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Tool and method for repairing composite laminated sheet structural member

A technology for composite material layers and structural parts, which is applied in the direction of manufacturing tools, metal processing equipment, grinding machines, etc., can solve problems such as mismatch between the motherboard and the pre-cured patch, poor repair effect, and inaccurate angles, and achieve improved grinding Improve cutting quality and work efficiency, save repair cost and improve repair strength

Active Publication Date: 2012-07-25
JIANGXI HONGDU AVIATION IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the manual operation, the mitered corners and pre-cured patches will inevitably be uneven, the angles are not accurate, and the repeatability is poor, resulting in mismatch between the motherboard and the pre-cured patches, and the repair effect is not good.

Method used

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  • Tool and method for repairing composite laminated sheet structural member
  • Tool and method for repairing composite laminated sheet structural member
  • Tool and method for repairing composite laminated sheet structural member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 As attached Figure 1-4 Shown: A repair tool for an aircraft vertical tail box with a carbon fiber composite laminate structure includes a pair of male grinding wheels 1 and female grinding wheels 2 with the same external dimensions and matching each other; the male grinding wheel 1 is composed of a cam body 11 and a convex diamond particle coating 12 The cam body 11 is composed of a first drill rod 111, a first cylinder 112, and an outer convex cone 113 that share the same central axis and are connected together; the outer convex cone 113 is provided with a cylindrical boss 115 sharing the same central axis and a The first central bottom hole 116 of the inner cavity of the cylindrical boss 115 and the three radially uniformly distributed first long grooves 114 communicating with the first central bottom hole 116; the convex surface 117 of the convex cone 113 is plated with convex diamond The particle coating 12, the convex diamond particle coating 12 and the c...

Embodiment 2

[0022] Example 2: The method for repairing the vertical tail box of an aircraft with a carbon fiber composite laminate structure using the above tools includes:

[0023] Determine the inner diameter of the first central bottom hole 116 of the male grinding wheel and the outer diameter of the cylindrical boss 115 of the male grinding wheel according to the diameter of the damaged hole contained in the vertical tail box to be repaired, and then according to the outer convex cone apex angle α and the composite material layer The thickness of the pressing plate determines the outer diameter of the outer convex cone 113 of the male grinding wheel; the inner diameter of the second central bottom hole 216 of the female grinding wheel is equal to the outer diameter of the cylindrical boss 115 of the male grinding wheel, the inner concave cone apex angle β=α, the inner concave cone 213 The outer diameter of is equal to the outer diameter of the convex cone 113 of the male grinding whee...

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Abstract

The invention relates to a tool for repairing a composite laminated sheet structural member. The tool for repairing the composite laminated sheet structural member comprises a pair of male grinding wheel and a female grinding wheel which have the same overall dimension and are matched with each other, wherein the male grinding wheel consists of a cam body and a convex surface diamond particle plated layer; a cylindrical boss and three first elongated slots are formed on an outer convex surface cone of the cam body; the three first elongated slots are distributed radially and uniformly; the female grinding wheel consists of a concave wheel body and a concave surface diamond particle plated layer; a second central bottom hole and three second elongated slots are formed on an inner concave surface cone of the concave wheel body; the three second elongated slots are distributed radially and uniformly; and the outer diameter of the cylindrical boss of the male grinding wheel is equal to the inner diameter of the second central bottom hole of the female grinding wheel. A repairing method comprises the following steps of: processing inner concave surface conical holes in the damaged holes, needing to be repaired, of the male grinding wheel which is arranged into an electric drill; cutting outer convex surface conical solidified patches by using the female grinding wheel which is arranged into the electric drill; placing the outer convex surface conical solidified patches on the inner concave surface conical holes which are covered by glue films; and heating, pressurizing and solidifying an assembled glue-jointed composite member. In the tool and the method, the traditional hand grinding mode is replaced by a machining mode, so the grinding quality and the work efficiency are improved and labor intensity is reduced.

Description

technical field [0001] The invention relates to a repairing tool and a repairing method, in particular to a repairing tool and a repairing method of a composite material laminate structure. Background technique [0002] The repair of composite laminate structural parts involves two tasks: digging holes and making pre-cured patches. Traditional repairs are done manually by digging holes and making pre-cured patches. The specific steps are: digging holes, first find out the large, Small circle, then use a rotary grinder to make a large circle outline, and then use a grinding wheel grinder to gradually grind from the smallest circle to the large circle, and finally make a miter angle in the height direction of the repair area; the pre-cured patch is made by using the cut part Composite laminates with the same fiber layup, according to the diameter of the large and small circles in the repair area, use a grinding wheel grinder to grind out a cured patch. Due to the manual oper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B19/00
Inventor 吴平万建平甘武奎
Owner JIANGXI HONGDU AVIATION IND GRP
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