Hole making method for porous similar skin part

A technology of skin parts and hole drilling, which is applied in metal processing and other directions, can solve the problems of difficulty in pasting release cloth and high pasting efficiency, and achieve the effects of light weight, accurate avoidance hole position, and high strength

Inactive Publication Date: 2021-10-01
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The purpose of the present invention is to provide a hole-making method for porous similar skin parts, which retains the method of pasting the release cloth, and further optimizes the method of pasting the release cloth, and combines the existing 3D printing technology to effectively solve the problem of sticking. Difficult problem with release cloth, high paste efficiency

Method used

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  • Hole making method for porous similar skin part
  • Hole making method for porous similar skin part
  • Hole making method for porous similar skin part

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Embodiment

[0049] This embodiment takes a special-shaped skin part 1 with a large curvature change as an example of our company, which relates to the technical field of aircraft skin processing. The present invention is further described. Now it is necessary to make holes on the special-shaped skin part 1, and the skin part The holes drilled on 1 are generally positioning holes 3, which are used for assembly and positioning later. The carbon fiber skin is located on the aerodynamic surface of the aircraft. The device interferes, the positioning function fails, and the carbon fiber skin is evenly distributed on the aerodynamic surface of the aircraft, and the drilling position is stripped, which will reduce the aerodynamic performance of the aircraft and affect the normal flight of the aircraft. Therefore, it is now necessary to make a positioning hole 3 on the special-shaped skin part that does not appear to be detached, and whose aperture and hole position meet the requirements.

[0050] ...

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Abstract

The invention discloses a hole making method for a porous similar skin part, relates to the technical field of aircraft skin machining. A method for pasting demolding cloth is kept, and a data model for establishing a skin part auxiliary tool-trepanning tool is adopted; then, a proper material is selected to print a trepanning tool real object through the 3D printing technology; the demolding cloth is pasted, and after positioning is finished through a trepanning tool, a hole making position is determined; and finally, hole making is performed so as to obtain a holed skin part meeting a requirement. According to the method, the problem that the demolding cloth is difficult to paste is effectively solved, and compared with the prior art, the method has the advantages that the hole making efficiency is remarkably improved, the hole making qualification rate can reach 98%, the rejection rate is reduced to 0, and the machining cost is remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of aircraft skin processing, in particular to a hole-making method for porous similar skin parts, which is often used in the processing operations of aircraft skin special-shaped porous and similar parts. Background technique [0002] With the continuous optimization and improvement of modern design methods and processing methods, aircraft structural parts are gradually developing in the direction of light weight, complexity, and integration. Composite skinned parts with irregular hole surfaces. Such parts often have the problems of many similar parts, a large number of drilling holes, complex distribution of hole positions, poor processing conditions of composite materials made of layered layers, and poor hole quality. [0003] In practical application, when using a drill bit to make holes, there are strict requirements on the sharpness of the drill bit and the reasonable selection of drilling parameters, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B26D7/01B26F1/16
CPCB26D7/01B26F1/16
Inventor 田冬冬王绍江高涛刘子渝钟建戴朝辉
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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