Prestress laser bending forming method for aluminum alloy high-ribbed wallboard

Abstract

The invention provides a prestress laser bending forming method for an aluminum alloy high-ribbed wallboard. The prestress laser bending forming method comprises the steps that S1, a plurality of to-be-formed areas are divided on the breadth of the aluminum alloy high-ribbed wallboard; S2, any to-be-formed area is selected to be subjected to pre-bending loading, so that the to-be-formed area enters slight plasticity; S3, a laser beam is used for scanning ribs with concentrated elastic stress in the to-be-formed area; S4, after the aluminum alloy high-ribbed wallboard is cooled to the room temperature, unloading is conducted, and forming of the to-be-formed area subjected to pre-bending loading is completed; and S5, the step S2, the step S3 and the step S4 are repeated in sequence for the rest to-be-formed areas, and an aluminum alloy high-ribbed wallboard bending forming piece is obtained. The pre-bending loading is carried out on the to-be-formed areas, so that the to-be-formed areas enter slight plasticity, and then the laser beam is used for scanning the rib parts with concentrated elastic stress, so that the bending forming of the aluminum alloy high-ribbed wallboard is realized, the overload damage and damage of the high-ribbed wallboard are avoided, and the forming precision of the high-ribbed wallboard is improved.

Description

technical field [0001] The invention relates to the technical field of metal plastic forming, in particular to a prestressed laser bending forming method of an aluminum alloy high-strength wall plate. Background technique [0002] Aluminum alloy siding is the main load-bearing component widely used on large aircraft such as launch vehicles, space stations, military aircraft, and civil aircraft. It is also an important part of the aerodynamic shape of the aircraft. It contains structural elements such as skins, ribs, and bosses . [0003] In recent years, in order to meet the needs of the improvement of the carrying capacity of aircraft and the development of lightweight structures, the design height of the ribs of aluminum alloy panels has been increasing, and the aluminum alloy high-rib panel with a rib height of more than 30mm has been more and more used. Aluminum alloy high-strength wall panels are usually formed by roll bending or press bending. The following problems o...

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Problems solved by technology

[0005] The inventor believes that the laser-induced flexible forming system and method in the prior art rely on the thermal stress induced by laser heating to bend the wall plate, the forming ability is limited, and it is difficult to bend the aluminum alloy high-strength wall plate with large deformation resistance, which needs to be improved place

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