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

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...

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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

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