Composite material I-shaped stringer molding process

A composite material and molding process technology, applied in the field of composite material manufacturing, can solve problems such as easy deformation, insufficient rigidity of soft molds, poor surface quality of parts, etc., meet the requirements of reducing manufacturing accuracy and matching accuracy, and improve molding quality and appearance quality Good results

Inactive Publication Date: 2018-12-11
COMAC +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of rigidity of the soft mold itself, it is easy to deform under the curing pressure, resulting in poor surface quality of the parts, so it is generally not used to form parts with assembly relations

Method used

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  • Composite material I-shaped stringer molding process
  • Composite material I-shaped stringer molding process
  • Composite material I-shaped stringer molding process

Examples

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Embodiment Construction

[0045] In the following detailed description of the preferred embodiment, reference is made to the accompanying drawings which form a part hereof. The accompanying drawings show, by way of example, specific embodiments in which the invention can be practiced. The illustrated embodiments are not intended to be exhaustive of all embodiments in accordance with the invention. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention.

[0046] combine Figure 1 to Figure 8 Shown in, shows the composite material I-shaped long truss molding process according to the present invention, comprises steps:

[0047] Manufacture of hard mold tooling: such as figure 1 As shown in , the mandrel 1 on the left side of the girder, the mandrel 2 on the right side of the girder, the cover plate 3 of the upper edge of the girder and the bottom plate of the lower edge of the girder are forme...

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PUM

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Abstract

The invention provides a composite material I-shaped stringer molding process, which comprises: manufacturing a hard mold tool; manufacturing a soft mold process cover plate; manufacturing a lower edge strip soft mold; molding an I-shaped stringer core mold; molding an I-shaped stringer lower edge strip flat plate; molding an I-shaped stringer upper edge strip flat plate; molding a stringer wick strip; combining to obtain an I-shaped stringer tool; preparing a vacuum bag; curing; and demolding. According to the present invention, the part manufactured according to the process has good appearance quality, the generation of internal defects cannot be caused, the molding quality of the thin part can be improved, and the requirements on the manufacture precision and the matching precision of the molding tool are reduced so as to reduce the manufacturing cost of the part.

Description

technical field [0001] The invention belongs to the field of composite material manufacturing, and in particular relates to a composite material I-shaped long truss forming process. Background technique [0002] With the increase in the use of aerospace composite materials, composite manufacturing has quickly become a major component of the aircraft industry. Among these composite materials, I-shaped trusses are currently widely used in aircraft body structures due to their good mechanical properties. The most commonly used molding process for I-shaped trusses is the autoclave process. Since the upper and lower edges of the I-shaped truss have a certain assembly relationship, the tooling used for its forming is mainly a combined tooling, rather than the common male tooling and female tooling. In the combined tooling, the composite material manufacturers at home and abroad most commonly use the tooling that matches the hard mold and the hard mold. In the hard-hard mold com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/38B29C70/54
CPCB29C70/342B29C70/382B29C70/386B29C70/54
Inventor 刘军刘卫平徐应强李志远张君红杭勇黄彬瑶崔立军徐俊杰
Owner COMAC
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