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Method for realizing co-curing of large-curvature omega-shaped stiffened wall plate

A technology of reinforced wall panels and wall panels, which is applied in the manufacture of high-performance carbon fiber composite structural parts, and realizes the field of co-curing of large-curvature Ω-shaped reinforced wall panels. Problems such as large curvature span of mold and Ω-shaped ribs, etc., to improve internal quality and mechanical properties, reduce development cost and difficulty, and prolong service life

Inactive Publication Date: 2019-09-27
航天海鹰(镇江)特种材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If traditional molds are used, there may be difficulties in laying layers, or there may be problems that cannot be demolded
[0008] 2. The skin panel structure usually adopts the Ω-shaped beam and the skin are cured separately and then bonded. This solution has unavoidable deformation problems
[0010] 4. Large curvature Ω-shaped reinforced wall panels, Ω-shaped ribs have a large curvature span, and then formed by co-curing process, Ω-shaped ribs soft mold core material is difficult to come out, and it is easy to cause splitting and delamination defects at the ends of Ω-shaped ribs

Method used

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  • Method for realizing co-curing of large-curvature omega-shaped stiffened wall plate
  • Method for realizing co-curing of large-curvature omega-shaped stiffened wall plate
  • Method for realizing co-curing of large-curvature omega-shaped stiffened wall plate

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Embodiment 1

[0029] A method for co-curing a large curvature Ω-type reinforced wall plate, comprising the following steps:

[0030] Step 1: Through mechanical processing, take the inner surface of the Ω-shaped rib of the reinforced wall panel as the forming surface, and process a set of Ω-shaped ribs according to the number of Ω-shaped ribs of the reinforced wall panel. The open-type airbag metal forming tooling, the metal forming tooling is divided into upper and lower mold bodies, and the upper and lower mold bodies are equipped with corresponding positioning pin controls and fastening bolt holes; For the forming surface, process a set of metal forming tooling that is completely consistent with the size and shape of the outer surface of the wall panel. The tooling is equipped with a corresponding drilling template, which is used as a metal forming tooling for the pressure pad; the inner profile surface of the reinforced wall panel is used as the forming surface , to process a set of Inva...

Embodiment 2

[0037] A method for co-curing a large curvature Ω-type reinforced wall plate, comprising the following steps:

[0038] Step 1: Through mechanical processing, take the inner surface of the Ω-shaped rib of the reinforced wall panel as the forming surface, and process 8 sets of Ω-shaped ribs according to the number of Ω-shaped ribs of the reinforced wall panel, which are completely consistent with the size and shape of the inner surface of the Ω-shaped rib The open-type airbag metal forming tooling, the metal forming tooling is divided into upper and lower mold bodies, and the upper and lower mold bodies are equipped with corresponding positioning pin controls and fastening bolt holes; For the forming surface, process a set of metal forming tooling that is completely consistent with the size and shape of the outer surface of the wall panel. The tooling is equipped with a corresponding drilling template, which is used as a metal forming tooling for the pressure pad; the inner profi...

Embodiment 3

[0045] A method for co-curing a large curvature Ω-type reinforced wall plate, comprising the following steps:

[0046] Step 1: Through mechanical processing, take the inner surface of the Ω-shaped rib of the reinforced wall panel as the forming surface, and process 5 sets of Ω-shaped ribs according to the number of Ω-shaped ribs of the reinforced wall panel, which are completely consistent with the size and shape of the inner surface of the Ω-shaped rib The open-type airbag metal forming tooling, the metal forming tooling is divided into upper and lower mold bodies, and the upper and lower mold bodies are equipped with corresponding positioning pin controls and fastening bolt holes; For the forming surface, process a set of metal forming tooling that is completely consistent with the size and shape of the outer surface of the wall panel. The tooling is equipped with a corresponding drilling template, which is used as a metal forming tooling for the pressure pad; the inner profi...

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Abstract

The invention discloses a method for realizing co-curing of a large-curvature omega-shaped stiffened wall plate. The method realizes the technical effect that 1, an open air bag is adopted, after the corresponding schemes of mold design and vacuum bag manufacturing are combined, the inner pressure and the outer pressure of the air bag can be better guaranteed, and the service life of the air bag is greatly prolonged; 2, opening design enables the interior of the air bag to communicate with the whole curing forming environment, so that the internal and external stress balance in cavities of parts is guaranteed, and co-curing of products is realized; 3, the problems that the interior of an omega-shaped cap-shaped stringer cannot be pressurized, and a core mold cannot be de-molded are solved, the requirement that pneumatic appearance surfaces of the products are smooth and flat is met, and indexes such as the thickness and the nondestructive performance of the products are further guaranteed to meet the quality requirements; and 4, the air bag technology is applied to manufacturing of the cap-shaped stiffened wall plate, so that the feasibility of the co-curing process can be ensured, the development cost and difficulty are reduced, the stress uniformity of a workpiece is guaranteed, and the internal quality and the mechanical property of the workpiece are further improved.

Description

technical field [0001] The invention relates to the technical field of advanced composite material manufacturing, in particular to the manufacture of high-performance carbon fiber composite material structural parts in the aircraft, spacecraft, and automobile industries, and in particular to a method for realizing co-curing of large curvature Ω-shaped reinforced wall panels. Background technique [0002] Resin-based carbon fiber composite materials have advantages such as high specific strength, high specific stiffness, high structural integration, strong designability, good fatigue fracture resistance, corrosion resistance, and good dimensional stability. At present, they have become a popular choice in aviation, aerospace, transportation and other fields. High-performance structural materials widely used in Among the various processes of composite material forming, autoclave has the characteristics of uniform forming temperature and pressure, and has strong adaptability to...

Claims

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Application Information

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IPC IPC(8): B29C70/34B29C70/44
CPCB29C70/342B29C70/44
Inventor 马秀菊倪敏轩黎玉钦郭渊孙成郭长龙张智佳任慧敏
Owner 航天海鹰(镇江)特种材料有限公司