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Cold correction method for deformation of aluminum alloy longitudinal beam part

A technology of aluminum alloy and parts, which is applied in aircraft parts, transportation and packaging, etc., can solve the problems that cannot be used to correct the shape of stringer parts, etc., and achieve the effect of wide application range, low forming cost and large shaping ability

Active Publication Date: 2019-08-09
SHENYANG AIRCRAFT CORP
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Problems solved by technology

However, this method is limited by the complexity of the structure and distortion of the longitudinal beam parts, so it cannot be used to correct the shape of the longitudinal beam parts.

Method used

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  • Cold correction method for deformation of aluminum alloy longitudinal beam part
  • Cold correction method for deformation of aluminum alloy longitudinal beam part
  • Cold correction method for deformation of aluminum alloy longitudinal beam part

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0041] Such as Figure 5 As shown in the figure, this part is a key part for connecting fuselage panels, floor beams and docking of different fuselage barrel sections. The structure of the part in the length and width directions is asymmetrical, and the shape of the part is distorted and deformed after machining. The out-of-tolerance rate exceeds 80%, which seriously affects the manufacturing cost and project cycle. The shape correction of this part cannot be completed by the traditional cold correction method.

[0042] A cold correction method for deformation of aluminum alloy longitudinal beam parts, comprising the following steps:

[0043] The first step is to design and manufacture the appearance inspection tooling by means of assembly. The structure of the tooling is as follows: Figure 4 . The tooling is composed of a checker 7, a limit b...

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Abstract

The invention belongs to the technical field of machining, and relates to a cold correction method for the deformation of an aluminum alloy longitudinal beam part. A rapid detection tool for appearance is designed and manufactured in an assembling mode, and a part deformation mode is determined by placing a part on the rapid detection tool for appearance; then a web plate surface of the longitudinal beam part is subjected to double-side opposite spray, and deformation of the part in the length direction is corrected; surfaces of both sides of an edge strip is subjected to double-side oppositespraying, and deformation of the part in the width direction is corrected; and finally whether the corrected part meets the design requirements or not can be evaluated. According to the method, the surface of the part is not damaged, and the performance of the part is not adversely affected; the application range is wide, and the method is not limited by the structure (such as the symmetry of thesection and the length direction, the structural distribution of reinforcing ribs, edge strips and the like) and the external dimension of the part; the method is not limited by the deformation mode of the part and the complex deformation such as single curvature and distortion can be corrected; the shape correction capability is high, and the shape correction cost is low; the correction method and parameters can be constant and specified on the process documentation to guide different operators.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and relates to a cold correction method for deformation of aluminum alloy longitudinal beam parts. Background technique [0002] The aluminum alloy longitudinal beam machined parts of civil aircraft are important connecting structural parts, which are composed of flanges, web surfaces, stiffeners and other structures. The shape is prone to deformation and exceeds the drawings. Commonly used correction methods include manual correction, hydraulic correction and so on. However, this method is limited by the complexity of the structure and distortion of the stringer parts, so it cannot be used to correct the shape of the stringer parts. Contents of the invention [0003] Aiming at the problems existing in the prior art, the present invention provides a cold correction method for the deformation of aluminum alloy longitudinal beam parts, which is not affected by the structure of the...

Claims

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Application Information

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IPC IPC(8): B21D3/00B21D53/92
CPCB21D3/00B21D53/92
Inventor 马丽滨魏巍焦玉坤
Owner SHENYANG AIRCRAFT CORP
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