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Composite fabricated part based on digital guide template and preparation method thereof

A composite material and prefabricated part technology is applied in the field of composite material prefabricated parts and their preparation based on digital oriented stencils. , the effect of increasing the fiber volume content

Active Publication Date: 2015-06-17
BEIJING NAT INNOVATION INST OF LIGHTWEIGHT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims to provide a composite material prefabricated part based on a digital guide template and its preparation method to solve the technical problems in the prior art that the thickness of the prefabricated part is limited and the fiber volume content cannot be greatly improved

Method used

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  • Composite fabricated part based on digital guide template and preparation method thereof
  • Composite fabricated part based on digital guide template and preparation method thereof
  • Composite fabricated part based on digital guide template and preparation method thereof

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preparation example Construction

[0045] According to a typical embodiment of the present invention, a method for preparing a composite material preform is provided. The preparation method includes the following steps: fixing a plurality of guide sleeves 10 on a guide template according to a predetermined path to form a predetermined shape; passing and laying the fibers 20 along the gaps between the plurality of guide sleeves 10 to form a plurality of stacked laying layers, The belt surface of the fiber extends in the laying layer, and the extension direction of the guide sleeve intersects with the laying layer (that is, the fiber is laid and arranged between the guide sleeves 10); the fibers 20 wound between the multiple guide sleeves 10 are compacted, A composite material preform is obtained. With the application of the technical solution of the present invention, since the fibers are laid and wound in a plurality of guide sleeves, the thickness of the preform can be controlled according to the number of lay...

Embodiment

[0052] Utilize technical scheme of the present invention to manufacture a composite material T-beam prefabricated part, as Figure 8a and 8b As shown - the T-beam preform includes a beam portion 41 and a beam portion 42 . Specific steps are as follows:

[0053] 1) The T-beam prefabricated model is layered. Since its thickness is 40mm and the thickness of one layer of laying yarn is 1mm, it is divided into 40 layers.

[0054] 2) According to the appearance characteristics of the parts and the force characteristics of the T-beam, the laying angles are 90°, 180°, 45°, 135°, and the fiber yarn laying method of four layers is a cycle, that is, the quadrilateral laying path.

[0055] 3) Design the shape and size of the guide template according to the quadrilateral laying path and the size of the T-beam. The cross-section of the guide template is rectangular, and the size is 600×500mm. Design the guide sleeve arrangement holes in the middle of the guide template, and the hole spaci...

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Abstract

The invention discloses a composite fabricated part based on a digital guide template and a preparation method thereof. The composite fabricated part comprises a plurality of guide sleeves and fibers wound among the plurality of guide sleeves, wherein the fibers are in flat strip shape and are laid along the gaps among the plurality of guide sleeves to form a plurality of overlapped laying layers; the strip surface of the fibers extends within the laying layers; and the extending direction of the guide sleeves is crossed with the laying layers. By applying the technical solution provided by the invention, the gaps are relatively small as the fibers are laid along with the gaps among the plurality of guide sleeves to form a plurality of overlapped laying layers, the strip surface of the fibers extends within the laying layers and the extending direction of the guide sleeves are crossed with the laying layers. The thickness of the fabricated part is designed by overlapping the layers of the fiber bundles due to such laying form. At the same time, the fibers are wound to greatly improve the fiber volume content of the composite fabricated part, thereby greatly improving the mechanical property of the composite fabricated part.

Description

technical field [0001] The invention relates to the technical field of composite material preparation, in particular to a composite material prefabricated part based on a digital guide template and a preparation method thereof. Background technique [0002] The manufacture of 3D woven composite material prefabrication is the basis of 3D woven composite material preparation, and the performance of the prefabricated part (including the manufacturing method and process) fundamentally determines the performance of the fabricated composite material. Therefore, since the 1980s, the requirements for weaving large-size, complex-shaped, high-performance, and lightweight prefabricated parts have become higher and higher. At present, there are various forms of prefabricated parts, mainly divided into three-dimensional woven prefabricated parts, orthogonal three-way woven prefabricated parts, stitched fabric prefabricated parts and so on. [0003] Among them, the three-dimensional weav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/68B29B11/00
Inventor 单忠德刘丰陈思思
Owner BEIJING NAT INNOVATION INST OF LIGHTWEIGHT LTD
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