Tooling and manufacturing method for manufacturing variable-section I-shaped composite material parts

The technology of a composite material and a manufacturing method is applied in the field of tooling and manufacturing for manufacturing variable-section type composite material parts, and can solve the problem that the molding manufacturing cannot be successfully completed, the pressure transmission effect in the web area is not good, and the surface of the workpiece is And internal defects and other problems, to avoid tooling deformation and scrap, reduce tooling combination and demoulding difficulty, and achieve a good overall effect
CN105172164BActive Publication Date: 2017-06-13SHENYANG AIRCRAFT CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENYANG AIRCRAFT CORP
Publication Date
2017-06-13

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Abstract

The invention relate to a tool and production method for producing a variable cross-section type I-shaped composite part. According to the technical scheme, the tool is composed of an upper male die, a lower male die, a middle spacer plate and composite even pressing plates on the two sides. The production method comprises the steps that firstly, the composite even pressing plates are made; then, carbon fiber prepregs cut into fixed sizes are laid on a forming tool; finally all parts of the carbon fiber prepregs laid well are transferred from the forming tool to an assembly solidification tool for integral assembly, and packaged in a vacuum bag; the fully sealed prepreg blank is subjected to solidification forming under the conditions of 120-180 DEG C and 0.3-0.8 mpa for 1-3 hours; and after cooling, the composite even pressing plates, the middle spacer plate, the upper male die and the lower male die are detached to obtain the variable cross-section type I-shaped composite part. According to the production process, the pressure transmission efficiency of the part in the solidification process can be improved; generation of the structure defect of the part is reduced; the shape and the internal quality of the part are ensured.
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Description

technical field

[0001] The invention relates to a manufacturing process of composite material variable-section I-shaped parts, in particular to a manufacturing method for ensuring the internal and external quality of composite material variable-section I-shaped parts during the manufacturing process. Background technique

[0002] Composite variable-section I-shaped parts belong to the main load-bearing structural parts, and are mainly used in aircraft rudders and wings. Such as figure 1 and figure 2 As shown, the variable cross-section I-shaped workpiece (400) generally has the following characteristics: the shape and structure of the workpiece are irregular, the size and thickness are uneven, the shape changes greatly, and the structural molding is difficult.

[0003] In the prior art, the vacuum bag-autoclave method is mainly used to manufacture carbon fiber composite molded parts. The method is to lay the prepreg blanks on the rigid male mold to form a C-shaped struct...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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