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Machining method of spherical fit pair based on product performance

A processing method and technology of matching pairs, which are applied in the processing field of spherical matching pairs, can solve the problem of not being able to well guarantee the actual coupling quality of spherical matching pairs, and achieve the effect of saving running-in steps.

Inactive Publication Date: 2021-04-20
XIAN AERO ENGINE CONTROLS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the traditional processing method adopted cannot well guarantee the actual coupling quality of the spherical mating pair, the present invention provides a processing method for a precision small spherical mating pair based on product performance

Method used

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  • Machining method of spherical fit pair based on product performance
  • Machining method of spherical fit pair based on product performance
  • Machining method of spherical fit pair based on product performance

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Experimental program
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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] This embodiment takes a three-piece set in a certain regulator as an example for illustration:

[0027] Such as image 3 As shown, the thimble spherical surface of the three-piece set of the regulator in this embodiment is SR3, the contour of the mating surface is 0.005, the roughness is Ra0.1, and there is an oil groove on the spherical surface, and the fitting rate of the spherical mating pair is required to be not less than 75%. The spherical surface of this structure has high dimensional accuracy, difficult processing, and difficult product performance debugging (see assembly in components, work see figure 1 ) The rework rate reaches more than 75% frequently, which seriously affects the production and delivery tasks.

[0028] Use the processing method provided by the invention to process:

[0029] 1. Car spherical surface: ensure ...

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Abstract

The invention relates to a machining method of a spherical fit pair based on product performance. In order to solve the problem that an adopted traditional machining method cannot well guarantee the actual coupling quality of the spherical fit pair, the method mainly comprises the steps that a spherical surface is turned, and the spherical diameter difference is guaranteed; the spherical surface is ground; coloring is conducted, and the fitting degree of the spherical surface is checked; and a ball head and a ball socket are honed and ground. According to the machining method, the technological method and technological process of the precise spherical fit pair are studied from the product performance debugging requirement while the size and all elements of the spherical fit pair are guaranteed, the purpose that a precise core part is qualified and easy to use is achieved, and meanwhile methodology and factual basis are provided for machining of parts of the fit pair of the same structure.

Description

technical field [0001] The invention relates to a processing method of a spherical fitting pair based on product performance. Background technique [0002] The structure of precision spherical fittings is widely used in the core functional parts of aviation fuel regulators and plunger pumps. Based on the characteristics of high precision and long service life of aviation products, the requirements for spherical size tolerance, shape tolerance and roughness of precision spherical fittings used in such products are generally very high. Makes processing very difficult. [0003] The traditional processing methods currently used can guarantee the size elements of the parts of the spherical mating pair, but the actual coupling quality of the spherical mating pair is not necessarily well guaranteed. Contents of the invention [0004] In order to solve the problem that the traditional processing method adopted cannot well guarantee the actual coupling quality of the spherical ma...

Claims

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Application Information

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IPC IPC(8): B23P15/00
Inventor 任燕飞俞广胜戴彦辰潘高升李雪英赵文强陈磊
Owner XIAN AERO ENGINE CONTROLS
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