Laser groove cutting method and laser cutting machine

Abstract

The invention discloses a laser groove cutting method comprises the steps that S1, the laser cutting machine obtains groove information, initial focal point information, initial distance information and initial auxiliary gas pressure information uploaded by a user; S2, a controller controls the laser head to move according to the groove information to conduct cutting; S3, real-time included angleinformation and real-time distance information are obtained through the controller, wherein the included angle is the included angle between the laser head and the normal, and the distance is the distance between the laser head and a workpiece to be cut; S4, according to the real-time included angle information and the initial auxiliary gas pressure information, real-time auxiliary gas pressure isadjusted, according to the real-time included angle information, real-time distance information and initial focal point information, a real-time focal point is adjusted, and then laser groove cuttingof the workpiece to be cut is completed. By the adoption of the laser groove cutting method, the consistency between a straight opening face and a groove face of a groove cutting product can be improved, and the yield of products is greatly improved.

Description

technical field [0001] The invention relates to the technical field of laser cutting, in particular to a laser groove cutting method and a laser cutting machine. Background technique [0002] Laser cutting refers to the use of a laser beam to irradiate the surface of the workpiece to be cut, so that the material of the workpiece is melted rapidly, and at the same time, the molten material is blown off with the help of an auxiliary gas coaxial with the beam to form an incision, thereby cutting the workpiece. Since the energy of the laser cutter is very concentrated, only a small amount of heat is transferred to other parts of the blank, causing little or no deformation, and the laser can be used to cut the blank of complex shape very accurately, and the cut blank does not have to be reworked. for further processing. [0003] There are many parameters that affect the quality of laser cutting, such as the nature of the material itself (thickness, material, etc.); laser cutting...

AI Technical Summary

Problems solved by technology

However, it does not discuss the changes of other cutting parameters during the cutting process, such as focus position, auxiliary gas pressure and other parameters.

At present, the common laser bevel cutting adopts the same air pressure control and focus control method, and the cut surface and bevel surface of the cut product have different effects, poor product consistency, and low yield.

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