A push-bending forming device and method for continuous reverse-bending aluminum alloy pipe fittings

A technology for aluminum alloy and pipe fittings, which is applied in the field of push-bending forming devices for continuous reverse-bending aluminum alloy pipe fittings, can solve problems such as cross-sectional distortion of the second bending section of continuous reverse-bending, reduce the number of tests, suppress cross-sectional distortion, and shorten the The effect of the production cycle

Active Publication Date: 2017-10-27
淮安航空产业研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the superimposed effect of the two pressures, the cross-sectional distortion of the second bending section of the continuous reverse bending pipe fitting is the biggest bottleneck problem of the process

Method used

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  • A push-bending forming device and method for continuous reverse-bending aluminum alloy pipe fittings
  • A push-bending forming device and method for continuous reverse-bending aluminum alloy pipe fittings
  • A push-bending forming device and method for continuous reverse-bending aluminum alloy pipe fittings

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Embodiment 1

[0046] The continuous reverse bending pipe fitting in this embodiment is a certain type of continuous reverse bending elbow, the material is 5A02 aluminum alloy, the outer diameter of the tube blank is 20mm, the wall thickness is 1mm, the length is 130mm, and the radius of the first and second bending sections of the continuous reverse bending is 25mm. , the angle between two straight pipelines is 15°. The entire pushing and bending process is carried out on a 100-ton press, and the pressing speed of the table is about 8mm / s. The finite element simulation results and push bending test results of continuous reverse bending aluminum alloy pipe fittings are as follows: Figure 5 As shown in the figure, it can be seen that both of them have formed a continuous curved geometric feature, and the cross-sectional distortion has been effectively suppressed to meet the product requirements.

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Abstract

The object of the present invention is to provide a push-bending forming device and method for continuous reverse-bending aluminum alloy pipe fittings. The technical solution adopted in the present invention is a push-bending forming device for continuous reverse-bending aluminum alloy pipe fittings, which includes a pressing die, a forming die, a forming die locking device, a mandrel, a mandrel support frame and a lower die holder. The pressing die is provided with an upper punch, the forming die includes two symmetrical and detachable forming dies, the forming die is provided with a cavity with continuous reverse bending geometry, and the core mold supporting frame A mandrel supporting frame is provided, one end of the mandrel is connected with the mandrel supporting frame, and the other end is set in the cavity of the continuous inversion geometric feature of the forming die; the forming die locking device can be set on the forming die It is locked outside, and the lower die holder is provided with a lower die holder groove that matches the forming die and the mandrel support frame.

Description

technical field [0001] The invention belongs to the technical field of bending forming of pipe fittings, and in particular relates to a push bending forming device and method of continuously reverse-bending aluminum alloy pipe fittings. Background technique [0002] Tube bending forming technology is widely used in the fields of aviation, aerospace and thermal power. As the connecting parts of the liquid and gas pressure bearing and transmission pipelines on various aircraft, the pipe fittings are directly related to the operation safety of the equipment. With the development of industrial technology, the requirements for the mechanical properties of pipe fittings (especially strength and toughness) are increasing. . Continuous reverse bending pipe fittings refer to direct tangential connection of circular arcs with two bending radii and opposite curvature directions "positive and negative". This type of pipe fittings is widely used in aviation and aerospace vehicles. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D9/12
Inventor 贾震韩志仁刘宝明戚兴江
Owner 淮安航空产业研究院有限公司
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