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Integral Forming Method of Aluminum Alloy Thin-walled Spherical Head

A spherical head and overall forming technology, applied in the field of precision sheet metal processing, can solve the problems of poor integrity of parts, difficulty in controlling the shape accuracy, and high cost, and achieve the effect of improving efficiency, reducing the amount of subsequent processing, and achieving good integrity

Active Publication Date: 2017-07-25
BEIJING HANGXING MACHINERY MFG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical solution of the present invention is to provide an integral forming method of an aluminum alloy thin-walled spherical head, which can overcome the disadvantages of poor integrity of the parts processed in the prior art, difficulty in controlling the shape accuracy, or high cost, and can effectively ensure that the thin-walled aluminum alloy is thin. Precise Forming of Squash Head

Method used

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  • Integral Forming Method of Aluminum Alloy Thin-walled Spherical Head
  • Integral Forming Method of Aluminum Alloy Thin-walled Spherical Head
  • Integral Forming Method of Aluminum Alloy Thin-walled Spherical Head

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specific Embodiment approach

[0023] The specific embodiment is carried out according to the following process steps:

[0024] The first step is to calculate and select the plate: plate thickness = part spherical outer surface area × part thickness / round end cross-sectional area, according to the part size, calculate the part spherical outer surface area = 2πRH = 2π × 337 × 237 = 501831mm 2 , the cross-sectional area of ​​the round end of the spherical cap = π 2 =π×321.8 2 =325163mm 2 . Calculate the required plate thickness through the equal volume method = 501831×1 / 325163 = 1.54mm, select a standard specification plate with similar thickness δ = 1.5mm, and increase the unilateral process margin of 150mm.

[0025] The second step is to design the preformed blank: the outer area of ​​the designed preformed blank is smaller than the outer surface area of ​​the final part, according to when the preformed blank is put into the Figure 4 In the superplastic forming lower die 5 shown, the minimum gap betwee...

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Abstract

The invention provides an integral formation method of an aluminum alloy thin-wall spherical head. The method comprises the following steps: step (1) calculating and selecting a plate material; step (2) designing a pre-forming blank material; step (3) designing and manufacturing a pre-forming mold and performing cold-drawing pre-formation; step (4) designing and manufacturing a super-plastic forming mold and performing super-plastic formation; step (5) cutting off remainders and then performing surface treatment. By adopting a cold-drawing pre-formation and super-plastic formation combined process to form the aluminum alloy thin-wall spherical head, the method disclosed by the invention has the advantages of solving the problem that the dimensional precision and the profile precision of this type of component are hard to control in general punching and machining, improving the surface quality of the component and preventing the problem of control on welding deformation after separate manufacturing; cold-drawing pre-formation is firstly adopted to effectively control partial reduction of the wall thickness so as to play an obvious weight reduction effect; super-plastic formation is adopted subsequently to effectively prevent generation of defects such as rebounding, wrinkling and cracking, so that the requirements on dimensional precision, profile precision and surface quality of the component are guaranteed.

Description

technical field [0001] The invention belongs to the field of precision sheet metal processing, and relates to an integral forming method of an aluminum alloy thin-walled spherical head, which is suitable for forming an aluminum alloy thin-walled spherical head with high requirements on dimension accuracy, profile accuracy and surface quality. Background technique [0002] Due to its excellent performance, aluminum alloys are widely used in aerospace, rail transit, weaponry and other fields. In the field of aerospace, the integration and lightweight of aluminum alloy thin-walled spherical head parts are getting higher and higher, and the requirements for manufacturing precision are getting higher and higher. In the field of sheet metal forming, the common manufacturing methods of aluminum alloy spherical heads mainly include split forming and integral forming. Split-valve forming is to prepare multiple ball petals by cold stamping method, then tailor welding, and finally sha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D22/20B21D26/031B23P15/00
CPCB21D22/201B21D26/031B23P15/00
Inventor 秦中环李保永徐凯刘奇李信
Owner BEIJING HANGXING MACHINERY MFG CO LTD
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