Low-cost simple mold of composite materials for airplanes and fast manufacturing method

Abstract

The invention provides a low-cost simple mold of composite materials for airplanes and a fast manufacturing method. Aiming at the situation that a mold is generally integrally manufactured by metal materials, such as Q235A and Invar during molding of the composite materials for airplanes, the invention provides a special mold for manufacturing the molded surface of a thin-shell mold of composite materials for airplanes, and the fast manufacturing method. Common steel plates are manufactured into a grid frame structure, and the grid frame structure mainly consists of rib plates, a base, technological positioning holes and the like, wherein the rib plates are formed by laser cutting according to the mathematic model of composite material parts, the rib plates are connected with the base in a welding manner, the rib plates in two directions are integrated into a net shape in a welding or insertion manner, filling materials are injected in empty slots of a grid to be scrapped according to the molded surface, the mold strength is guaranteed, and heat dissipation is accelerated; the technological positioning holes are formed in the mold, so that the molded surface of the molded thin-shell mold is guaranteed to be precisely and repeatedly positioned on a numerical control machine tool, the precision is guaranteed, the mold materials are effectively saved, and the manufacturing cost of the mold is reduced.

Description

technical field [0001] The invention relates to a low-cost simple mold and a rapid manufacturing method of a composite material for aircraft. Background technique [0002] At present, when designing and manufacturing molds in the mold manufacturing industry, most of them use metal materials for overall processing and manufacturing. The material cost and processing costs are relatively high. When the service life of the mold is low or the number of times of use is small, it will cause great waste. Especially in the manufacture of large-scale and precision composite molding molds, due to the use of high-cost Invar materials, how to reduce the mold cost as much as possible while ensuring the accuracy of the parts is an urgent problem to be solved in the mold design and manufacturing process . [0003] The present invention relates to the simple mold design in the manufacturing process of the thin shell mold surface, and when the patent search is carried out with the keyword "s...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that in the precise forming process of composite materials, in order to reduce the influence of thermal deformation of the mold on the accuracy of composite material parts, a thin-shell mold surface with a small heat capacity can be used, and the mold required for the surface production process If the overall processing and manufacturing of metal materials is used, the cost is relatively high

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