Opening closing and grinding structure for self-locking nut of aerospace vehicle

Abstract

The invention discloses an opening closing and grinding structure for a self-locking nut of an aerospace vehicle. The structure comprises a base and a stand column arranged on the base; a spacing hole which is matched with a self-locking nut is formed in the upper end surface of the stand column; the structure also comprises an annular opening closing plate arranged on the stand column in a sleeving manner; a plurality of straight holes are formed in the radial direction of the opening closing plate on a main body; after the end part of an ejecting block movably penetrates through the straight holes, the end of the ejecting block extends to the middle of the opening closing plate; and a grinding sheet which is matched with the opening closing part of the self-locking nut is arranged at the end part of the extended section of the ejecting block and the grinding sheet directly faces the upper end of the spacing hole. Aiming at the defects, the inventor develops a quick grinding and polishing device for the self-locking nut after completion of opening closing, removal of the burr or protrusion on the opening closing part of the self-locking nut is realized quickly, and besides, the follow-up treatment cost of numerous self-locking threads in the aerospace vehicle is reduced, so that the self-locking nut has good anti-vibration ability.

Description

technical field [0001] The invention relates to the field of aerospace, in particular to an aerospace self-locking nut grinding structure. Background technique [0002] For self-locking closing nuts used in aerospace and other industries, the closing is made after the nut is made according to the conventional process, and the closing part of the nut is extruded by extrusion method, so that the screw hole of the closing part is along the radial direction. Plastic deformation occurs, and the radial size of the screw hole at the closing part is smaller than the radial size of the screw connected to it, so that when the screw connected to the nut enters the deformed screw hole of the nut, it is caused by the elastic deformation of the screw hole The radial pressure makes the nut tightly connected with the screw to achieve the purpose of anti-loosening. According to the structure, size and service conditions of self-locking nuts, the closures are divided into two-point closures,...

AI Technical Summary

Problems solved by technology

[0003] And in the above two types of closing methods, there are still some burrs or protrusions at the corners of the end of the self-locking nut after the closing process is completed, which will cause some burrs or protrusions to intervene when the self-locking nut and the bolt are mated. In the matching area between the bolt and the self-locking nut, it will affect the resistance effect caused by the radial elastic deformation of the closing part of the self-locking nut, and at the same time reduce the radial extrusion force on the surface of the bolt, and finally lead to the thread pair having The anti-loosening torque of the self-locking nut is weakened, that is, the self-locking function of the self-locking nut is invalid; and in a complex and precise aerospace vehicle, the loosening of the connecting parts of its core components will lead to serious aerospace accidents

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