Destressing method applied to satellite aluminum alloy riveting bearing barrel

Abstract

The invention provides a destressing method applied to a satellite aluminum alloy riveting bearing barrel. The method comprises the following steps of: 1, performing vibration preparation, namely measuring the size of the bearing barrel before vibration, supporting the bearing barrel by employing a multi-point supporting mode, fixing the bearing barrel by using a tool, selecting a position and an eccentric gear of a vibration exciter, and selecting a position of a vibration pickup, wherein the size of the bearing barrel comprises the flatness, depth of parallelism, roundness and height; 2, performing a modal test before vibration; 3, performing a vibration aging test; 4, performing a modal test after vibration; and 5, measuring an important process size, wherein the important process size comprises the upper end frame outer diameter, the lower end frame outer diameter, the upper end roundness, the upper end frame flatness and the lower end frame flatness of the bearing barrel. According to the method, the residual stress of the riveting bearing barrel can be effectively removed, so that the structural size of the aluminum alloy riveting bearing barrel is stable; and moreover, the production cycle of the satellite aluminum alloy riveting bearing barrel is greatly shortened, and the production schedule is effectively guaranteed.

Description

technical field [0001] The invention relates to a stress relief method, in particular, applying the vibration aging technology to a satellite aluminum alloy riveted load-bearing cylinder to remove residual stress, thereby improving stress distribution, improving structural stability and reliability, and specifically relates to a satellite aluminum alloy riveted bearing The stress relief method of the force cylinder. Background technique [0002] The satellite aluminum alloy riveted bearing tube structure is an important part of the satellite structure subsystem, usually composed of aluminum alloy upper and lower flanges (forged aluminum), aluminum alloy skin (duralumin), rivets (duralumin), stringers ( Duralumin) and other components. Flanges and skins, stringers and skins, connections between flanges, stringers and skins are all riveted. The skin is drawn and formed before riveting, the upper and lower flanges are machined, and the stringers are quenched and formed. Beca...

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Problems solved by technology

[0005] The present invention aims at the deficiencies of the above-mentioned prior art, applies the vibration aging technology to the riveted bearing cylinder structure of satellite aluminum alloy to remove residual stress, analyzes the stress elimination effect of the bearing cylinder after vibration aging and the effect of vibration aging on the structure and performance of the bearing cylinder Influence, determine the vibration time effect applied to the process method and process parameters of the aluminum alloy riveted load-bearing cylinder, and solve the problem of deformation of the satellite aluminum alloy riveted load-bearing cylinder due to residual stress

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