Integral molding method for composite material joints with variable thickness and complex configuration
A composite material and integral molding technology, which is applied in the field of continuous fiber-reinforced resin matrix composite material joint manufacturing, can solve the problem of reducing the overall use efficiency of joint products, poor temperature resistance and mechanical properties, and weakening the use range of high-performance composite materials, etc. problems, to achieve the effect of ensuring dimensional stability and safety, improving dimensional accuracy and internal and external appearance quality, and low processing requirements
Active Publication Date: 2015-11-04
BEIJING SATELLITE MFG FACTORY
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Problems solved by technology
Although this forming method can guarantee the shape of the product, the interior of the product is a non-uniform material, and the poor temperature resistance and mechanical properties of the structural adhesive reduce the overall use efficiency of the joint product
This preparation method weakens the use range of high-performance composite materials in the field of joint products
Method used
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[0046] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0047] The composite joints to be formed include rib blanks, tube wall blanks and flange blanks;
[0048]Three kinds of blanks for composite material joints are molded;
[0049] Rib blank 3 forming dies include die base 15, two die baffles 16, M8 screws 17, rib pre-compression film A18, rib pre-compression die B20; die base 15 is a hollow cuboid, the The hollow shape is a semi-cylindrical, such as Figure 6 As shown, two die baffles 16 are respectively fixed on both sides of the die base 15 with M8 screws 17, and the die base 15 and the two die baffles 16 form a cuboid with an upper opening; Die A18 is the forming male mold of the large blank 19 of the reinforcing rib; the pre-pressing mold B20 of the reinforcing rib is the forming male mold of the small blank 20 of the reinforcing rib;
[0050] The tube wall blank 2 forming mold includes two...
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The invention belongs to the technical field of composite material forming processes, and relates to an integral forming method of a changeable-thickness complex-structure composite connector, which has a high application value for manufacturing continuous-fiber-reinforced resin-matrix composite connectors with changeable thicknesses, complex structures, high performance and high outer size precision in the industries of aviation, aerospace and weaponry. According to the integral forming method, a way of split forming and integral assembling is adopted, namely through structural splitting, a connector which cannot be formed once is split into several blanks, and the several blanks are laminated on a special blank forming die by utilizing resin-impregnated carbon fiber prepreg.
Description
technical field [0001] The invention belongs to the technical field of composite material molding technology, and relates to an overall molding method for composite material joints with variable thickness and complex configuration, especially for those with variable thickness and complex structure, high performance, and high accuracy of shape and size in industries such as aviation, aerospace, and weaponry. The manufacture of continuous fiber reinforced resin matrix composite joints has good application value. Background technique [0002] High-performance continuous fiber-reinforced resin matrix composites have higher specific strength and specific stiffness than metal materials, and can be designed flexibly according to the mechanical environment of use, so they are increasingly used in aviation, aerospace, weaponry, automobiles, etc. in the structure. [0003] At present, due to the particularity of its forming method, high-performance continuous fiber-reinforced resin-b...
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IPC IPC(8): B29C70/34B29C70/54
CPCB29C70/342B29C70/345
Inventor 陈维强张鹏飞董丰路黎昱刘芃
Owner BEIJING SATELLITE MFG FACTORY