Laser dynamic rotary marking is laser laser engraving on top of the circular workpiece, using synchronized tracking of the rotary processing, under the control of the software, with the circumferential movement of the rotary motor, to complete the marking of the circular workpiece. In the past, the conventional laser marking machine does not have a rotary function, can not meet the processing requirements of some product selection, in order to meet the needs of different workpieces, different angles of the marking needs, equipped with a rotary chuck for marking processing has become the market needs.
Rotary chuck is through the hydraulic, pneumatic or electric way, the use of distribution in the chuck body on the radial movement of the movable jaws, for clamping and positioning of the workpiece functional parts of the machine tool. With the popularization of the use of CNC machine tools, as well as the increasing demand for improving productivity, the use of rotary chucks is becoming more and more widespread.
Figure 1 rotary chuck schematic
As Figure 1 for the laser processing of the rotary chuck schematic, the chuck is usually three-jaw chuck, three-jaw chuck, the biggest advantage is that it can be processed with the chuck automatically concentric, clamping range, fast clamping speed, the use of conventional parts three-jaw chuck clamping efficiency and stability. Laser industry is generally chosen by the electric chuck, by the motor control system and motor drive. Chuck clamping, loosening is through the electrical manipulation box on the switch control motor forward and reverse to achieve, adjust the electrical manipulation box on the regulator knob can adjust the drive voltage, change the motor output torque, and then realize the adjustment of the chuck clamping force, with high speed, high precision, long service life of the use of characteristics.
In the initial stage of laser rotary processing, processing for a fixed angle of rotation, turn a hit, the processing of the text will be divided, according to a certain angle of rotation and then processed, for a single line and can be evenly divided text, to avoid splicing problems, but if the length of the picture file is not the same and the arrangement of the complexity of the way to become, due to the text of the mandatory Angle of the division, but also inevitably bring the problem of splicing, and due to the splicing of the rotating Lower precision, so in the processing can not be complete articulation, will produce obvious splicing marks, and processing efficiency compared to the plane of the processing is generally a substantial reduction in the length of the acceleration and deceleration generated by the rotation of the motor shaft on the overall efficiency has a great impact.
Figure 2 laser rotary processing schematic
Figure 3 plastic bottle rotary processing finished product diagram
As in Figure 2 of the processing mode, the use of three gripping clamps to fix the sample position, so that the laser processing center and the rotary axis to maintain a concentric position, editing the finished drawing file, the use of the software's dynamic rotary marking mode of direct processing, motor control system will drive the rotary axis synchronous rotation, with the processing speed of the vibration mirror and the motor's rotational speed, so that the laser is always in the product's uppermost focal plane of the processing, which can effectively This can effectively ensure the consistency of the processing effect. And laser dynamic rotary marking effect and the level of plane marking is comparable to the level of the figure file connection is smooth, no breakpoints, repetitive split marking, splicing and other issues exist.
As in Figure 3, there is a two-dimensional code of rotary marking, shown in the size of 8mm * 8mm, for this type of curved two-dimensional code marking can also be to ensure the efficiency of simultaneous two-dimensional code to ensure that the quality of the processing, processing of the edges of the neat, clear color contrast, the use of scanning guns or cell phone scanning can be easily identified without obstacles.
Figure 4 static rotary marking vs dynamic rotary marking splicing comparison
Static and dynamic rotary marking to do splicing marks effect comparison, from Figure 4 effect comparison chart can be seen in the static rotary marking has more obvious splicing marks, and due to the splicing position repeated marking, further leading to oxidation and yellowing of the material, and the overall color is not uniform, while the dynamic rotary machining in the rotating synchronous light, very good to circumvent the problem of splicing and yellowing, the color is uniform and neat edges.
Static and dynamic rotary marking to do efficiency comparisons, dynamic rotary marking eliminates the static rotary marking in the processing of the rotary axis pause generated by the acceleration and deceleration process, sustained and rapid light, relative to the static rotary marking to a great extent to improve the overall processing efficiency, especially relative to such more complex workpiece, efficiency gains more obvious.
At present, the laser dynamic rotary marking is widely used in light weight, diameter is not very large cylindrical workpiece arc surface or disc workpiece plane on the continuous pattern of the laser marking, the worktable with 360 ° rotation, can achieve the circumference of the uninterrupted marking, and applies to the fiber optic, ultraviolet, green light and other light sources, can be independently switched. Rotary marking needs for the current laser processing technology has been very easy to realize, and in the marking process quality is getting better and better. Laser dynamic rotary marking in machinery, stationery, medical, electronics industry, automotive manufacturing industry has a wide range of applications.
