Composite material forming mould

Abstract

The invention belongs to the technical field of aerospace manufacturing and particularly relates to a composite material forming mould used for forming of composite material parts of a unilateral closed angle and closed edge strip structure. Existing composite material forming moulds comprise metal moulds, composite material moulds, rubber moulds, foam moulds, gypsum moulds, soluble polymer moulds and the like. Traditional composite material parts of a special-shaped structure can be manufactured in the mode that parts are formed through rubber contraction moulds, foam moulds, gypsum moulds and other moulds and then moulds are destroyed, but the moulds are only suitable for one-time or several-time forming, batch production is not facilitated, and the surface precision, quality and the like of the composite material parts manufactured through the moulds are inferior to those of the metal mould on the whole. The composite material forming mould used for forming of the composite material parts of the unilateral closed angle and closed edge strip structure is reasonable in design and easy to manufacture, and forming and mould releasing of the composite material parts of the unilateral closed angle structure are achieved.

Description

technical field [0001] The invention belongs to the technical field of aviation manufacturing, and in particular relates to a composite material molding die, which is used for molding composite material parts with single-side closed-angle closed edge strip structure. Background technique [0002] Composite materials have become one of the most important contemporary aeronautical structural materials due to their unique advantages of high specific strength, high specific stiffness, strong designability, good fatigue fracture resistance, corrosion resistance, good dimensional stability, and easy large-area overall forming. one. The position and amount of composite materials used in aircraft have become one of the main indicators to measure the advancement of aircraft structure. At present, foreign new fighter jets and civil aircraft use composite materials in large quantities. The F-22 uses more than 24% of composite materials. The B787 "Dream" civil aircraft developed by Boe...

AI Technical Summary

Problems solved by technology

Traditional heterogeneous structural composite parts can be manufactured by using rubber shrinkage molds, foam, plaster and other parts, and the parts can be obtained by destroying the mold after molding, but these molds are only suitable for one or several moldings, which is not conducive to mass production. The surface accuracy and quality of composite parts made by these molds are generally not as good as metal molds

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