Assembly device for thin-wall part assembly self-locking nut

Abstract

The invention discloses an assembly device for a thin-wall part assembly self-locking nut. The assembly device comprises a pin assembly fixture for placing a punch and a self-locking nut, and an adjustable press; and the adjustable press comprises a connecting part for detachably connecting with the pin assembly fixture, and a control part for prepressing the self-locking nut through pressing the punch after clamping of the self-locking nut and riveting the self-locking nut through pressing the punch after prepressing. Through two-gear setting of prepressing and riveting, the assembly device effectively prevents stressed deformation of combined edges of the self-locking nut, and reduces the scrap rate of the self-locking nut and a thin-wall part; the adjustable press is adopted to improve the automation degree of installing the self-locking nut on the thin-wall part; the assembly operation is simple, convenient, fast and low in labor intensity; the once assembly pass percent can reach 100%; the rework is not needed; and the assembly efficiency and quality are greatly improved.

Description

technical field [0001] The invention relates to the technical field of mechanical processing equipment, in particular to an assembly device for assembling self-locking nuts of thin-walled parts. Background technique [0002] In the field of aero-engine manufacturing, it is usually necessary to install self-locking nuts 01 in thin-walled parts 02. In the traditional assembly process, the self-locking nut 01 is usually installed in the mounting hole of the thin-walled part 02 by manual spinning and locking using a socket wrench and a handle-type pinning tool, see figure 1 and figure 2 , The installation principle is to make the punch press the combined side of the self-locking nut 01 by manually applying torque, so that the combined side of the self-locking nut 01 becomes tapered and fits the hole wall of the installation hole. [0003] However, due to the thin wall thickness of the thin-walled part 02, the structural rigidity is poor, and it is easily deformed by external ...

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Problems solved by technology

[0003] However, due to the thin wall thickness of the thin-walled part 02, the structural rigidity is poor, and it is easily deformed by external forces. In the above installation method, the torque applied by the staff when spinning is usually uneven, and the combined edge of the self-locking nut 01 cannot be fixed at one time. Stamping forming, poor fit with the mounting hole, easy to loose, rework rate is basically above 70%, high waste rate of self-locking nut 01, low assembly efficiency, and deformation of the mounting edge of thin-walled parts 02, resulting in thin-walled parts Other dimensions of 02 have deviations, which makes thin-walled parts 02 risky to be scrapped

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