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Variable-thickness lightweight elastic wing skin forming method

A light-weight and variable-thickness technology, applied in the field of precision plastic forming, to achieve mass production, improve structural strength, improve pass rate and production efficiency

Active Publication Date: 2019-03-08
BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a method for forming the skin of the wing with variable thickness and light weight, so as to solve the technical problem of how to reduce the number of ribs in the skeleton and reduce the weight of the wing

Method used

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  • Variable-thickness lightweight elastic wing skin forming method
  • Variable-thickness lightweight elastic wing skin forming method
  • Variable-thickness lightweight elastic wing skin forming method

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Embodiment Construction

[0033] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] This embodiment proposes a skin forming method of variable thickness and lightweight wings, which is especially suitable for skin forming with high requirements for weight reduction and high strength. The purpose is to finally form skin 1 and skeleton 2 after light weight and weight reduction. assembly structure, such as figure 1 shown.

[0035] The forming method specifically includes the following steps:

[0036] S1. The skin includes the outer plate 1-1 and the inner plate 1-2. The outer plate 1-1 and the inner plate 1-2 are made of TA15 titanium alloy, and the thickness is selected as 0.5mm, such as figure 2 As shown, calculate the unfolded material shape of the skin outer plate 1-1 and inner plate 1-2 acc...

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Abstract

The invention belongs to the technical field of precision plastic forming, and particularly relates to a variable-thickness lightweight elastic wing skin forming method adopting an integral superplastic diffusion connection method. According to the variable-thickness lightweight elastic wing skin forming method, outer plates and inner plates of two-layer skin are subjected to diffusion connectionand superplastic forming, a process compensation surface formed in the process of forming reinforcing ribs is subjected to wire cutting to remove process allowance, then forming and manufacturing withdifferent thicknesses are realized in different regions of the skin, and a bending angle of a windward surface is subjected to cold bending. The variable-thickness lightweight elastic wing skin forming method is realized through a novel and reasonable design of the variable thickness reinforced structural skin, the combining diffusion connection, the superplastic forming, the wire cutting and thecold bending. According to the variable-thickness lightweight elastic wing skin prepared from the forming method, the structural strength of the skin can be effectively improved while weight reduction of traditional thickness skin is realized, the width of a skeleton rib can be greatly reduced, the weight of a traditional skeleton is greatly reduced, the requirements of future missile models on lightweight bearing structures can be met, the qualification rate and production efficiency of products are improved, and mass production can be realized.

Description

technical field [0001] The invention belongs to the technical field of precision plastic forming, and in particular relates to a method for forming a skin of a variable-thickness lightweight bomber wing by adopting an integral superplastic diffusion connection method. Background technique [0002] With the rapid increase of the flight speed of missiles, the demand for lightweight heat-resistant load-bearing structures is increasing, and the applications are becoming more and more extensive. Traditional wing parts mostly use skin skeleton structures. The general manufacturing process is as follows: : The skin is generally formed by cold bending of plates of equal thickness, the skeleton is machined and finished after casting, the skin and the ribs of the skeleton are spot welded, and the surrounding skin and the skeleton are welded by high-energy beams (electron beam welding or laser welding) ). However, due to the manufacturability of spot welding and the strength and rigid...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 刘章光王斌刘太盈张水仙师利民
Owner BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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