A control method, device and system for laser cutting parameters based on temperature field

Abstract

The invention provides a control method, device and system based on laser cutting parameters of a temperature field, and relates to the field of laser cutting technologies. The method includes the steps that cutting zone temperature field distribution data are obtained through an infrared thermography system, and temperature values of all temperature points in the temperature field are determined according to the cutting zone temperature field distribution data; control strategies of the laser cutting parameters are determined according to the temperature values of all temperature points in the temperature field; and the laser cutting parameters are controlled according to the control strategies of the laser cutting parameters, so that a laser cutting device cuts a to-be-cut workpiece according to the laser cutting parameters. By means of the control method, device and system, the problems that the current laser cutting parameters only depend on manual setting by a laser cutting operator according to experience, so that differences of all points in a cutting path are large, the consistency of the notch quality is difficult to achieve, and the workpiece is prone to being poor in quality or being scrapped can be solved.

Description

technical field [0001] The invention relates to the technical field of laser cutting, in particular to a control method, device and system for laser cutting parameters based on a temperature field. Background technique [0002] At present, laser cutting uses a focused high-power-density laser beam to irradiate the workpiece, so that the material at the irradiated place is melted, gasified, ablated or reached the ignition point, and at the same time, the molten material is blown away by the high-speed airflow coaxial with the beam, thereby A thermal cutting method that realizes cutting the workpiece. Laser cutting technology has been widely used in the field of workpiece cutting because of its fast cutting speed, small heat-affected zone, small deformation of the workpiece, no inertia of the beam, high-speed cutting, and good verticality of the slit edge. It has become one of the commonly used methods for processing various metal and non-metal parts. [0003] In the existin...

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Problems solved by technology

[0005] Embodiments of the present invention provide a temperature field-based laser cutting parameter control method, device and system to solve the problem that the current laser cutting parameters only rely on manual adjustments by laser cutting operators based on experience, resulting in large differences in various points in the cutting path , it is difficult to achieve the consistency of the incision quality, and it is easy to make the workpiece quality poor or scrapped

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