A 3D laser marking method applied to the boundary of marking objects

Abstract

The invention discloses a 3D laser marking method applied to the marked object boundary. According to the 3D laser marking method, a laser, a focusing lens set, a galvanometer and a control system are involved. The control system controls the positions of laser focuses in the Z-axis direction of a marked object by controlling the focusing lens set. The 3D laser marking method comprises the following steps that a 3D model of the marked object is input; a virtual marking surface is established; after the 3D model of the marked object is input, the virtual marking surface extends out of the boundary of the marked object; a marking pattern is input; the pattern is attached; the marked object is placed; the position relation between the pattern and the 3D model is read; and the marked object is marked. According to the 3D laser marking method applied to the marked object boundary, the virtual marking surface is established by extending out of the boundary of the marked object, the pattern is directly marked to the virtual marking surface when marking is conducted on the boundary and out of the boundary, instantaneous large-distance jumping of a Z-axis cursor is effectively avoided, damage to an adjustment driver is reduced, and the service life of the adjustment driver is prolonged.

Description

Technical field [0001] The invention relates to the field of 3D laser marking, in particular to a 3D laser marking method applied to the boundary of a marking object. 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 a variety of characters, symbols and patterns, etc., and the size of the characters can even reach the order of microns. The laser beam used for laser marking is generated by a laser. 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 a designated position on the surface of the object to be processed, forming a permanent depression trace. [0003] The 3D laser marking machine adopts an advanced pre-convergence...

AI Technical Summary

Problems solved by technology

[0004] Although 3D laser marking has been realized, it still has certain defects. For example, in the process of 3D marking, if the marking pattern is attached to the boundary of the marking object, when the marking reaches the boundary of the marking object due to The pasting position of the pattern cannot be controlled very accurately, so many times the marking machine will be out of the boundary, which will cause the Z-axis cursor to jump a large distance instantaneously, resulting in the Z-axis adjustment drive part that controls the Z-axis focus The instantaneous movement of the drive device is relatively large. If things go on like this, the Z-axis adjustment drive part is easily damaged, which greatly reduces its service life. Therefore, this technical problem needs to be improved

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