Laser forming method for metal sheet

A metal sheet and laser forming technology, applied in the field of laser processing and forming, can solve problems such as difficult deformation, difficult realization, and complicated situations

Active Publication Date: 2013-05-22
青岛述诚智能装备股份公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0006] However, in the process of processing, the induced thermal stress must exceed the yield limit of the material before the plate can be deformed, so the plate needs dozens or even hundreds of reciprocating scans, During so many times of heating and scanning, many factors such as heat accumulation, material deformation, and performance changes make it difficult to control the deformation of the material, and it is not easy to realize, especially the continuous bending deformation of the material, which requires multiple reciprocating scanning of the material operations, the situation is more complex

Method used

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  • Laser forming method for metal sheet
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Embodiment

[0022] A 0Cr18Ni9 stainless steel sheet with a thickness of 0.15mm is used as the workpiece to be processed. The length of the sheet is 25mm (the actual part to be processed is about 20mm) and the width is 5mm. The interval between passes was set to 2 mm, and thus a total of 10 passes were scanned, and each pass was reciprocally scanned 10 times. After the surface of the workpiece to be processed is polished with corundum sandpaper to remove foreign matter, the surface is pretreated with black paint, and then the thin plate is pressed between two glass plates. Set the diameter of the laser beam spot to 0.1mm, the power to 22W, and the scanning speed to 18mm, and proceed in the order of scanning from both ends of the thin plate to the center. After scanning, the processed workpiece is left to cool naturally at room temperature, the fixture is removed, and the processed workpiece is taken out for measurement and verification. The measured curvature of the thin plate is about 0.0...

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Abstract

The invention discloses a laser forming method for a metal sheet. According to the laser forming method for the metal sheet, appropriate and unique technological parameters in a laser bending forming method are selected to accurately control the deformation amount of the metal sheet and obtain the metal sheet with continuous bending deformation. The interval between every two adjacent paths is preferably 1.5-2 millimeters, the reciprocating scanning times of each path is preferably 10 times, the diameter of each laser beam spot is 0.1 millimeter, the power is 20-25 watts, the scanning speed is 15-20 millimeters, and the curvature of a finally obtained thin sheet is about 0.05-1 millimeter.

Description

technical field [0001] The invention relates to a laser processing and forming method, in particular to a laser bending and forming method for metal plates. Background technique [0002] The forming process of sheet metal occupies a considerable proportion in aviation, aerospace, automobile, shipbuilding and civil industries. For example, the number of plate forming parts accounts for 1 / 2 of the total number of aircraft parts. According to statistics, more than half of the materials produced in the world are processed into plates. Therefore, improving the corresponding forming technology and manufacturing level is a subject of universal significance. [0003] The core issues of modern sheet metal forming technology are concentrated in the aspects of simplifying design, improving quality, shortening cycle and reducing cost. Traditional forming technology usually needs to manufacture corresponding tools and molds according to the shape of the plate, which not only takes a lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D5/00
Inventor 胡竞之
Owner 青岛述诚智能装备股份公司
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