Method for making holes in sandwich structure components containing carbon fiber composite materials
A technology of fiber composite materials and composite material layers, which is applied in the field of hole making of sandwich structural components containing carbon fiber composite materials, can solve the problems of scratching the hole wall of carbon fiber composite materials, affecting the quality of hole formation, etc., and achieve improved hole making and chip removal conditions, product quality assurance, and the effects of hole-making quality assurance
Active Publication Date: 2019-10-22
AVIC CHENGFEI COMML AIRCRAFT COMPANY
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[0003] The invention provides a hole-making method for a sandwich structure component containing a carbon fiber composite material, which solves the problem that the existing hole-making method will scratch the hole wall of the carbon fiber composite material and affect the quality of the hole.
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[0017] The present invention will be further described below in conjunction with accompanying drawing.
[0018] Such as figure 1 As shown, the hole-making method of the sandwich structure assembly containing carbon fiber composite material of the present invention, the sandwich structure assembly includes a carbon fiber composite material layer 1 and a metal layer 2, comprising the following steps:
[0019] S1. The first initial hole 11 is drilled through the reamer 4 to the carbon fiber composite material layer 1 in the sandwich structure assembly, such as figure 1 In step S1.
[0020] S2. In the first initial hole 11, use a first reamer 4-1 with a smaller diameter than the reamer 4 that drills the first initial hole 11, and drill a second initial hole for the metal layer 2 in the sandwich structure assembly. hole 21, such as figure 1 In step S2. At this time, the first primary hole 11 doubles as a metal drill chip removal space.
[0021] S3. adopt the same reamer 4 of t...
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The invention discloses a hole making method for an interlayer structure assembly containing a carbon fiber composite and relates to a hole making method. The problem that by means of an existing holemaking method, the hole wall of the carbon fiber composite is scratched, and the hole forming quality is affected is solved. According to the adopted technical scheme of the hole making method for the interlayer structure assembly containing the carbon fiber composite, the interlayer structure assembly comprises a carbon fiber composite layer and a metal layer; firstly, the carbon fiber compositelayer is drilled to form a first primary hole; secondly, in the first primary hole, the metal layer is drilled to form a second primary hole; thirdly, broaching is carried out on the second primary hole, and the hole diameter obtained after broaching is consistent with the hole diameter of the first primary hole; and finally, the interlayer structure assembly is drilled from the carbon fiber composite layer to the metal layer to form a final hole. The center line of the first primary hole, the center line of the second primary hole and the center line of the final hole are coaxial, the diameter of the second primary hole is smaller than the diameter of the first primary hole, and the diameter of the first primary hole is smaller than the diameter of the final hole. By means of the hole making method, the hole making cuttings removing situation is improved, the quality defect caused by hole wall scratching of hole making metal drilling cuttings is avoided, and the hole making quality is guaranteed.
Description
technical field [0001] The invention relates to a hole-making method, in particular to a hole-making method for sandwich structure components containing carbon fiber composite materials. Background technique [0002] Carbon fiber composite materials and metals form sandwich structural components During the assembly process, it is often necessary to make holes in sandwich structural components containing carbon fiber composite materials. The existing hole making method is to directly use a drill bit of the corresponding diameter to make holes. Due to the different properties of carbon fiber composite materials and metal materials, metal chips, such as aluminum chips, are prone to scratch the hole wall of carbon fiber composite materials during the hole making process. . Therefore, there is an urgent need for a hole-making method that avoids scratching the hole walls of carbon fiber composite materials in production. Contents of the invention [0003] The invention provide...
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IPC IPC(8): B23D75/00
Inventor 丁毅王伟唐筱岚
Owner AVIC CHENGFEI COMML AIRCRAFT COMPANY