Sheet metal laser high-precision hot-bending forming

A metal plate and thermal bending technology, which is applied in laser welding equipment, metal processing equipment, welding equipment, etc., can solve the problem of different bending angles of heating wire plates, and achieve the effect of improving forming accuracy and large application prospects

Inactive Publication Date: 2009-10-21
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0004] In order to overcome the problem of different bending angles of the sheet metal along the heating line in the laser thermoforming of the metal sheet, the present invention provides a thermally combined laser thermoforming method for the sheet metal, which reduces the change of the bending angle of the sheet along the heating line and improves the forming accuracy of the sheet metal

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  • Sheet metal laser high-precision hot-bending forming
  • Sheet metal laser high-precision hot-bending forming

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Embodiment Construction

[0010] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings. The high-precision laser thermal bending forming device is composed of the control system (1), CO 2 Laser (2), mirror (3), focusing mirror (4), pressure output system (9), fixture (8), three-dimensional numerical control table (7) and formed workpiece (6), such as figure 1 shown.

[0011] The specific forming steps of metal sheet are as follows:

[0012] 1. Clean the surface of the metal plate with acetone;

[0013] 2. Evenly coat a layer of laser adsorption coating on the surface of the metal plate for blackening treatment;

[0014] 3. The formed workpiece (6) is placed on the three-dimensional numerical control table (7), and one end of the formed workpiece (6) is fixed with a clamp (8), and the positions of the laser beam (5) and the pressure applying device (9) are fixed;

[0015] 4. The laser beam is emitted by the laser (2), and a beam with a ce...

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Abstract

The invention is a method for improving sheet metal laser hot-bending forming precision. A forming workpiece is fixed on a three-dimensional numerical control platform, continuous laser beams heat the surface of sheet metal along given motion track at a certain scanning speed, different pressures are applied at the distance of about 1 to3 facula diameters behind the laser beams, smaller pressure is applied at the position of greater bending angle, greater pressure is applied at the position of smaller bending angle, so as to reduce the change of bending angle along the heated sheet formed sheet and improving the forming precision of the forming workpiece. The method is applied to high-rigidness and fragility difficultly-deformed sheet high-precision forming, and has broader application prospect in the fields of aerospace, medicine and microelectronics.

Description

technical field [0001] The invention relates to a method for realizing high-precision bending and forming of metal plates by using laser beams, which belongs to the technical field of mechanical manufacturing and can be applied to the dieless rapid forming of metal plates in small batches or difficult-to-form materials. technical background [0002] As a new sheet metal forming process, laser thermoforming technology introduces laser technology into plastic forming technology, uses high-energy laser beams to locally heat the surface of materials, induces uneven thermal stress, and causes plastic deformation of materials to obtain the desired target shape. Compared with cold forming processes such as traditional plate stamping forming, laser thermoforming does not require molds and external forces, so it is flexible and has a short production cycle. It is especially suitable for the processing of parts with many varieties and small batches; , this technology is especially su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/00B21D5/00B23K26/70
Inventor 石永军刘衍聪伊鹏
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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