Laser marking method and device

Abstract

The invention relates to a laser marking method and device, and the method comprises the steps: adjusting a first coordinate system of a marking object to be matched with a second coordinate system of a marking head, enabling the central position of the marking object to correspond to the marking center of the marking head, dividing the marking object into a first unit to an Mth unit, moving the marking object, the marking method comprises the following steps: moving a marking object to enable a first unit to correspond to the marking center of a marking head for marking, moving the marking object again after marking of the first unit is completed, enabling a next unit to be aligned with the marking center of the marking head to complete marking until marking of an Mth unit is completed, and moving the marking object for multiple times to enable each unit to move to the marking center, and when the curvature change of a marked object is large, the situation that the marking effect is affected due to a machining blind area caused by light blocking is avoided, the problem that the pattern is seriously deformed due to the fact that the whole surface is machined at a time can be solved, and therefore the marking precision of the laser marking machine is improved.

Description

technical field [0001] The invention relates to the technical field of laser processing, in particular to a laser marking method and device. Background technique [0002] 3D laser marking is a laser surface depression processing method, which uses a high-energy-density laser to locally irradiate the workpiece to vaporize the surface material or undergo a chemical reaction of color change, thereby leaving a permanent mark. Laser marking can mark various characters, symbols and patterns, etc., and the character size can even reach the order of microns. The laser beam used for laser marking is generated by a laser, and after a series of optical transmission and processing, the beam is finally focused by an optical lens, and then the focused high-energy beam is deflected to the designated position on the surface of the object to be processed, forming a permanent concave shape. trace. [0003] However, there are still many limitations and defects in the 3D laser marking method ...

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a solution to the problems that the marking pattern is seriously deformed and the marking area has light blocking phenomenon when the traditional laser marking system processes the curved surface with large curvature changes, which affects the marking accuracy. The laser marking method for the above problems, this method divides the marking object into multiple units, and moves each unit to the marking center for marking, thereby reducing the risk of serious deformation of the marking pattern and poor marking accuracy

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