Linear light spot laser bend forming method of metal sheet

A metal sheet, bending forming technology, applied in laser welding equipment, metal processing equipment, heat treatment process control and other directions, to achieve the effect of large bending angle, short bending time and low cost

Inactive Publication Date: 2019-10-11
DALIAN UNIV OF TECH
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Problems solved by technology

[0006] Aiming at the problem of uneven temperature field distribution on the bending line and warping deformation caused by the moving heat source of the metal thin plate point spot in the bending process, the present invention uses a multi-mode laser scanning rotating mirror or a single piezoelectric deformable mirror to convert the point spot of the laser Gaussian distribution It is converted into a uniformly distributed linear spot and loaded on the bending line area at the same time to bend and shape the metal sheet, so that the temperature field on the bending line of the metal sheet is evenly distributed, so as to reduce warping deformation, improve the consistency of bending angle, and improve bending purpose of efficiency

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  • Linear light spot laser bend forming method of metal sheet
  • Linear light spot laser bend forming method of metal sheet
  • Linear light spot laser bend forming method of metal sheet

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.

[0022] A method for laser bending forming of a linear spot of a thin metal plate according to the present invention, the principle of laser bending forming of a linear spot of a rectangular plate and a concentric circular arc line spot of a fan-shaped plate is respectively as follows figure 1 and figure 2 shown.

[0023] Specific steps are as follows:

[0024] Step 1: Workpiece preparation: According to the size and technical requirements, process a thin metal plate of the required specification, with a thickness of 1mm-2mm; for the rectangular plate 2, the length L is 40mm-120mm, and the width W is 30mm-100mm; for the fan-shaped plate 10 , the radius R of the outer circle is 50mm-200mm, the central angle n is 30°-60°; the plate thickness is 1mm-2mm.

[0025] Step 2: Line-type spot setting: For the stra...

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Abstract

The invention belongs to the technical field of efficient, high-precision and high-performance laser bend forming of metal sheets and relates to a linear light spot laser bend forming method of a metal sheet. A multi-mode laser scanning rotating mirror or a single piezoelectric deformable mirror is used for converting Gaussian distribution type point light spots of a laser into evenly distributedlinear light spots, and meanwhile the laser is loaded on a bend line area to conduct bend formation on the metal sheet; and in this way, a temperature field on the bend line of the metal sheet is evenly distributed, and the purposes of reducing warping deformation, improving bend angle consistency and improving bend efficiency are achieved.

Description

technical field [0001] The invention belongs to the technical field of high-efficiency, high-precision and high-performance laser bending forming of metal plates, and relates to a laser bending forming method of a linear spot of a metal sheet, which is a laser bending method in which a line-shaped spot is heated simultaneously on a bending line of a metal sheet Forming method. Background technique [0002] Laser bending forming is a flexible, moldless, force-free and non-contact rapid prototyping technology, which is easy to realize automatic processing. The existing metal plate laser bending technology generally belongs to the point spot moving heat source, that is, the linear scanning sequential heating bending technology, the free end of the plate is warped and deformed due to the heat accumulation of the moving heat source and the influence of the boundary conditions of the plate. In high cases, this amount of deformation may cause major quality problems. According to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D31/00
CPCB21D31/00B21D11/20C21D8/0294C21D11/005B21D5/00B21D5/008B21D11/203B23K26/02B23K26/073B23K26/08B23K26/123B23K26/035B23K26/062B23K26/064B23K26/0821
Inventor 王续跃李紫慧李承航
Owner DALIAN UNIV OF TECH
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