Fixture and compensation method for avoiding extrusion and scratching of sealing rubber ring and retainer ring

Abstract

The invention discloses a fixture for avoiding extrusion and scratching of a sealing rubber ring and a retainer ring. The fixture is used for shell parts with related holes and nozzles and is characterized by comprising a compensation mandrel, wherein the outer diameter of the compensation mandrel is matched with the inner diameter of the nozzle; and the end surface of one end, stretching into thenozzle, of the compensation mandrel is an arc-shaped surface consistent with the inner surface of the shell part. The invention also discloses a compensation method for avoiding extrusion and scratching of the sealing rubber ring and the retainer ring. According to the compensation method, the compensation mandrel with the end surface set as the arc-shaped surface is used for carrying out curvedsurface compensation on related orifices of the inner surface of the shell part. According to the fixture and the compensation method for avoiding extrusion and scratching of the sealing rubber ring and the retainer ring, the compensation mandrel with the arc-shaped surface is used for carrying out curved surface compensation on the inner surface of the shell part. The compensation fixture has thesimple structure and low cost. The compensation method is simple and convenient, is easy to use, fundamentally eliminates the irregular extrusion deformation and scratching of the sealing rubber ringand the retainer ring, ensures the product quality, and reduces the failure of hydraulic systems of aircrafts.

Description

technical field [0001] The invention relates to the technical field of assembly technology, in particular to a fixture and a compensation method for avoiding extrusion scratches of sealing rubber ring retaining rings. Background technique [0002] In the aircraft hydraulic system, in order to realize hydraulic transmission and rotation functions, there are many structural forms that combine shell parts with related nozzles and shaft parts with outer ring grooves installed with rubber sealing rings and retaining rings. , the sealing function is realized through the cooperation between the inner surface of the hole of the housing and the rubber sealing ring and retaining ring in the collar groove, and the hydraulic transmission function is realized through the inner hole of the relevant nozzle of the housing and the inner hole of the shaft center. Some housing parts have multiple related nozzles for hydraulic transmission of different functions, figure 1 It is a hydraulic tra...

AI Technical Summary

Problems solved by technology

From the installation process, it can be seen that the damaged and scratched rubber rings and retaining rings have passed through nozzle 1 or nozzle 2 on the shell (the rubber ring 3 and retaining ring 4 have passed through nozzle 1 and nozzle 2) , retaining rings 2, 3 and apron 2 pass through nozzle 1), nozzle 1 and nozzle 2 on the casing have related holes with the inner surface of the casing, and there are certain sharp edges or irregular shapes in the relevant parts, resulting in Rubber rings 2, 3 and retaining rings 2, 3, 4 are squeezed or scratched during installation

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