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Aluminum alloy curved part electromagnetic compound forming method and device

A technology of curved surface parts and electromagnetic compounding, applied in the direction of forming tools, metal processing equipment, manufacturing tools, etc., to achieve uniform plastic deformation, improve forming accuracy, and avoid adverse effects

Inactive Publication Date: 2009-12-23
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Electromagnetic composite forming method and device for aluminum alloy curved surface parts

Method used

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  • Aluminum alloy curved part electromagnetic compound forming method and device
  • Aluminum alloy curved part electromagnetic compound forming method and device
  • Aluminum alloy curved part electromagnetic compound forming method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Example 1 Electromagnetic Composite Forming Experiment of Aluminum Alloy Curved Surface Parts

[0038] The experimental material is 1060 aluminum plate, the plate size is 100mm×150mm, and the thickness is 0.4mm, 0.7mm and 0.9mm. exist figure 1 Electromagnetic composite forming is performed on the tooling shown.

[0039] In the experiment, in the first stage, the coil punch 3 presses the aluminum alloy slab into the forming die 1 under the action of the press for pre-forming, and keeps the formed coil shell 3-3 in good contact with the flange edge of the aluminum alloy slab. Contact; in the second stage, adjust the energy storage capacitor and discharge voltage parameters of the electromagnetic forming machine, and discharge and form the aluminum alloy slab under different discharge energies. Forming analysis The amount of springback after the workpiece is taken out of the die, the amount of springback is the difference between the opening angle value of the small end ...

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Abstract

The invention relates to an aluminum alloy curved part electromagnetic compound forming method and device. The method includes that an aluminum alloy plate blank is placed on a die; the energy-storage capacitor of an electromagnetic forming device is charged, and the charging loop is broken when charging voltage reaches forming voltage; under the action of a press machine, a coil punch presses the aluminium alloy plate blank into the die for performing, and the contact of the shell of a forming coil and the flange side of the aluminium alloy plate blank is ensured to be favourable; the electromagnetic forming discharging loop is closed, the energy-storage capacitor discharges to the forming coil by a cable, and the preformed aluminium alloy curved part contacts the die at high speed under the action of electromagnetic force, thus obtaining the required work piece. The forming device comprises a coil punch and a forming die; wherein the coil punch is formed by curing of electromagnetic forming coil and coil shell by high strength insulating resin. The method combines conventional punch forming and uniform pressure electromagnetic forming, solves the problems of large forming resilience, poor precision and difficult mould design, and also overcomes the defect that single electromagnetic forming can be only used in local forming.

Description

technical field [0001] The invention belongs to the field of mechanical engineering, in particular to an electromagnetic composite forming method and device for aluminum alloy curved surface parts. It is mainly used to improve the forming accuracy of aluminum alloy curved surface parts and solve the problem of difficult mold design for aluminum alloy curved surface parts. Background technique [0002] With the development trend of lightweight structures in manufacturing industries such as automobiles and aerospace, the application of high-strength and low-density materials such as aluminum alloys is increasing. However, an important problem in the forming of aluminum alloy sheets is the control of forming accuracy, and the most prominent problem in bending forming is the precise control of springback of bent parts. Because even for the same brand and batch of aluminum alloy plates, the change in performance and the fluctuation of forming process conditions due to the inhomo...

Claims

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Application Information

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IPC IPC(8): B21D22/02B21D37/10
Inventor 黄尚宇孟正华胡建华黄薇李友成孙樊陈石
Owner WUHAN UNIV OF TECH
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