Mold, method of making an assembled preformed structure, and method of making a wall panel structure

Abstract

The invention discloses a mold, a manufacturing method for assembling a preformed structure and a manufacturing method for a panel structure. The mold for preforming a U-shaped truss of the invention includes a base, a rigid mold and an elastic mold. The rigid mold is detachably placed On the base, the rigid mold has a U-shaped structure, and the rigid mold is covered on three adjacent outer wall surfaces of the base, the elastic mold is placed on the rigid mold, the elastic mold has a U-shaped structure, and the elastic mold is covered on on the outer wall of the rigid mold. The preformed mold of the U-shaped stringer reduces the manufacturing cost of the mold, indirectly improves the lay-up efficiency of the U-shaped prepreg layer on the skin layer, improves the quality of the corner of the stringer, and ensures the quality of the product. Quality and precision simplify the process.

Description

technical field [0001] The invention relates to the technical field of aviation manufacturing, in particular to a mold, a method for manufacturing a preformed structure, and a method for manufacturing a wall plate structure. Background technique [0002] Composite materials are widely used in the aerospace field due to their advantages of high specific stiffness, strong designability, and easy integral molding. In the field of aircraft, composite materials have been used as main components such as wing skins (aka: wing panels), fuselage, horizontal stabilizers, ailerons, vertical tails, sidewall panels, bulkheads, ribs and stiffeners. bearing member. Among them, the wall panels with T-shaped and U-shaped girders as reinforcing ribs are widely used in the main bearing structure of the fuselage. However, most of the current U-shaped truss unit layup molds are all-steel molds for right-angle profiles. During the layup process, it is difficult to ensure that the vertical part ...

AI Technical Summary

Problems solved by technology

However, most of the current lay-up molds for U-shaped truss units are all-steel molds for right-angle profiles. The pressure transmission is not in place, and finally there will be delamination and pore defects of the siding long stringer, which will affect the product quality

T-shaped long truss panel structure, due to the relatively small bonding area between the bottom layer of the long truss and the skin, the long truss is easy to deglue, which affects the quality of the entire panel structure

In addition, during the curing process of the current T-shaped and U-shaped long truss panel structures, the long truss unit layups on both sides are removed from the lay-up tooling mold and transferred to the curing tooling and need to be repositioned and assembled. The accuracy is not easy to guarantee, and the process is cumbersome and Affect the positioning accuracy of the long truss axis, it is easy to appear that the long truss axis and straightness do not meet the requirements, and at the same time, the surface quality of its parts is not good

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