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Auxiliary tool for quick installation of cotter pins and method for quick installation of cotter pins

A technology for installing openings and auxiliary tools. It is applied in the direction of manufacturing tools and hand-held tools. It can solve the problems of easy bending and deformation of cotter pins, reduced stress intensity of cotter pins, and poor installation accuracy, so as to preserve stress intensity and avoid Deformation and misalignment, avoiding the effect of repeated adjustments

Active Publication Date: 2021-08-03
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, after the cotter pin is inserted into the cylindrical pin, tools such as a screwdriver and a wrench are generally used to separate the two legs of the cotter pin, such as figure 1 As shown, in principle, the existing cotter pin installation method is to open the cotter pin to 60° to meet the anti-loosening requirements, but for fields with high reliability requirements such as aviation and aerospace equipment, the cotter pin needs to be rolled back. To the inner side of the workpiece (specifically refers to the nut) to improve the anti-loosening performance and reliability. In this case, the traditional manual installation method assisted by tools such as screwdrivers and wrenches has difficulty in installation and adjustment, and the cotter pin is prone to bending and deformation. The installation process The problems of long time consumption and poor accuracy of the installation process. Specifically, the position and bending angle of the cotter pin will be repeatedly adjusted during the installation process, which reduces the installation efficiency. In addition, although the cotter pin has high toughness, Each foot should be able to withstand repeated bending without breaks or cracks in the bent part. However, in the process of repeatedly adjusting the bending angle, the cotter pin will inevitably suffer certain mechanical strains, resulting in stress on the cotter pin. The strength is reduced, which further reduces the poor installation quality, so it is difficult to meet the tooling requirements. Therefore, there is an urgent need for an auxiliary tool that can quickly install cotter pins

Method used

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  • Auxiliary tool for quick installation of cotter pins and method for quick installation of cotter pins
  • Auxiliary tool for quick installation of cotter pins and method for quick installation of cotter pins
  • Auxiliary tool for quick installation of cotter pins and method for quick installation of cotter pins

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Embodiment 1

[0046] This embodiment discloses an auxiliary tool for quick installation of cotter pins. As a basic embodiment of the present invention, it includes an angle dividing device and a positioning device; the angle dividing device includes a positioning module I1 for placing a nut workpiece 5 and a positioning module for The bending module 2 for bending the cotter pin 6, the sliding body structure I1.1 is arranged on both sides of the positioning module I1, the inner wall I2.2.2 on both sides of the bending module 2 is provided with the chute I2.2.1, the sliding body structure I1 .1 Cooperate with the chute I2.2.1 to make the positioning module I1 and the bending module 2 detachable and slidingly connected; the positioning device includes the positioning module II3 for placing the nut workpiece 5 and the positioning module 4 for rewinding the cotter pin 6 , the two sides of the positioning module Ⅱ 3 are provided with a sliding body structure Ⅱ 3.1, and the inner wall Ⅱ on both sid...

Embodiment 2

[0049] This embodiment discloses an auxiliary tool for quickly installing cotter pins. As a preferred embodiment of the present invention, that is, in embodiment 1, a workpiece groove 1.2 for placing a nut workpiece 5 is provided in the positioning module I1, and a workpiece groove 1.2 One of the side openings is set, and the two sides of the opening are provided with a pressing piece protrusion 1.3 for supporting the cotter pin 6; the bending module 2 includes a lifting stress table 2.1 for cooperating with the pressing piece protrusion 1.3 to squeeze the cotter pin 6 And the outer frame base 2.2 for installing the lifting stress platform 2.1, the chute I2.2.1 is arranged on the inner wall I2.2.2 of the outer frame base 2.2; the lifting stress platform 2.1 is arranged inside the outer frame base 2.2, and the lifting The bottom of the stress table 2.1 is provided with a spring assembly 2.3, and the lifting stress table 2.1 is movably connected with the outer frame base 2.2 thro...

Embodiment 3

[0052] This embodiment discloses an auxiliary tool for quick installation of cotter pins, as a basic implementation of the present invention, that is, in embodiment 2, a push pin for fixing the lifting stress platform 2.1 is embedded on the outer frame base 2.2 Mechanism 2.4, push latch mechanism 2.4 includes pin 2.4.1, push bouncer 2.4.2 and twist cap 2.4.3, one end of pin 2.4.1 and twist cap 2.4.3 pass through push bouncer 2.4.2 Movably connected, the lifting stress table 2.1 is provided with a pin groove 2.1.1, and the other end of the pin column 2.4.1 cooperates with the pin groove 2.1.1 to prevent the lifting stress table 2.1 from falling; the spring assembly 2.3 includes a positioning column 2.3.1 , the positioning column 2.3.1 is wound with a stress spring 2.3.2; the bottom of the outer frame base 2.2 is provided with a socket 2.5, and one end of the positioning column 2.3.1 is fixedly connected with the bottom of the lifting stress platform 2.1, and the positioning colu...

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Abstract

The invention relates to the technical field of mechanical assembly, in particular to an auxiliary tool for quickly installing cotter pins, including an angle dividing device and a positioning device. The folding module, the positioning device includes the positioning module II for placing the nut workpiece and the positioning module for rewinding the cotter pin; using the positioning module I and the bending module to cooperate with the buckle break of the bending cotter pin, using the positioning module II and the positioning module The module cooperates with the edge section of the bent cotter pin to realize the anti-rolling buckle position of the cotter pin. This technical solution can simultaneously bend and buckle the two legs of the cotter pin, and can ensure that each bending of the cotter pin is formed once, avoiding repeated adjustments, the installation process is simple, the installation accuracy is high, and it can be greatly improved. Installation efficiency, and can retain the stress strength of cotter pins to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of mechanical assembly, in particular to an auxiliary tool for quickly installing a cotter pin and a method for quickly installing a cotter pin. Background technique [0002] Cotter pin is a kind of metal hardware commonly known as spring pin and safety pin. It is also a mechanical part processed from high-quality steel (good elastic steel material). It is mainly used for threaded connection and anti-loosening, that is, after the nut is tightened, Insert the cotter pin into the nut groove (buckle slot) and the tail hole of the bolt (cylindrical pin), and open the tail of the cotter pin to prevent the relative rotation between the nut and the bolt. Therefore, the cotter pin has been widely used in the field of mechanical assembly . [0003] In the prior art, after the cotter pin is inserted into the cylindrical pin, tools such as a screwdriver and a wrench are generally used to separate the two legs of the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B27/08
CPCB25B27/08
Inventor 何磊张开剑曹虎钟学敏张领伟谭与龙刘云飞王向凯
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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