High-precision reflector composite material forming die structure and forming method thereof

Abstract

The invention relates to a high-precision reflector composite material forming die structure and a forming method thereof, and belongs to the technical field of composite material production. The high-precision reflector composite material forming die structure comprises a composite material shell, a first reinforcement back reinforcement, a composite material cylinder and a second reinforcement back reinforcement; the first reinforcement back reinforcement and the second reinforcement back reinforcement form a sector-shaped structure, the composite material cylinder is arranged in the central area of the sector-shaped structure, and the first reinforcement back reinforcement, the second reinforcement back reinforcement and the composite material cylinder are cemented to form one body; and the edge of the composite material shell is a two-step structure form. The invention discloses a high-precision reflector composite material forming die structure form. The structure adopts a composite material shell + composite material back reinforcement structure form, and the back reinforcements adopt the sector-shaped structure. Compared with a grid structure, the structure provided by the invention has the following advantages: 1, a composite material die has good heat stability; 2,air surrounding the die is smooth, and the die is uniformly heated; and 3, the composite material shell adopts two steps, so the self rigidity of the composite material die is increased.

Description

technical field [0001] The invention relates to a high-precision reflector composite material molding die structure and a molding process method thereof, belonging to the technical field of composite material manufacturing. Background technique [0002] Ordinary precision reflectors have relatively low root mean square error requirements for surface accuracy, and their linear expansion coefficient has relatively little influence on root mean square error. This type of mold structure can meet the requirements only by using ordinary cast iron molds. [0003] For high-precision reflectors, due to the relatively high root mean square error requirements, metal molds can no longer meet the surface accuracy requirements of high-precision reflectors due to their high thermal expansion coefficients, and composite material molds have the same linear expansion coefficient as composite products. It is the best choice for manufacturing high-precision reflectors. However, the structural ...

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Problems solved by technology

However, the structural form of the composite material mold has a great influence on its thermal stability. How to design a composite material mold with high thermal stability is a difficult problem

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