00G01L1/25
CPCF16F1/02F16F1/32F16F1/18F16F1/06F16F2226/04F16F2226/02G01L1/042F16F1/14G01L5/0038G01L1/25F16F2230/0047G01N2223/607G01N23/20F16F2226/00B21F35/00F16F1/04
Inventor 山崎智裕木野文寻福田好纯曾田裕二
Owner MITSUBISHI STEEL MFG CO LTD
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