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A laser high-precision machining method for copper-steel laminates based on pre-cutting

A processing method and pre-cutting technology, used in metal processing equipment, laser welding equipment, manufacturing tools, etc., can solve the problems of low laser absorption rate, damage to the surrounding properties of the slit, poor cutting quality, etc., to improve the laser absorption rate. Effect

Inactive Publication Date: 2021-03-26
DALIAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of low laser absorption rate in processing copper-steel laminates, destruction of properties around the kerf, low cutting efficiency and poor cutting quality, the present invention proposes a method for laser pre-cutting of copper-steel laminates, which is a method of using near When the infrared wavelength fiber laser cuts the laminated board with high reflectivity copper, through the input of the laser energy density and the control of the cutting speed in the laser cutting process, oxygen is used as the auxiliary gas for pre-cutting, so that the surface of the material is shallow. The layer is melted to change the morphology and composition of the cladding copper on the surface of the material, and based on this, the laser cutting of the laminate is carried out

Method used

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  • A laser high-precision machining method for copper-steel laminates based on pre-cutting
  • A laser high-precision machining method for copper-steel laminates based on pre-cutting
  • A laser high-precision machining method for copper-steel laminates based on pre-cutting

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Embodiment

[0035] Example: laser cutting of pre-cut copper-steel laminates

[0036] (1) Place the copper-steel laminate 3 to be processed flat on the laser workbench, reasonably adjust the position of the plate on the workbench according to the workpiece processing requirements, and compact the edge of the plate to ensure that the plate is flat.

[0037] (2) Install a single-layer air blowing nozzle 4 under the laser head, and adopt coaxial air blowing measures; use an adjustment wrench to set the defocus amount to 0, so that the light spot is focused on the surface of the material, the diameter of the nozzle 4 is 2mm, set the nozzle The distance from the workpiece surface is 0.5mm, and the working mode of the nozzle is follow-up; import the two-dimensional drawing of the workpiece into the fiber laser computer, open the drawing with visual numerical control software, set the cutting frequency to 5000Hz, the peak current to 100%, and open the laser shutter.

[0038] (3) Pre-cutting metho...

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Abstract

The invention belongs to the technical field of efficient, high-precision and high-quality laser cutting machining of laminated boards, and relates to a copper-steel laminated board laser high-precision machining method based on pre-cutting. When optical fiber lasers are utilized for cutting a laminated board with a coverage layer being high-reflective-rate red copper, through laser cutting process laser energy density input and cutting speed control, oxygen serves as auxiliary gas for laser pre-cutting, shallow-layer melting happens to the material surface, the copper surface feature and components of the coverage layer of the material surface change, and then laminated board laser cutting work is conducted on the basis. According to the copper-steel laminated board laser high-precision machining method based on pre-cutting, the laminated board laser cutting technology process is simplified, machining precision and the material surface property are guaranteed, and the requirement forlaminated board workpiece laser high-precision machining is met.

Description

technical field [0001] The invention belongs to the technical field of high-efficiency, high-precision and high-quality laser cutting processing of laminated boards, and relates to a laser high-precision processing method for copper-steel laminated boards based on pre-cutting, which is a laser pre-cutting method for copper-steel laminated boards The application of laser high-precision machining technology for seam array parts. Background technique [0002] Laser cutting is a process in which a high-power-density laser beam is used to irradiate the surface of a material, and the material is removed in the form of melting or vaporization. Modern laser cutting technology is a high-tech combination of lasers, computers, numerical control systems and precision machine tools, which makes laser cutting have high precision, high efficiency, low damage, and easy control. It has become the most widely used technology in laser processing. Copper-steel laminates are prepared by cold-ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/38B23K26/12B23K26/70B23K26/073
CPCB23K26/073B23K26/12B23K26/38B23K26/702
Inventor 王续跃王坤
Owner DALIAN UNIV OF TECH
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