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Forming tooling and forming method for long stringer blank of hat-shaped composite material

A composite material and forming tooling technology, applied in the field of composite material forming, can solve the problems of difficult control of lay-up angle, poor quality consistency, long time consumption, etc., and achieve the effect of improving lay-up efficiency and ensuring quality and precision

Active Publication Date: 2016-08-24
AVIC COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, each corner is laid up separately, and the quality of the layup cannot be guaranteed to be consistent.
Therefore, in order to overcome the folds in the laying process or the inconsistency between the layups, it takes a lot of time, resulting in low efficiency and the layup quality is not easy to guarantee
The manual laying method has disadvantages such as poor quality consistency and long laying time for shorter stringers. For longer lengths, it is difficult to control the laying angle and requires a lot of human resources. The way the layup is done is difficult

Method used

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  • Forming tooling and forming method for long stringer blank of hat-shaped composite material
  • Forming tooling and forming method for long stringer blank of hat-shaped composite material
  • Forming tooling and forming method for long stringer blank of hat-shaped composite material

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Effect test

Embodiment 1

[0023] A kind of forming tooling of hat-shaped composite material stringer blank, the structure of formed hat-shaped composite material stringer blank 17 is: its cross-sectional shape is hat shape, and this hat-shaped composite material stringer blank 17 is made up of cap top 17a and The hat waist 17b and the hat brim 17c on both sides are composed, the thickness is 3mm, the length is 1000mm, the width of the hat top 17a is 40mm, the width of the hat waist 17b is 40mm, and the width of the hat brim 17c is 40mm; the inner surface of the hat waist 17b The radius of the transition arc at the junction with the inner side of the crown 17a is 3mm; the radius of the transition arc at the junction of the outer side of the hat waist 17b and the outer side of the hat brim 17c is 3mm, and the angle between the hat waist 17b and the hat brim 17c And the angle between the hat waist 17b and the hat top 17a is 120°; the forming tooling of the hat-shaped composite long stringer blank is compos...

Embodiment 2

[0031] A kind of forming tooling of hat-shaped composite material stringer blank, the structure of formed hat-shaped composite material stringer blank 17 is: its cross-sectional shape is hat shape, and this hat-shaped composite material stringer blank 17 is made up of cap top 17a and The hat waist 17b and the hat brim 17c on both sides are composed, the thickness is 4mm, the length is 1500mm, the width of the hat top 17a is 45mm, the width of the hat waist 17b is 45mm, and the width of the hat brim 17c is 45mm; the inner side of the hat waist 17b The radius of the transition arc at the junction with the inner side of the crown 17a is 4mm; the radius of the transition arc at the junction of the outer side of the hat waist 17b and the outer side of the hat brim 17c is 4mm, and the angle between the hat waist 17b and the hat brim 17c And the angle between the hat waist 17b and the hat top 17a is 150°; the molding tooling of the hat-shaped composite long stringer blank is composed ...

Embodiment 3

[0039]A kind of forming tooling of hat-shaped composite material stringer blank, the structure of formed hat-shaped composite material stringer blank 17 is: its cross-sectional shape is hat shape, and this hat-shaped composite material stringer blank 17 is made up of cap top 17a and The hat waist 17b and the hat brim 17c on both sides are composed, the thickness is 5mm, the length is 2000mm, the width of the hat crown 17a is 50mm, the width of the hat waist 17b is 50mm, and the width of the hat brim 17c is 50mm; the inner surface of the hat waist 17b The radius of the transition arc at the junction with the inner side of the crown 17a is 5mm; the radius of the transition arc at the junction of the outer side of the hat waist 17b and the outer side of the hat brim 17c is 5mm, and the angle between the hat waist 17b and the hat brim 17c And the angle between the hat waist 17b and the hat top 17a is 135°; the forming tooling of the hat-shaped composite long stringer blank is compo...

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Abstract

The invention belongs to the composite material molding technology, and relates to improvement on a molding device and a molding method for a hat-shaped composite material stringer blank. The molding device disclosed by the invention comprises a lower die and an upper die 9; and the lower die comprises a platform 1, a left side lower die 2, a right side lower die 3, a left pressurizing block 4, a right pressurizing block 5, a left cushion block 6, a right cushion block 7, a left bolt 10, a right bolt 11, a left baffle block 12, a right baffle block 13, a left positioning bolt 14 and a right positioning bolt 15. The molding steps are as follows: laying a prepreg flat blank 8; determining a spacing W1 between the left side lower die 2 and the right side lower die 3; assembling; and loading. The molding device and molding method improve the laying efficiency, and ensure the quality and accuracy of products.

Description

technical field [0001] The invention belongs to the molding technology of composite materials, and relates to the improvement of a molding device and a molding method for long stringer rough blanks of hat-shaped composite materials. Background technique [0002] At present, the forming method of most hat-shaped composite long stringer blanks is to use manual methods to lay them up layer by layer on the mold. The specific method is to prepare the lay-up mold first and then lay a single layer of prepreg on the mold. When the ply meets a corner during lay-up, it is necessary to use an iron or other heating means to stick the layers firmly, and it is easy to trap air bubbles between the plies. In addition, each corner is laid up separately, and the quality of the layup cannot be guaranteed to be consistent. Therefore, it takes a lot of time to overcome the folds that occur during the layup process or the misalignment between the layups, resulting in low efficiency and difficul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/54B29C70/34
CPCB29C70/345
Inventor 田宏伟薛向晨梁宪珠谢富原
Owner AVIC COMPOSITES
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