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Accurate manufacturing method of bow-shaped aluminum alloy part

A technology of aluminum alloy parts and a manufacturing method, which is applied to the processing field of sheet metal parts of aviation aircraft, can solve the problems of milling and cutting out the shape, large amount of trimming work, and dimensional error of flanges, etc., and achieves the effect of improving hole accuracy and reducing labor intensity.

Pending Publication Date: 2022-07-29
SHENYANG AIRCRAFT CORP
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AI Technical Summary

Problems solved by technology

The disadvantage of this kind of processing method is that, because there are many bends in the part, in the process of brake forming, each bend cannot be accurately formed, so the part cannot be milled out according to the expanded size and the hole is formed first, but the wool Cut the shape after forming the surface in the state, and finally make the hole
During the production process, there may be dimensional errors in the flange formed by the brake press, resulting in the "bow" shaped surface not being able to fully fit the finished part
However, the hole position is determined by the template, and there is a large error to a certain extent.
In addition, due to the narrow and long structure of the parts, the deformation after heat treatment is large, the workload of trimming is large and the shape is difficult to guarantee
The above problems make it difficult to process such "bow" aluminum alloy parts

Method used

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  • Accurate manufacturing method of bow-shaped aluminum alloy part
  • Accurate manufacturing method of bow-shaped aluminum alloy part

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Embodiment 1

[0037] figure 2 (a), figure 2 (b), figure 2 (c) and figure 2 As shown in (d), an accurate manufacturing method of "bow"-shaped aluminum alloy parts, the manufacturing method is realized based on a molded tire, wherein the molded tire includes a carcass 1, a positioning pin 2, a positioning plate 3, a cover plate 4, Drill sleeve 5, mold pin 6, special tool pin 7 and eyebolt 8.

[0038] The working profile of the carcass 1 is designed according to the inner profile of the part. A φ4.2mm hole is arranged at the position of the φ4.2mm hole on the corresponding part, and the side surface is milled with a through hole to facilitate the weight reduction of the structure. The edge line of the part is used to check whether the position of the part is offset during the forming process. Four positioning plates 3 are arranged symmetrically on both sides of the edge line of the part for auxiliary positioning to prevent the part from moving during the forming process; Two positionin...

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Abstract

The invention provides an accurate manufacturing method of a bow-shaped aluminum alloy part, and belongs to the technical field of aviation aircraft sheet metal part machining. A set of technological process is newly designed, the technological process of numerical milling blanking, manual forming and drilling is used for replacing the technological process of linear blanking, brake pressure forming, shape cutting and drilling, and a set of tool which is newly designed is used in cooperation for part forming and drilling. The problems that in the forming process of the bow-shaped aluminum alloy part, the profile is inaccurate, and the hole position deviates are solved. The outer edge of the part is machined in a numerical control milling mode, the labor intensity is remarkably reduced, the drilling sleeve is adopted for drilling to guarantee the size, and the hole precision is improved.

Description

technical field [0001] The invention belongs to the technical field of sheet metal parts processing of aviation aircraft, and relates to a precise manufacturing method of "bow"-shaped aluminum alloy parts. Background technique [0002] In the aircraft scientific research model project, there is a special structure of the bracket, such as figure 1 As shown, this type of parts is made of 2B06Oδ2.0, the overall shape is "bow", the outer dimension is about 700mmX400mm, the width is unequal, the maximum width is 18mm, and there are 6 φ4.2mm holes on the parts. When assembling such parts, the "bow"-shaped profile needs to be attached to the finished part and ensure that the φ4.2mm is coordinated with the bolt hole on the finished part, so the shape and hole accuracy of the parts are required to be high. The processing process usually used for parts is "straight blanking - brake forming - cutting shape - drilling". The disadvantage of this kind of processing method is that due to...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 刘虹兵李财正吴华东汪海峰张健
Owner SHENYANG AIRCRAFT CORP
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