A Lightweight Skin Skeleton Wing Integral Diffusion Connection Forming Method

Abstract

The invention provides a lightweight missile wing with the integral diffusion bonding structure of an envelope and a framework and a forming method of the missile wing. By means of the structural mode of the missile wing, ribs of the framework can be distributed according to the greatest bearing strength effect, ribs inside the framework can be narrower and can be 2-4 mm, and accordingly the weight of the missile wing can be greatly reduced. The method includes the steps that the peripheries are welded with electronic beams after the envelope and the framework fit with each other, the envelope and framework blank is placed in a die and a thermoforming device to be heated, the die is closed when the set temperature is reached, proper pressure is loaded, and the envelope and the framework are pressed for a certain period in a contact mode to achieve diffusion bonding. By means of the structural mode, the weight of the missile wing can be greatly reduced, the bearing capacity is improved, and dimensional precision is high.

Description

technical field [0001] The invention belongs to the technical field of precision forming, and in particular relates to a method for integral diffusion connection of lightweight skin skeleton wing parts. Background technique [0002] Lightweight structures are more and more widely used in the field of aerospace. Traditional wing parts mostly adopt skin skeleton structure, but the manufacturing process of this kind of titanium alloy wing parts is: skeleton machining, skin cold bending forming, covering The periphery of the skin is welded to the frame, and the skin is spot-welded to the ribs of the frame. However, due to the spot welding process, the width of the ribs of the skeleton is limited, and the width of the ribs is at least 10mm, which affects the weight of the wing parts. Other lightweight wing parts such as superplastic forming diffusion connection structure can achieve a good weight reduction effect, but due to the relatively difficult process, low product qualific...

AI Technical Summary

Problems solved by technology

However, due to the spot welding process, the width of the ribs of the skeleton is limited, and the width of the ribs is at least 10mm, which affects the weight of the wing parts

Other lightweight wing parts such as superplastic forming diffusion connection structure can achieve a good weight reduction effect, but due to the relatively difficult process, low product qualification rate and low production efficiency, they are not used in aviation. The aerospace field has been used in large quantities

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