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High-precision bushing assembly centering device and bushing centering assembly method

A centering device, high-precision technology, applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problem of cracking, affecting the coaxiality of the bush and the shaft seat hole, excessive extrusion of the bush and the shaft seat hole, etc. question

Active Publication Date: 2021-09-10
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This method can basically meet the assembly requirements for bush assembly with low precision requirements, but for high-precision bush assembly, the existence of the fit gap has greatly affected the coaxiality of the bush and the shaft seat hole, resulting in the bush being installed During the process, the bushing and the shaft seat hole are partially over-extruded, and even crushed, cracked, etc., the coaxiality of the shaft seat hole and the shaft seat hole cannot be guaranteed, which eventually leads to failure of the bushing assembly and damage to the corresponding parts scrapped

Method used

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  • High-precision bushing assembly centering device and bushing centering assembly method
  • High-precision bushing assembly centering device and bushing centering assembly method
  • High-precision bushing assembly centering device and bushing centering assembly method

Examples

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Embodiment 1

[0038] This embodiment discloses a high-precision bushing 10 assembly centering device, as a basic embodiment of the present invention, including a centering shaft 3, a supporting bushing 1, a bushing supporter 4 and a shaft seat hole supporter 5 ; The support shaft sleeve 1 is a hollow cylinder structure, the shaft center of the top of the support shaft sleeve 1 is provided with a fixed shaft hole 1.2.1, and the shaft center of the bottom of the support shaft sleeve 1 is fixed with a threaded fixed shaft for connecting the centering shaft 3 Nail 7; the top of the support sleeve 1 is detachably provided with a shaft cover 2 for pressing the bushing 10 (the bottom of the shaft cover 2 is provided with a rubber pad 6), and the shaft center of the shaft cover 2 is provided with a shaft hole 2.1; The mandrel 3 is set coaxially with the support sleeve 1, and one end of the centering shaft 3 passes through the shaft hole 2.1, and is inserted into the support sleeve 1 through the fixe...

Embodiment 2

[0042] This example discloses a high-precision bushing 10 assembly centering device, as a preferred embodiment of the present invention, that is, in Example 1, the support shaft sleeve 1 includes a sleeve body 1.1, an upper limit cover 1.2 and a lower limit cover 1.3; the sleeve body 1.1 is a hollow cylinder structure with both ends open, and the two ends of the sleeve body 1.1 are respectively provided with internal thread structures 1.1.1, and the upper limit cover 1.2 is detachably connected to the sleeve through the internal thread structure 1.1.1 On the top of the body 1.1, the lower limit cover 1.3 is detachably arranged on the bottom of the sleeve body 1.1 through the internal thread structure 1.1.1; the end of the support shaft sleeve 1 near the top is provided with an external thread structure II 1.1.2 for connecting the shaft cover 2, A connection basis is provided between the centering shaft 3 and the threaded shaft fixing nail 7 .

[0043] In the actual use of this...

Embodiment 3

[0045] This embodiment discloses a high-precision bushing 10 assembly centering device, as a preferred embodiment of the present invention, that is, in embodiment 1, a nail-piercing hole 1.3.1 is opened at the axis of the bottom of the support sleeve 1 , the nail body of the threaded fixed axis nail 7 is inserted into the inside of the support sleeve 1 through the nail hole 1.3.1, the top cap of the threaded fixed axis nail 7 is fixedly connected with the bottom of the support sleeve 1; the top of the centering shaft 3 is set There is a connection end 3.1 for cooperating with a wrench.

[0046]The nail-piercing hole 1.3.1 of this technical solution is used as a reference for the threaded fixed-axis nail 7 to find the central axis of the support bushing 1, and the connection between the threaded fixed-axis nail 7 and the support bushing 1 under the condition of setting the nail-piercing hole 1.3.1 structure, the supporting force at the bottom of the support sleeve 1 is used to ...

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Abstract

The invention relates to the field of bushing assembly, in particular to a high-precision bushing assembly centering device and a bushing centering assembly method. The device is a simple auxiliary tool, and comprises a centering shaft, a supporting shaft sleeve, a bushing supporting device and a shaft seat hole supporting device. The device is ingenious in structure and easy to control, and is tightly matched with a bushing and a shaft seat when used for guiding bushing assembly, so that the fit clearance is eliminated, the coaxiality between the bushing and the shaft seat is remarkably improved, and the bushing assembly quality is remarkably improved; and the use requirements of bushings and shaft seat holes with different diameters can be met by adjusting the bushing supporting device and the shaft seat hole supporting device, and the technical scheme has high universality.

Description

technical field [0001] The invention relates to the field of bush assembly, in particular to a high-precision bush assembly centering device and a bush centering assembly method. Background technique [0002] The bushing is a pad part between the shaft and the shaft seat, which can reduce the wear of the shaft and the shaft seat and improve the matching accuracy of the shaft hole. It is a high-precision assembly and is widely used in various industries. When the bushing is installed, its coaxiality with the shaft seat hole will significantly affect the assembly quality of the bushing. At present, the main method of bushing installation is as follows: use a coaxial stepped mandrel as a guide tool for bushing installation, the diameter of one end of the mandrel is slightly smaller than the diameter of the shaft seat hole by 1-2mm, and the diameter of the other end of the mandrel is slightly smaller than the diameter of the bushing. The inner diameter of the sleeve is 1-2mm, a...

Claims

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Application Information

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IPC IPC(8): B23P19/00
CPCB23P19/00
Inventor 李卫东张桂高鑫沈昕江波闫新刚秦枭品徐显斌
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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