Pulse laser three-dimensional engraving method

Abstract

The invention discloses a pulse laser three-dimensional engraving method. According to the method, the engraving depth range is large, pattern lines are clear, three-dimensional impression is strong, and the engraving time can be substantially shortened or the engraving precision can be substantially improved. The method includes the steps that firstly, according to the characteristic and precision requirement of an engraved object, a three-dimensional model of the engraved object is subjected to disperse slice layering through combination with the characteristics of a laser device in use; secondly, a corresponding method for controlling laser output parameters is selected so that engraving, of different depths, in the same layer can be achieved; thirdly, data in the first step and the second step are converted into electric signals capable of being recognized by the laser device through a computer, and therefore output of the laser device can be controlled, and engraving is completed layer by layer; and in the first step, the engraving depth of the same layer is represented through a gray value after layering is performed, different gray values represent different engraving depths, two-dimensional lattice coordinates are used for representing coordinates of corresponding engraving points in the same layer, the values of the coordinates are the gray values, and the gray values correspond to the engraving depths of the points.

Description

technical field [0001] The invention belongs to the technical field of laser engraving, and in particular relates to a fiber laser three-dimensional engraving method, which combines layered engraving with intra-layer fine engraving of different depths engraved in the same layer by controlling parameters to achieve fast, Laser 3D engraving with high precision, strong three-dimensional effect and wide application. Background technique [0002] Laser engraving is to use the physical denaturation of instantaneous melting and gasification of processing materials under laser irradiation to achieve the purpose of processing. At present, the application of laser engraving technology has been relatively mature, and it has been widely used in many fields such as advertising decoration, printing and packaging, leather clothing, model making, etc., and has achieved huge economic benefits. [0003] Compared with traditional engraving techniques, laser engraving has the following advanta...

AI Technical Summary

Problems solved by technology

[0011] The accuracy is affected by the thickness of the layer. If the thickness is too large, a step effect will occur when engraving the inclined plane, which will affect the surface quality; if the value is too small, the number of engraving layers will be increased and the processing efficiency will be reduced.

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