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Inner cavity centering adjustment method and adjustment tool thereof

A technology of centering adjustment and inner cavity, applied in the direction of manufacturing tools, metal processing, metal processing equipment, etc., can solve the problems of undetectable, scrapped products, difficult operation, etc., to ensure the symmetry index, avoid hole wall scratches, Rotating flexible effects

Inactive Publication Date: 2012-02-22
FLIGHT AUTOMATIC CONTROL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the axial adjustment of the valve sleeve in the hole is not flexible. At present, the symmetry index is ensured by adjusting the depth of the press-fit. Defects such as damage, deformation, or even product scrapping

Method used

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  • Inner cavity centering adjustment method and adjustment tool thereof
  • Inner cavity centering adjustment method and adjustment tool thereof
  • Inner cavity centering adjustment method and adjustment tool thereof

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Embodiment Construction

[0027] In order to better illustrate the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] Please refer to the attached Figure 4 ~ Figure 5 . An inner cavity centering adjustment tool, including a knob 1, a positioning shaft 2 and an eccentric block 3, the eccentric block 3 is rotatably installed in the inner hole of the positioning shaft 2, one end of which is fixedly connected with the knob 1, and the other end protrudes from the positioning shaft 2, the eccentric block 3 protruding out of the positioning shaft 2 is an asymmetrical rotator with only one maximum radius, and the gap between the maximum radius b and the narrow side of the waist hole 4 of the valve sleeve is a symmetry tolerance requirement 1 / 3~1 / 5 of Figure 4 , Figure 5 shown.

[0029] In order to make the alignment adjustment have higher precision, further, such as Image 6 As shown, the gap between...

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Abstract

The invention relates to an inner cavity centering adjustment tool which comprises a knob (1), a positioning shaft (2) and an eccentric block (3), wherein the eccentric block (3) is rotatably mounted in an inner hole of the positioning shaft (2); one end of the eccentric block (3) is fixedly connected with the knob (1), and the other end of the eccentric block (3) extends out of the positioning shaft (2); and the eccentric block (3) extending out of the positioning shaft (2) is an asymmetric revolution body which only has one maximum-radius part, wherein the clearance between the maximum radius b and the narrow side of a valve bush waist-shaped hole (4) is 1 / 3-1 / 5 of the required symmetry tolerance. In the invention, the centering requirement of two inner cavity structures is converted into the requirement of clearance between two centering structures of a special tool. By rotating the special tool and adjusting the axial position of the pressed part, the clearance of the special tool in the inner cavity structure is uniform, and the rotation is flexible so as to ensure the symmetry index. Through the invention, the problems of hole wall scratching, part deformation, friction increase and the like caused by repeated trial assembly are avoided, the centering accuracy is ensured, and the operation is simple and easy.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a high-precision part assembly method and a tool. Background technique [0002] In the assembly of a high-precision hydraulic part, a valve sleeve needs to be press-fitted into the inner hole of the housing. figure 1 , 2 As shown, the valve sleeve is an interference fit with the inner hole of the housing. After press-fitting, it is required that the upper waist hole 4 of the valve sleeve is symmetrical to the center of the centering pin hole 5 on the shell, as shown in the attached manual. image 3 shown. [0003] Since the valve sleeve is in the inner cavity of the housing, after pressing, the waist hole 4 is completely invisible. At the same time, the axial adjustment of the valve sleeve in the hole is not flexible. At present, the symmetry index is ensured by adjusting the depth of the press-fit. Damage, deformation and other defects, and even ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P19/10B23P19/02
Inventor 李国昌
Owner FLIGHT AUTOMATIC CONTROL RES INST
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