Box section type fuselage assembly process based on force-position coupling

Abstract

The invention relates to a box section type fuselage assembly process based on force-position coupling, which comprises the following steps: arranging pressure sensors on lugs of wallboards, and connecting the two wallboards together through a plurality of telescopic support rods to form a temporary rigid structure; the temporary rigid structure is placed between the two tool positioners which are installed in advance; the length of the supporting rod is adjusted, the pose of the wallboard is adjusted, and the real-time detection value of the pressure sensor is monitored till the detection value of the pressure sensor is equal to the critical contact pressure; at the moment, the supporting rods are locked, so that the wallboards on the two sides are fixedly connected with the tool positioner; and after the rigid supporting bodies are installed, the supporting rods are dismantled. According to the method, large assembly stress can be prevented from being introduced in the assembly process of the box section type machine body, and therefore the service performance of an assembly body is improved.

Description

technical field [0001] The invention relates to a box-section fuselage assembly process based on force-position coupling, and belongs to the technical field of aircraft process equipment manufacturing. Background technique [0002] Aircraft assembly is an important part of aircraft manufacturing. It is an important feature of aircraft manufacturing to ensure the coordination between parts and parts, parts and tooling, tooling and tooling, and then ensure the accuracy of assembly. [0003] Usually the fuselage of the aircraft needs to be connected to the wings and the main landing gear, etc., so the requirements for the fuselage are relatively high. Because of its good rigidity and load-bearing performance, the box-section fuselage has been widely used in aircraft structures. Its typical structure consists of wall panels on both sides and rigid supports between the wall panels on both sides. The box segment, and the skin set on the surface of the box segment. The box-sectio...

AI Technical Summary

Problems solved by technology

However, due to the manufacturing error of the wallboard and rigid support body and the error introduced by the positioning tool during the positioning process, the position of the ear piece after assembly often deviates, which cannot meet the subsequent installation requirements

[0005]In order to solve the above problems, in the prior art, the rigidity of the positioning tool is continuously increased to force the lugs to be adjusted to the designed installation position, which leads to deformation of the lugs. A large stress is generated inside it. When the positioning tooling constraints are removed, the lugs will rebound, thereby introducing a large assembly stress into the entire structure and affecting the service performance of the assembly.

On the other hand, while improving the rigidity of the positioning tooling, it also caused an increase in the overall weight of the tooling, making the whole tooling extremely heavy and unable to meet the development needs of automated and intelligent assembly

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