Assembly and inspection method of dual-curvature skin type part

Abstract

The invention relates to an assembly and inspection method of a dual-curvature skin type part. The method comprises the following steps of (1) additionally arranging a plurality of process tabs at the outer edge of a skin; (2) drilling a through hole in each process tab; (3) arranging a process tab positioning device on a dual-curvature skin tooling; (4) putting the dual-curvature skin on the dual-curvature skin tooling; (5) after the positioning of the dual-curvature skin is completed, assembling; (6) after the assembling is completed, measuring a gap by a plug gauge; (7) after the gap meets the technical requirements, reverting the existing scale of an outer edge clamping plate assembly on the dual-curvature skin; (8) manufacturing an inspection sample plate; (9) aligning the skin scale of the dual-curvature skin with the detection scale of the inspection sample plate, and recording the gap value, to complete the inspection. The method has the advantages that the multi-point process tabs are adopted for positioning, assembly and inspection, so the assembly accuracy of the dual-curvature skin parts is improved, the operation is simple, the inspection is convenient and visual, and the working efficiency is improved.

Description

technical field [0001] The invention relates to an assembly and inspection method of hyperbolic skin parts, which is used for the assembly of relatively large hyperbolic aircraft skin parts and belongs to the field of assembly. Background technique [0002] With the continuous development of aviation manufacturing technology, the requirements for aircraft aerodynamic shape and stealth performance have been continuously improved, and the hyperbolic skin structure has become a load-bearing component widely used in modern aircraft design and manufacturing. The use of a hyperbolic skin structure can not only improve the aerodynamic performance and stealth performance of the aircraft, but its hyperbolic structure has the characteristics of relatively smooth surface, good air tightness, high strength-to-weight ratio, and good manufacturability, and is widely used in aerospace and other fields. Especially important parts with aerodynamic shape requirements such as the front fusela...

AI Technical Summary

Problems solved by technology

At present, after the double-curvature skin parts, especially the large-scale double-curvature skin parts, are bent, formed, inspected and delivered to the assembly plant on the mold tire of the parts factory, due to the lack of positioning and inspection standards, this leads to this problem. When such parts are assembled with other parts, there are often defects such as skin deformation after riveting and a large difference from the theoretical position of the aircraft, which seriously affects the aerodynamic shape and stealth. At this stage, in order to reduce skin deformation and improve assembly accuracy, by using The outer edge of the tooling is clamped, etc., so as to meet the assembly requirements

However, this method not only has inaccurate positioning, large springback after assembly of the skin, but also has a long assembly cycle and poor coordination between assembly tools; and the labor intensity of the operator is high, and it is difficult to shorten the assembly cycle, which is not conducive to the post-assembly process. test

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