Manufacturing method of three-dimensional woven composite material hollow spiral spring

Abstract

The invention provides a manufacturing method of a three-dimensional woven composite material hollow spiral spring. The manufacturing method comprises the following steps: first, using spinnable and weavable fiber to weave a three-dimensional braidd tube on the outer surface of a bent strip-type core model through the three-dimensional weaving technology so as to obtain a strip-type fabric preform; then, placing the strip-type fabric preform in a spiral space formed between an internal model and an external model; next, injecting basis material in the spiral space by adopting the vacuum assisted resin transfer molding process (VARTM), and adopting warming and pressurization to solidify the basis material and the three-dimensional braidd tube into the composite material spiral spring; and finally, removing the core model in the spiral spring to obtain the three-dimensional woven composite material hollow spiral spring. The three-dimensional woven composite material hollow spiral springmanufactured through the manufacturing method has the advantages of light weight, antifatigue, corrosion resistance and impact resistance of the composite material spiral spring to further improve theperformance including light weight and spring rigidity.

Description

technical field [0001] The invention relates to a manufacturing method of a helical spring made of composite material. Background technique [0002] With the advancement of industrial technology, composite materials have been widely used in aerospace, transportation, machinery, construction and other fields, and springs made of them, including leaf springs and coil springs, have also been widely used in automobiles, high-speed rail, etc. Among them, the leaf spring is more widely used due to its simple design, manufacturing and processing technology, and has achieved great results in improving energy efficiency, reducing weight, and reducing life-cycle costs. Due to various factors, the development of coil spring is relatively slow, and the existing products and research results have not fully utilized the comprehensive advantages of composite materials. [0003] With the advancement of technology, three-dimensional weaving technology has been further developed, and three-d...

AI Technical Summary

Problems solved by technology

Therefore, some helical springs have a certain angle of woven cloth or two-dimensional braided sleeves on the surface, which can partially improve performance and appearance, but the performance improvement is limited, and because there are still mechanical properties mismatch between the parts, so there will still be problems. There are weaknesses such as easy delamination, poor impact resistance, and short life, and increase the complexity of the process

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