Symmetrical non-rotational composite grid structure suitable for automatic forming

By designing a symmetrical non-rotational composite material oblique mesh structure suitable for automated molding, and using the upper and lower end frames and bidirectional spiral ribs as an integral molding process, the problem that the oblique mesh form in the existing technology cannot be adapted to automated molding has been solved, and the lightweight and automated production of rocket structures has been realized.

CN116214955BActive Publication Date: 2026-05-26BEIJING INST OF ASTRONAUTICAL SYST ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING INST OF ASTRONAUTICAL SYST ENG
Filing Date
2022-11-15
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The existing oblique mesh form cannot be adapted to automated molding processes, making it difficult to achieve automated mass production and lightweight design of symmetrical non-rotational composite material structures.

Method used

The design is suitable for the automatic molding of a symmetrical non-rotational composite material oblique grid structure. It adopts an integrated molding structure of upper and lower end frames and bidirectional spiral ribs. The structure is automatically formed by laying fiber bundles along equal spiral lines, realizing the automated molding of skinned and skinless structures.

Benefits of technology

It improves the production efficiency and quality consistency of the structure, realizes lightweight and low-cost automated mass production, and is suitable for various composite material grid structures in rocket structures.

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Abstract

This invention discloses a symmetrical non-rotational composite material oblique mesh structure suitable for automated molding, comprising an upper frame, a lower frame, and bidirectional helical ribs; the upper frame, lower frame, and bidirectional helical ribs are integrally molded structures, and the structural materials used for the upper frame, lower frame, and bidirectional helical ribs are composite materials; the bidirectional helical ribs include two mutually symmetrical ribs, and the center line of the outer contour surface of each rib is a helix with equal pitch, equal helix angle, or geodesic. This invention further discloses methods for determining the center line of ribs used in various typical symmetrical non-rotational structures applied in aerospace engineering. The oblique mesh structure of this invention is rationally designed, lightweight, and suitable for automated mass production.
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