Complex-curvature aluminum alloy component vacuum creep age forming method

A creep age forming and aluminum alloy component technology, which is applied to forming tools, metal processing equipment, feeding devices, etc. Labor cost, the effect of improving the pass rate

Active Publication Date: 2018-10-12
CENT SOUTH UNIV
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Problems solved by technology

[0003] However, there is no device or method for creep aging fo...

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  • Complex-curvature aluminum alloy component vacuum creep age forming method
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  • Complex-curvature aluminum alloy component vacuum creep age forming method

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Embodiment Construction

[0028] A method for creep aging forming of large complex curvature components, including using such as figure 1 The device shown mainly includes a mold surface 4, a positioning structure 6, a reinforcing structure 5, a clamping plate 1 and an auxiliary structure. The mold surface is composed of a complex curvature forming surface in the middle and platforms at both ends. The complex curvature forming surface is 15-20mm thick, which is the forming surface for the final bending and bonding of components, and the two ends of the platform are used to stick vacuum bags. The positioning structure includes a positioning column and a fixing block, and preferably also includes a positioning line drawn on the surface of the mold, so that the component bends downward and finally fits the mold and is located in the target area. The reinforcement structure 5 is welded by two longitudinal U-shaped steels, and its main function is to increase the strength and rigidity of the mold during lift...

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Abstract

The invention provides a complex-curvature aluminum alloy component vacuum creep age forming method. According to the complex-curvature aluminum alloy component vacuum creep age forming method, a device for complex-curvature aluminum component vacuum creep age forming is included. The device comprises a die surface with a complex curvature and a positioning structure arranged on the die surface. The die surface is provided with a through hole. The positioning structure comprises a fixing block correspondingly arranged in the through hole in a welded manner and cylindrical positioning columns arranged in the fixing block. The fixing block is provided with cylindrical blind holes into which the positioning columns are inserted. The material strength of the positioning structure is larger than the material strength of the die surface. The perimeter zone of a forming raw material aluminum alloy plate is provided with two kidney-shaped through holes for the two positioning columns to be inserted. By means of the device and method, an aluminum alloy component can be completely attached to the forming target zone on the die surface, and precise manufacturing of the component is achieved.

Description

technical field [0001] The invention relates to the technical field of precise forming and manufacturing of large complex curvature thin-walled aluminum alloy components, in particular to a method for vacuum creep aging forming of large thin-walled components for aerospace with the characteristics of complex large curvature and high forming stress. Background technique [0002] Creep aging forming is a new type of sheet metal forming method developed to realize the precise forming and high-performance collaborative manufacturing of large-scale overall high-strength aluminum alloy components for aerospace. It has the advantages of high forming accuracy, low cost, high repetition rate, and residual Low stress and other advantages. At present, this technology is mainly used in the forming and manufacturing of components with small curvature and low forming stress characteristics, such as the upper skin of aircraft wings. Due to the large radius of curvature of this type of com...

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Application Information

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IPC IPC(8): B21D31/00B21D43/00B21D37/10
CPCB21D31/00B21D37/10B21D43/003
Inventor 湛利华杨有良胡正根常志龙刘德博阮小鹏刘观日黄诚万李
Owner CENT SOUTH UNIV
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