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Forming equipment of large size composite stringer

A composite material and large-size technology, which is applied in the field of improvement of large-size composite material long truss forming tooling, can solve the problems of difficult processing, high cost, and high scrap rate, so as to improve surface accuracy and pass rate, reduce manufacturing costs, The effect of reducing processing costs

Active Publication Date: 2010-08-04
BEIJING AERONAUTICAL MFG TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: first, the base plate has a profile, which leads to difficult processing and high cost; second, the rigidity of the first mandrel 1 and the second mandrel 2 is poor, and they are easy to deform, resulting in deformation of the long truss profile and large deviations , high scrap rate

Method used

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  • Forming equipment of large size composite stringer
  • Forming equipment of large size composite stringer
  • Forming equipment of large size composite stringer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011]There are 8 prefabricated I-shaped composite material long stringers, each with a length of 10 meters. The upper and lower edges are curved, and the web is flat. The forming tooling to complete these stringers consists of a first mandrel and a second mandrel, the length of which is 10 meters, the right side of the first mandrel has the same profile as the left side of the stringer. surface; the upper surface of the first mandrel has the same profile as the lower surface on the left side of the upper edge of the stringer, the lower surface of the first mandrel has the same profile as the upper surface on the left side of the lower edge of the stringer, the first The right surface of the mandrel has the same profile as the left surface of the stringer web; the left side of the second mandrel has the same profile as the right side of the stringer; the upper surface of the second mandrel has the same profile as the stringer web The lower surface on the right side of the uppe...

Embodiment 2

[0013] There are 6 prefabricated inverted J-shaped composite material long stringers, each with a length of 8 meters. The upper and lower edges are curved, and the web is flat. The sectional shape of the stringer is an inverted J shape, and the forming tooling includes a first mandrel and a second mandrel, the lengths of the first mandrel and the second mandrel are equal to the length of the stringer, and the right side of the first mandrel has The same profile as the left side of the stringer; the lower surface of the first mandrel has the same profile as the upper surface on the left side of the lower edge of the stringer, and the right surface of the first mandrel has the same profile as the left side of the stringer web surface; the left side of the second mandrel has the same profile as the right side of the stringer; the upper surface of the second mandrel has the same profile as the lower surface on the right side of the upper edge of the stringer; the second mandrel Th...

Embodiment 3

[0015] There are 8 prefabricated inverted T-shaped composite material long stringers, each 10 meters long, with a curved lower edge and a flat web. The sectional shape of the long stringer is inverted T shape, and the forming tooling includes a first mandrel and a second mandrel, the length of the first mandrel and the second mandrel is 10 meters, and the right side of the first mandrel has a Same profile on the left side; the lower face of the first mandrel has the same profile as the upper face on the left side of the lower edge of the stringer, and the right face of the first mandrel has the same profile as the left face of the stringer web ; The left side of the second mandrel has the same profile as the right side of the stringer; the lower surface of the second mandrel has the same profile as the upper surface on the right side of the lower edge of the stringer, and the left surface of the second mandrel With the same profile as the right face of the stringer web. The e...

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Abstract

The invention provides forming equipment of a large size composite stringer, belonging to the forming technology of composites. The invention relates to improvement of the forming equipment of the large size composite stringer. The section of the stringer is I-shaped, inverse J-shaped or inverse T-shaped. The forming equipment comprises a first mandrel [1] and a second mandrel [2]. The invention is characterized in that the whole forming equipment comprises a plane base plate [5], 1-15 mandrel modules which are arranged on the base plate [5] and are placed in parallel along the width direction of the base plate [5], first mandrel [1] locating mechanisms and 2-20 second mandrel [2] locating mechanisms which are fixed on the base plate [5], arranged parallel to each other along the length direction of the base plate [5] and vertical to the mandrel modules. The base plate has no profile and the first mandrel 1 and the second mandrel 2 have high rigidity, thus greatly reducing deformation of the stringer profile and improving the profile precision and the qualified rate of the stringer workpieces.

Description

technical field [0001] The invention belongs to composite material forming technology, and relates to the improvement of a large-size composite material long truss forming tool. Background technique [0002] Large-size composite stringers refer to stringers with I-shaped, inverted J-shaped or inverted T-shaped cross-sections, with profiles on the upper and lower edges. The forming die of the existing stringer places the stringer horizontally, and the web of the stringer is in a vertical state. see figure 1 , by the first mandrel 1 and the second mandrel 2 to ensure the profile of the left and right sides of the stringer. The length of the first mandrel 1 and the second mandrel 2 is equal to the length of the stringer, and the right side of the first mandrel 1 has the same profile as the left side of the stringer; when the cross section of the stringer is I-shaped, The upper surface of the first mandrel 1 has the same profile as the lower surface on the left side of the up...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B7/00
Inventor 梁宪珠薛向晨
Owner BEIJING AERONAUTICAL MFG TECH RES INST
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