Composite material wallboard shape preserving tool and method

Abstract

According to the shape preserving tool and method for the composite material wall plate, product performance and installation posture analysis is conducted on the composite material wall plate, and the curvature change degree of the composite material wall plate in the installation posture when the composite material wall plate is influenced by the self-gravity is obtained; the shape-preserving tool comprises a rigid supporting frame, supporting beams and supporting suction cups, the rigid supporting frame is of an enclosure frame structure, the multiple supporting beams are movably connected to the rigid supporting frame, the supporting suction cups are movably connected to the rigid supporting frame, and the supporting suction cups are movably connected to the rigid supporting frame. A plurality of supporting suction cups are connected to each supporting beam, the connecting positions and the connecting heights of the supporting suction cups on the supporting beams are adjustable, each supporting suction cup is communicated with a negative pressure pipeline, and the supporting suction cups form dot-matrix type composite material wall plate shape-preserving fixing points. And a shape-preserving surface formed by the adsorption points of the dot-matrix type supporting suction cups is consistent with the shape-preserving curvature of the installation posture of the composite material wallboard.

Description

technical field [0001] The invention relates to the technical field of equipment design for aircraft composite material component assembly, in particular to a shape-preserving tooling and a shape-preserving method for a composite material wall plate. Background technique [0002] At present, the proportion of composite materials used in various types of aircraft at home and abroad is increasing, and it is changing to the main load-bearing parts. Composite materials account for 50% of the total structural weight of the foreign Boeing 787 model, and 52% of the Airbus A350's composite materials. Its composite wing is about 32 meters long and 6 meters wide. carbon fiber composite parts. [0003] Since large-scale composite components are prone to springback deformation after forming, and are subjected to multiple loads such as forming residual stress, gravity, clamping force, hole-making force, and connection force under the installed posture, composite materials are more compl...

AI Technical Summary

Problems solved by technology

[0003] Since large-scale composite components are prone to springback deformation after forming, and are subjected to multiple loads such as forming residual stress, gravity, clamping force, hole-making force, and connection force under the installed posture, composite materials are more complex than metal parts. The process and assembly process of components are greatly deformed, and it is difficult to effectively eliminate

The existing shape-preserving tooling is basically a lift-type support for the wall in a horizontal state. The support surface formed by the support points is consistent with the curvature of the wall. The support shape of the prior art cannot meet the requirements of composite wall panels. shape-preserving

In the prior art, only the lifting force is generated on the composite wall panel during the shape-keeping process, and the tensile force is generally generated by its gravity, which causes the stress of the composite material wall panel to change after the attitude adjustment during the installation process, which seriously affects the shape-keeping effect

Moreover, the existing composite wall panel shape-preserving tooling adopts one type of wall panel and one tooling form, resulting in a limited application range of the existing composite material wall panel shape-keeping tooling and high cost of shape preservation

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