Composite material casing containing inward-flanging windows, forming die and forming method

Abstract

The invention relates to a composite material casing containing inward-flanging windows, a forming die and a forming method. The whole casing is of a cylindrical or conical rib-skin structure, and ischaracterized in that the skins at the upper side and lower side of the structure are flanged inwards along the radial direction to form an upper end framework and a lower end framework of the casing;the side surface of the structure is provided with an even number of windows towards the interior of the cylinder, and the inner walls of windows are in a step shape; every two windows are symmetrically distributed along the center of circle at the circumference; the casing is of an integrated forming structure. The composite material casing has the advantages that the inward-flanging windows andthe composite material casing with the rib-skin structure are integrally formed, so that the weight of the composite material member is reduced, and the structure efficiency is improved; the composite material casing is suitable for manufacturing the composite material member of the rib-skin structure containing the inward-flanging windows; by adopting the integrated structure, the weight is light, the strength is high, and a microwave absorbing and transmitting unit can be formed after a functional material is introduced into the integrated window; by adopting the structure type, the wide application prospect in the fields of anti-counterfeiting, hiding and the like of aircrafts is realized.

Description

technical field [0001] The invention relates to a composite material shell with an inner flanging window, a molding die and a forming method, in particular to a molding technology of a rib-skin high temperature resistant composite material shell with an inner flanging window. Background technique [0002] Rib-skin structure composite materials have the characteristics of high structural efficiency, strong buckling resistance, high specific strength and specific stiffness, etc., showing unparalleled application prospects, and have been widely concerned and applied in the aerospace field. [0003] Processes such as process construction, inspection and maintenance, and equipment installation often occur in the use of rib-skin structure composite components. The implementation of these processes requires the design of one or more open operating windows in the skin-grid structure composite components. . The realization of the opening in the composite material component is usuall...

AI Technical Summary

Problems solved by technology

[0006] The technical solution of the present invention is to overcome the deficiencies of the prior art and provide a technical solution for the integrated molding of the inner flanging window and the rib-skin structure composite material, which solves the high-precision overall problem of the window with complex profiles , the composite structural parts produced have the characteristics of small weight and high structural efficiency

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