Lightweight hot forming die of special-shaped curved aluminum alloy thin-wall part and design method thereof

Abstract

The invention relates to a lightweight hot forming die of a special-shaped curved aluminum alloy thin-wall part and a design method thereof. The die comprises a male die (1), a female die (2), positioning plates (3) and lifting lugs (4), wherein the bottom surface of the male die (1) is a forming molded surface which protrudes outwards, and the amplification coefficient of the forming molded surface on the basis of the molded surface of a workblank is determined according to the hot forming temperature requirement; a forming groove is formed in the top surface of the female die (2), and the amplification coefficient of the profile of the forming groove on the basis of the molded surface of the workblank is determined according to the hot forming temperature requirement; the positioning plates (3) are located in the middle of the both sides of the female die (2); and the lifting lugs (4) are respectively distributed on the side surfaces of the male die (1) and the female die (2). According to the lightweight hot forming die, precise hot forming of the special-shaped curved aluminum alloy thin-wall part can be effectively guaranteed, and the special-shaped curved aluminum alloy thin-wall part formed by the die has the advantages of stable quality, high dimensional accuracy, profile accuracy and surface quality, short forming cycle and high production efficiency.

Description

technical field [0001] The invention belongs to the field of precision sheet metal processing, and relates to a thermoforming die and a design method thereof. Background technique [0002] At present, aerospace product parts are developing in the direction of light weight, complexity and integration. Aluminum alloys are widely used in aerospace, rail transit, weapons and other fields. [0003] In the field of aerospace, the requirements for the integration and lightweight of product components are getting higher and higher, and the requirements for manufacturing dimensional accuracy are also getting higher and higher. A special-shaped curved aluminum alloy thin-walled part has the characteristics of thin wall, variable cross-section, and asymmetry. The traditional cold forming process is prone to defects such as wrinkles and cracks, and the rebound after forming is large, and the dimensional accuracy cannot meet the requirements. Therefore, this type of component needs to ...

AI Technical Summary

Problems solved by technology

A special-shaped curved aluminum alloy thin-walled part has the characteristics of thin wall, variable cross-section, and asymmetry. Using the traditional cold forming process, defects such as wrinkles and cracks are prone to occur, and the rebound after forming is large, and the dimensional accuracy cannot meet the requirements.

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