An auxiliary anti-rotation method and application of a dissimilar material assembly containing micro-gap

Abstract

The invention relates to the field of dissimilar material assembly assembly, and specifically discloses an auxiliary anti-rotation method and application of dissimilar material assemblies containing micro-gap. S1. According to the mechanical properties of the assembly base part materials, select the mechanical properties with a difference of ±10%. materials, and then process the anti-rotation key; S2, process the anti-rotation key groove on the inner surface of the base part of the assembly body to match the anti-rotation key; The threaded hole matches the through hole; S4, bonding the transition layer on the inner surface of the anti-rotation key; S5, installing the anti-rotation key bonded with the transition layer into the corresponding anti-rotation key groove of the base part; S6, Apply adhesive to the inner surface of the transition layer and snap the base part already fitted with the anti-rotation key to the outer surface of the adjacent part. The invention has the advantages of enhancing the anti-rotation effect of the assembly structure with micro-gap, and improving the overall strength, rigidity and service life of the assembly structure.

Description

technical field [0001] The invention relates to the field of assembly of dissimilar material assemblies, in particular to an auxiliary anti-rotation method and application of dissimilar material assemblies containing micro-gap. Background technique [0002] In the assembly connection technology of dissimilar material assemblies with micro-gap, the traditional assembly method is usually to directly fix and connect the parts of the assembly, or to use the flexible material pretensioning technology to realize the detachable connection of the assembly parts and control the parts at the same time. relative rotation between them. Among them, although the fixed connection method is relatively firm and stable, the assembly using this connection method has the disadvantages that the parts cannot be disassembled flexibly, the mechanical properties of the connected parts are high, and the scope of application is narrow; Material pre-tightening technology mainly realizes the connection...

AI Technical Summary

Problems solved by technology

Among them, although the fixed connection method is relatively firm and stable, the assembly using this connection method has the disadvantages that the parts cannot be disassembled flexibly, the mechanical properties of the connected parts are high, and the scope of application is narrow; Material pre-tightening technology mainly realizes the connection of such dissimilar material assemblies with micro-gap by filling the tiny gap between the base part of the dissimilar material assembly and adjacent parts with a flexible medium, and at the same time produces tightness by compressing the flexible material Force anti-rotation between an assembly base part and an adjacent part

The above-mentioned flexible material pretensioning technology can meet the requirements of a certain period of use, but in the long-term use process, due to the aging effect of the intermediate flexible dielectric material, the overall stiffness and strength of this type of assembly will decrease significantly with time. When it drops to a certain level, it will cause the relative rotation of the base parts and adjacent parts of the assembly during use, which will eventually affect the performance and life of the assembly

[0003] Therefore, for the assembly process of dissimilar material assemblies with micro-gap, it is especially necessary to further enhance the anti-rotation effect of this type of assembly, but due to the excessive clearance between the base part and adjacent parts of this type of assembly At the same time, especially when the mechanical properties of the base part material and adjacent part materials in the assembly structure are very different, the ordinary keyway anti-rotation structure is no longer suitable for overcoming the loosening and rotation of this type of assembly structure. difficulty

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