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Plate forming process and apparatus

A sheet metal forming and feedback device technology, applied in forming tools, instruments, laser welding equipment, etc., can solve the problems of small deformation, high dimensional accuracy, and poor surface quality of laser shock forming, and achieve easy impact forming and low heating temperature , the effect of reducing the output power requirement

Inactive Publication Date: 2007-03-21
JIANGSU UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for large-area deformation of a plate, which overcomes the shortcomings of poor surface quality in laser thermal stress forming and small deformation in laser shock forming. It has a large amount of deformation, high dimensional accuracy, and good surface quality, and can be directly used as a tool for sheet metal forming

Method used

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  • Plate forming process and apparatus

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Embodiment Construction

[0019] The details and working conditions of the specific device proposed by the present invention will be described in detail below in conjunction with FIG. 1 . The device includes a laser heating system, a laser shock system, a control system, a workpiece fixture system, and a measurement feedback system. The laser heating system includes a carbon dioxide laser (16), a light guide (15), two total reflection mirrors (14) (18), and a spot adjustment device (19); the laser shock system includes a neodymium glass laser (6), a light guide (7), two total reflection mirrors (4) (8), light spot adjustment device (2); the workpiece fixture system includes workpiece (11), energy absorbing layer (21) covered on the workpiece surface, energy absorbing layer (23) , workpiece fixture (10), five-axis linkage workbench (2); the control system is composed of a computer (22), a central control processor (1), a carbon dioxide laser controller (17), and a neodymium glass laser controller (5); ...

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Abstract

The plate forming process and apparatus belongs to the field of laser processing technology. The present invention has CO2 laser for pre-heating plate, infrared thermometer for measuring and controlling the plate heating temperature, neodymium glass laser for providing powerful short laser pulse to induce the generation of laser shock wave as the forming force source in processing plate and plate deformation measuring feedback device. The present invention is superior to laser thermal stress forming process, which has inferior formed surface quality, and laser shock forming process, which has small deformation amount, and can form plate directly in relatively great deformation amount, relatively high size precision and relatively high surface quality.

Description

technical field [0001] The invention belongs to the field of laser processing, in particular to a method and device for preheating, softening and impact forming of plates by laser, and is especially suitable for forming high-strength metal plates. Background technique [0002] As the main method of sheet metal deep processing, 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, instrumentation and other production industries. The methods of plastic forming of sheet metal include: die stamping forming, laser thermal stress forming and laser impact forming. The traditional die stamping is to place the metal sheet on the mold, and under the action of the press, an internal force that deforms the sheet is generated inside the sheet. When the internal force reaches a certain level, a certain shape of the part is obtained. Although the operation is simpl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/06B21D37/16B21C51/00B23K26/42B23K26/06B23K26/073G05B13/00G05B15/00B23K26/70
Inventor 张永康张兴权周建忠顾永玉杨超君鲁金忠
Owner JIANGSU UNIV
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