Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for strengthening installation and removal of high-interference retention bushings

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

Active Publication Date: 2021-05-25
西安聚行机电科技发展有限公司
View PDF8 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for strengthening installation and removal of high-interference retention bushings
  • A method for strengthening installation and removal of high-interference retention bushings
  • A method for strengthening installation and removal of high-interference retention bushings

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. Such as Figure 10a As shown, the specific installation process is:

[0085] The enhanced installation process for the Single Lug High Interference Retention Thru Bushing includes:

[0086] The cold extrusion installation tools selected in the installation process include: combined mandrel, pulling gun and installation nose cap.

[0087] Define the position of the prepared hole, such as Figure 9 Shown:

[0088] The distance from the right side of the hole to the nearest obstacle is: positive clearance;

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

[0090] The distance from the centerline of the hole to the upper obstacle is: upper clearance;

[0091] The distance from the hole centerline to the lower end obstacle is: lower end clearance.

[0092] The pos...

Embodiment 2

[0109] This embodiment provides a method for strengthening the installation and disassembly of a single-ear high-interference stagnation flange bush. Such as Figure 12a with 12b As shown, the specific installation and end face pressing process is as follows:

[0110] The enhanced installation process for single lug high interference retention flange bushings includes:

[0111] The cold extrusion installation tools selected in the installation process include: combined mandrel, pull gun, installation nose cap 3 and end surface pressing assembly.

[0112] 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:

[0113] The distance from the right side of the hole to the nearest obstacle is: positive clearance;

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

[0115] The distance from the centerline of the hole to the ...

Embodiment 3

[0134] 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:

[0135] The enhanced installation process for double lug high interference retention thru bushings includes:

[0136] 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.

[0137] 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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for strengthening the installation and dismounting of a high-interference retention bushing. The method includes a strengthening installation method and a disassembly method. The installation tool strengthens the bottom hole under the protection of the bushing, so as to achieve a high interference fit between the retention bushing and the bottom hole. The disassembly method is: use a disassembly tool to push out or pull out the retained bushing from the bottom hole to realize the removal of the high-interference retained bushing. The installation strengthening and disassembly method of the present invention can leave the stagnant bush in the base material to strengthen and install the hole made, effectively improve the fatigue life and corrosion resistance of the base material, and at the same time improve product stability and installation, Disassembly efficiency, and meet the maintenance needs of use and quick replacement within the whole life cycle, especially for small space and no power source operation has obvious advantages.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com