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Manufacturing method of airplane chemical milling skin three-dimensional chemical milling sample plate

A technology for milling a template and a manufacturing method, which is applied in the directions of aircraft parts, transportation and packaging, etc., can solve the problems of large machining error of three-dimensional milling template, poor scribing accuracy of mold tire and template forming accuracy, manual carving error, etc. Achieve the effect of improving the marking accuracy of the mold tire, improving the forming accuracy of the template, and reducing the size error

Inactive Publication Date: 2015-04-01
SHAANXI AIRCRAFT CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: the size error of the perspective opening on the three-dimensional milling template is large, which makes the scoring accuracy of the mold tire and the molding accuracy of the template poor, resulting in the dimensional accuracy of the aircraft milling skin not meeting the requirements after chemical milling.
The reason is: the large error of mold tire forming and the error of manual engraving lead to large processing error of three-dimensional milling sample

Method used

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  • Manufacturing method of airplane chemical milling skin three-dimensional chemical milling sample plate
  • Manufacturing method of airplane chemical milling skin three-dimensional chemical milling sample plate
  • Manufacturing method of airplane chemical milling skin three-dimensional chemical milling sample plate

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Embodiment

[0032] Such as figure 1 The shown chemical milling skin part has a length of 6065mm and a width of 2306mm, among which there are 57 quadrilateral chemical milling areas, each of which is 46mm long and 28mm wide, and the material thickness of the part is δ=2.5mm.

[0033] Establish a digital-analog data set for a standard model process.

[0034] Firstly, based on the digital model of the aircraft milling skin, use CATIA software to establish a digital model data set of a standard model process, and use the shape of the digital model to offset the material thickness of the aircraft milling skin to δ2.5mm inwards, and establish the digital model data of the standard model process Set, in the digital-analog data set of the standard model process, there are 57 perspective openings in the normal direction of the grooves that need to be milled in the aircraft milling skin, and the size of each perspective opening is 46mm in length and 28mm in width. Set 2 chemical milling positionin...

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Abstract

The invention belongs to the technical field of chemical milling, and relates to improvement of a manufacturing method of a large-sized airplane chemical milling skin three-dimensional chemical milling sample plate. The method is characterized in that the three-dimensional chemical milling sample plate is manufactured through the following steps: establishing a standard sample board technological digital-analog data set; manufacturing a standard sample board; establishing a chemical milling sample template technological digital-analog data set; manufacturing the three-dimensional chemical milling sample board. According to the improved manufacturing method of the airplane chemical milling skin three-dimensional chemical milling sample plate, the dimensional error of a perspective hole in the three-dimensional chemical milling sample plate can be greatly reduced, and the mold scribing accuracy and the sample plate forming accuracy are improved, so that the dimensional accuracy of the airplane chemical milling skin is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of chemical milling and relates to the improvement of a method for manufacturing a large-scale aircraft chemical milling skin chemical milling template. Background technique [0002] In the manufacturing process of aircraft parts, according to the requirements of the total mass and strength of the aircraft, there are a large number of skin parts with equal thickness or variable thickness and single or hyperboloid surfaces, all of which need to be chemically milled to meet the requirements of aircraft reduction. Requirements. Chemical milling is a special cutting method without cutting tools and tool marks. It exposes the surface of the parts to be processed, protects the unprocessed surface with a corrosion-resistant coating, and immerses the parts in a chemical solution for corrosion. The metal in the part is dissolved and removed according to the selected size requirements, so as to achieve the purpose of...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00B23P2700/01
Inventor 杨磊於智良张大钧吕锐雷堃赖春灵刘腾尧王锦绣
Owner SHAANXI AIRCRAFT CORPORATION
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