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Method and device for laser pulse and electromagnetic pulse composite forming of metal sheet

An electromagnetic pulse and metal sheet technology is applied in the field of metal sheet laser shock wave and electromagnetic pulse composite forming method and device, which can solve the problems of difficult popularization, high cost, and high energy consumption of equipment, and achieve localization and inhomogeneity. The effect of expanding the deformation area and deformation amount and improving the uniformity of deformation

Inactive Publication Date: 2012-12-19
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, electromagnetic forming still has the following disadvantages: (1) The equipment consumes a lot of energy
At present, the maximum energy storage of foreign equipment is 500kJ, while that of domestic equipment is 40kJ, but it is still far from meeting the needs of processing difficult-to-deform metals or large solid metal workpieces; (2) The energy utilization rate is very low, and energy waste is serious
The utilization rate of equipment energy storage is generally 10% to 20%, and the highest is no more than 40%, which is mainly wasted on magnetic flux leakage and heat generation; (3) The cost is still high and it is not easy to popularize; (4) There are certain limitations in the electromagnetic forming process. Limitation, there are certain requirements for the material and shape of the processed parts
The current electromagnetic sheet forming methods are mostly used for processing small shell-shaped parts. For forming large-scale automobile cover parts and complex curved surface shell-shaped parts, large-scale equipment with high voltage and high energy is required. In addition, the complex and fine structure of the parts is not easy. take shape

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  • Method and device for laser pulse and electromagnetic pulse composite forming of metal sheet
  • Method and device for laser pulse and electromagnetic pulse composite forming of metal sheet
  • Method and device for laser pulse and electromagnetic pulse composite forming of metal sheet

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Embodiment Construction

[0034] Combine below figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 Describe in detail the details and working conditions of the specific device proposed by the present invention.

[0035] Such as figure 1 As shown, the device of the present invention includes: a three-axis numerical control workbench 1, a bottom mold 2, a test piece supporting plate 3, a test piece pressing plate 4, a guide post 5, a flexible film 7 (constraining layer + absorbing layer), and an electromagnetic pulse device 10 , spot adjustment device 12, 45 ° total reflection mirror 13, high-power pulse laser 14, electromagnetic force generation system 19, laser power supply 20, electromagnetic pulse controller 21, computer control system 22; Described electromagnetic pulse device 10 comprises: electromagnetic pulse Coil 9, magnetic collector 8; the electromagnetic force generation system 19 includes: discharge switch 15, charging switch 16, charging device 17, pulse energy storage capacitor ba...

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Abstract

The invention discloses a method and device for laser pulse and electromagnetic pulse composite forming of a metal sheet and relates to the technical field of processing and manufacturing fastening holes. The head part of an energy absorption rod (10) is a conical surface; a high-power pulse laser outputs an annular laser pulse (8) by means of a light spot regulator (15); the annular laser pulse (8) accommodates the tip part of the conical surface on the head part of the energy absorption rod (10) in a hollow part of a laser beam, and meanwhile, the annular laser pulse (8) is acted on the conical surface on the head part of the energy absorption rod (10) to induce plasma (17) to explode and generate impact waves acted on the internal walls of the fastening holes, so that the fastening holes are strengthened. The method and the device are suitable for strengthening the fastening holes with small diameter; the hollow part of the annular laser pulse (8) keeps away from the tip part of the conical surface of the energy absorption rod (10), so that the energy absorption rod (10) is difficult to damage, which is beneficial to continuously working and achieving a good strengthening effect.

Description

technical field [0001] The invention relates to the technical field of sheet metal forming, in particular to a metal sheet laser shock wave and electromagnetic pulse compound forming method and device, which is suitable for high-efficiency, complex and precise forming of large sheet metal, and is also suitable for the fine structure of sheet metal Forming is especially suitable for forming materials that are difficult or impossible to form by conventional methods, such as titanium alloys and magnesium alloys. Background technique [0002] As the main method of sheet metal forming, plastic forming of sheet metal has occupied a very important position in the entire national economy and is widely used in aerospace, shipbuilding, automotive panels, electronics, instruments and other production industries. At present, there are many methods for plastic forming of metal sheets at home and abroad, including stamping, electromagnetic forming, explosive forming, shot peening, laser t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D26/00
Inventor 姜银方张永康钱晓明姜文帆张朝阳顾永玉汪建敏
Owner JIANGSU UNIV
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