Aluminum alloy skin digital assembly method

Abstract

The invention relates to an aluminum alloy skin digital assembly method, and belongs to the field of aircraft manufacturing. In the prior art, when skin is assembled, the position is adjusted by workers according to experience, so that assembly accuracy is low; when the position of skin is not accurate, the skin and a framework will be staggered in shape, moreover, because of the shape error of the skin, riveting deformation is big, and the appearance of an aircraft body is poor; the quality of butt joints of the skin is poor; manual lineation is big in error and low in repeat accuracy and efficiency; when no tools are provided, allowance is polished manually on the site of riveting, the efficiency is low, the quality is poor, and the noise is high. According to the aluminum alloy skin digital assembly method, the digital technological lug positioning technology is adopted, skin can be clamped in place at a time, and repeated adjustment is not needed; besides technological lugs, the edges of the skin are net edges, and on-site allowance polishing is not needed; the assembly efficiency and the assembly quality can be greatly improved.

Description

technical field [0001] The invention belongs to the field of aircraft manufacturing, and in particular relates to a digital assembly method of an aluminum alloy skin. Background technique [0002] Before the use of digital manufacturing technology, the aluminum alloy skin did not have positioning holes for process lugs; a certain width margin was reserved outside the edge of the skin; at the riveting assembly site, the aluminum skin was not positioned accurately on the assembly tooling, and workers adjusted the mask based on experience. After confirming the adjusted position, fasten the skin and the fuselage frame with clamps, tensioning ropes, and clamps, drill rivet holes, and insert spring pins for positioning; manually draw the edge line, and determine the remainder to be removed. Measure, then remove the skin, and manually polish off the skin margin on site. [0003] If the skin is not positioned accurately, adjust the position according to the experience of the worker...

AI Technical Summary

Problems solved by technology

[0003] If the skin is not positioned accurately, adjust the position according to the experience of the workers, and the assembly accuracy will be low; if the skin position is not accurate, it will cause the shape of the skin and the shape of the skeleton to be misaligned, and the shape error of the skin itself will cause large riveting deformation and the appearance of the fuselage The quality is poor; the quality of the skin butt joint is poor; the manual marking error is large, the repeatability is low, and the efficiency is low; in the absence of tooling, the riveting site manually grinds the allowance, the efficiency is low, the quality is poor, and the noise is large

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