Production process of carbon fiber composite aircraft with steps on the inner wall of the shell

Abstract

The invention discloses a production process of an aircraft made from a carbon fiber composite material with steps at the inner wall of a shell. The production process comprises the processing steps of confirming drawings, designing a silica gel inner container, designing and producing a mould, casting the silica gel inner container, preparing materials, cutting yarns, rolling the materials and forming, molding, trimming deflashing, cutting and processing, gluing, compensating soil and coating. The working procedures of designing and producing the silica gel inner container are increased on the basis of an existing compression molding process, the product is extruded by utilizing the expansion of the silica gel inner container after being heated to realize the molding of the aircraft made from the carbon fiber composite material with steps at the inner wall of the shell, after molding, and the silica gel inner container is taken out when the mould is cooled and the silica gel inner container is contracted after being cooled to obtain a finished product of the aircraft made from the carbon fiber composite material with steps at the inner wall of the shell. The production process disclosed by the invention can be used for overcoming the defects of the existing compression molding process and an air pressure molding process of a nylon air bag, and has the advantages of high production efficiency, high strength and good appearance of molded products, precise machining size and the like.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber composite material aircraft molding, and in particular relates to a production process of a carbon fiber composite material aircraft with steps on the inner wall of the casing. Background technique [0002] Conventional carbon fiber composite aircraft with uniform wall thickness and no steps on the inner wall can generally be formed by compression molding or nylon airbag air pressure molding. The compression molding process uses the forming furnace to pressurize and heat the mold, and pressurizes and heats the product to be formed through the mold to realize the molding of the product. figure 1 It includes processing steps such as drawing confirmation, mold design and manufacturing, material preparation, yarn cutting, coil forming, molding, trimming and cutting, gluing, soil filling and coating, etc. However, the molding process is not suitable for production. For products with thick walls a...

AI Technical Summary

Problems solved by technology

The compression molding process uses the forming furnace to pressurize and heat the mold, and pressurizes and heats the product to be formed through the mold to realize the molding of the product. figure 1 It includes processing steps such as drawing confirmation, mold design and manufacturing, material preparation, yarn cutting, coil forming, molding, trimming and cutting, gluing, soil filling and coating, etc. However, the molding process is not suitable for production. For products with thick walls and very light weight, using this molding process to produce a carbon fiber composite aircraft with steps on the inner wall of the outer shell has complex mold design and high cost, and it may even be impossible to produce the above-mentioned carbon fiber composite aircraft with steps on the inner wall of the outer shell

Another molding process is the nylon air bag air pressure molding process, which uses the molding furnace to pressurize and heat the mold. The high-pressure gas enters the nylon air bag through the gas nozzle and applies pressure to the product from the inner cavity of the product. At the same time, the molding furnace heats the mold to realize the product. Forming, the processing steps are basically the same as the compression molding process, and the difference between the compression molding process and the compression molding process is mainly to increase the air duct step in the coil forming stage, that is, to put the air duct into the product cavity in advance, but the above-mentioned nylon air bag air pressure molding process cannot Production of carbon fiber composite aircraft with steps on the inner wall of the shell, the step form of the above-mentioned carbon fiber composite aircraft with steps on the inner wall of the shell is as follows: image 3 The gluing step of the motor fixing plate on the aircraft shown includes the motor fixing plate body 1 and the step 10

[0003] In order to solve the above-mentioned existing two kinds of molding processes, it is impossible to produce the shell inner wall with such as attached image 3 The technical problems of the carbon fiber composite aircraft with the steps shown above are in urgent need of a solution that can realize the molding production of the above-mentioned carbon fiber composite aircraft with steps on the inner wall of the shell while ensuring the strength, processing accuracy and production efficiency of the molded product

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