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Reinforcement installation and disassembling method of high interference residence bushing

An installation method and bushing technology, applied in the field of mechanical processing, can solve problems such as not easy to replace, limited operating space, and inability to strengthen the base material, etc., to achieve the effects of improving assembly quality, reducing initial damage, and long service life

Active Publication Date: 2019-12-13
西安聚行机电科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet the requirements of use, the hole made by the temperature difference method is mainly used to install the bushing protection, and the base material cannot be strengthened.
The process of assembling the bushing by the temperature difference method is complicated, it is easy to fall off and cause surface damage on the inner wall of the hole, which reduces the reliability and fatigue life of the structural parts, and is not easy to replace
In the case of complex structures, there are situations where the operating space is limited and cannot be assembled
With the improvement of requirements for reliability, fatigue life, production efficiency, etc., traditional methods can no longer meet the needs of equipment use and maintenance throughout the life cycle

Method used

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  • Reinforcement installation and disassembling method of high interference residence bushing
  • Reinforcement installation and disassembling method of high interference residence bushing
  • Reinforcement installation and disassembling method of high interference residence bushing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] This embodiment provides a method for strengthening the installation and disassembly of a single-ear high-interference stagnation straight-through bush.

[0085] Such as Figure 10a As shown, the specific installation process is:

[0086] The enhanced installation process for the Single Lug High Interference Retention Thru Bushing includes:

[0087] The cold extrusion installation tools selected in the installation process include: combined mandrel, pulling gun and installation nose cap.

[0088] Define the position of the prepared hole, such as Figure 9 Shown:

[0089] The distance from the right side of the hole to the nearest obstacle is: positive clearance;

[0090] The distance from the left side of the hole to the nearest obstacle is: back to the clearance;

[0091] The distance from the centerline of the hole to the upper obstacle is: upper clearance;

[0092] The distance from the hole centerline to the lower end obstacle is: lower end clearance.

[0093...

Embodiment 2

[0110] This embodiment provides a method for strengthening the installation and disassembly of a single-ear high-interference stagnation flange bush. Such as Figure 12a and 12b As shown, the specific installation and end face pressing process is as follows:

[0111] The enhanced installation process for single lug high interference retention flange bushings includes:

[0112] The cold extrusion installation tools selected in the installation process include: combined mandrel, pull gun, installation nose cap 3 and end surface pressing assembly.

[0113] S1. Make holes on the base material, the base material is: aluminum alloy material, and the position of the holes made is limited, such as Figure 11 Shown:

[0114] The distance from the right side of the hole to the nearest obstacle is: positive clearance;

[0115] The distance from the left side of the hole to the nearest obstacle is: back to the clearance;

[0116] The distance from the centerline of the hole to the u...

Embodiment 3

[0135] This embodiment provides a double-ear high-interference stagnation straight-through bushing strengthening installation and disassembly method. Such as Figure 15 As shown, the specific installation process is:

[0136] The enhanced installation process for double lug high interference retention thru bushings includes:

[0137] The cold extrusion installation tools selected in the installation process include: a combined mandrel, a pull gun, a nose cap 3, and a telescopic pad 4.

[0138] S1. Make two initial holes with coincident centerlines and the same diameter on the base material. The base material is made of high carbon steel, and the position of the prepared holes is limited, such as Figure 14 As shown: the position of the hole is limited by the operating space, the initial hole at the distal end of the operation is defined as the initial hole A, the installed through-through bushing 11 is defined as the bushing A, and the initial hole at the proximal end of the...

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Abstract

The present invention provides a reinforcement installation and disassembling method of a high interference residence bushing, comprising a reinforcement installation method and a disassembling method, wherein the reinforcement installation method comprises the following steps of: opening a bottom hole for installing a bushing in a metal substrate; and then selecting an installation tool to reinforce the bottom hole under the protection of the bushing, so as to realize high interference fitting between the residence bushing and the bottom hole. The dissembling method comprises the following steps of: selecting a dissembling tool to push or pull the residence bushing out of the bottom hole to realize the dissembling of the high interference residence bushing. The installation reinforcementand dissembling methods of the invention can leave the residence bushing in a base material to reinforce and install the manufactured hole, can effectively improve the fatigue life and corrosion resistance of the base material, simultaneously improve the product stability and the installation and dissembling efficiency, meet use in a whole life cycle and the maintenance requirements of quick replacement, and have obvious advantages especially for narrow space and operation without power source.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a method for strengthening, installing and dismounting a high-interference retention bush. Background technique [0002] With modern aviation, aerospace vehicles, high-speed trains, etc., the anti-fatigue performance requirements of structures with high-frequency and low-frequency vibration conditions are increasing, and the holes made of these parts are the main sources of fatigue. In order to meet the requirements of use, the temperature difference method is mainly used to install the holes made by the bushing protection, and the base material cannot be strengthened. The process of assembling the bushing by the temperature difference method is complicated, and it is easy to fall off and cause surface damage on the inner wall of the hole, which reduces the reliability and fatigue life of the structural parts, and is not easy to replace. In the case of ...

Claims

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Application Information

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IPC IPC(8): B25B27/06
CPCB25B27/064
Inventor 刘凯
Owner 西安聚行机电科技发展有限公司