Bulk-heating sheet laser pressing method and device

A technology of laser stamping and overall heating, which is applied in laser welding equipment, metal processing equipment, manufacturing tools, etc. It can solve the problems of high equipment investment, complex forming device, and no blank holder, and achieve fast forming speed and high heating temperature. Easy to control, easy to control the effect of heating depth

Inactive Publication Date: 2008-12-31
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention uses two lasers to emit two laser beams with different functions, the forming device is complex, and the equipment

Method used

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  • Bulk-heating sheet laser pressing method and device
  • Bulk-heating sheet laser pressing method and device
  • Bulk-heating sheet laser pressing method and device

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Embodiment Construction

[0025] The technical details and implementation of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] figure 1 It is a schematic diagram of the forming device of the present invention. First, the surface of the plate 7 is coated with a protective layer 5. The protective layer 5 is made of black paint, graphite or metal coating, with a thickness of 10-100 μm. The function of the protective layer 5 is to generate plasma under laser irradiation and protect the plate from ablation; The protective layer 5 is covered with a constrained layer 4. The constrained layer 4 is made of quartz glass with a thickness of 1-3mm. The constrained layer is almost completely transparent to the laser beam 3, so as to reduce the energy loss of the laser beam 3 and prevent the constrained layer from being burned; Clamp the blank holder 6, the constraining layer 4, the plate 7 coated with the protective layer 5, and the die 8 in the center,...

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PUM

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Abstract

The invention relates to a plate laser stamping method with an integral heating function and a special device. In the method, ceramics is taken as a female die and a clamping ring; the female die, the clamping ring and the plate are arranged in an electrifying coil, the forming property of the plate is strengthened by heating, and then the plate is irradiated by short pulsed laser with energy density greater than the ignition threshold of the material and is shocked by the shock force of plasma produced by the interaction between the laser and the material to lead to the plastic deformation of the plate under the combined action of the rigid female die. The method belongs to a high-strain rate forming method of rapid forming speed, and can form materials which are hard to be deformed at a normal temperature; the method is especially suitable for deep drawing and bulging of small parts of thin plates and can be applied to the manufacturing field of the structural parts of micro electromechanical system.

Description

technical field [0001] The invention belongs to the field of advanced manufacturing, and in particular relates to a pulse laser stamping forming method with integral heating for thin plates and a device for realizing the method. Background technique [0002] Stamping of sheet metal is usually done with the aid of punches and dies. In 2007, the Chinese patent document CN101020276A disclosed the invention patent of Zhang Yongkang of Jiangsu University "Precision Forming Method of Sheet Half Mold Based on Single Impact of Large Spot New technology of plastic forming. This patent uses a beam of pulsed laser to irradiate the absorbing protective film on the surface of the plate, making it vaporized and ionized to generate plasma, which further absorbs laser energy and explodes. Under the confinement of the confinement layer, the exploding plasma The shock wave pressure facing the surface of the plate is generated, and the pressure causes the plate to undergo plastic deformation,...

Claims

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Application Information

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IPC IPC(8): B23K26/18B23K26/12B23K26/42B21D26/00
Inventor 季忠刘韧张明浩王巍刘晓军林乐嘉
Owner SHANDONG UNIV
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