The 3D dynamic focus laser marking machine is no longer limited to the plane of the surface shape of the processed object, and can be extended to the three-dimensional surface to achieve high-efficiency laser graphic marking of three-dimensional curved objects. Compared with traditional two-dimensional laser marking machine, 3D dynamic focus laser marking machine has the following advantages:
1. Variable focal length to realize three-dimensional marking
Because 3D marking can quickly change the laser focal length and laser beam position, it becomes possible to mark curved surfaces that cannot be achieved in 2D. After using 3D marking, the cylindrical marking in the light projection range can be completed at one time, which greatly improves the processing efficiency. Furthermore, the surface shape of many parts of industrial products is not only flat, and 3D marking is easier to achieve.
2. More suitable for deep carving
Traditional 2D marking has inherent defects in deep engraving of the object surface. As the laser focus moves up during the engraving process, the laser energy acting on the actual surface of the object will drop sharply, which seriously affects the effect and efficiency of deep engraving.
For the traditional deep engraving method, the lifting table is moved to a certain height at regular intervals during the engraving process to ensure that the laser surface is well focused. 3D marking for deep engraving processing does not have the above problems, which not only guarantees the effect, but also improves the efficiency, and at the same time saves the cost of the electric lifting table.
3. Larger range and finer light effects
3D marking can be divided into front focus and back focus. When the front focus mode is used, the main purpose is to achieve a larger marking range. Generally, a larger X, Y axis deflection lens is used, which can allow the incident laser spot to be more Larger, a smaller focused spot is obtained, and the energy density is higher; thereby meeting the requirements of a larger area.
4. In the same plane, black and white marking can be realized, and even multi-color marking can be achieved, with richer effects
Surface blackening, such as anodized aluminum, usually uses higher-frequency pulses at appropriate energy to mark with a certain defocus. The defocus distance significantly affects the energy distribution and color effect of the laser on the surface of the material.
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