Laser marking production process is a widely used new technology. It is a process of scanning the target surface with a laser beam with appropriate energy density and converging on the surface of the workpiece to make the material undergo physical or chemical changes, form traces on the surface, and form marks. It has many advantages, such as wide application range, fast marking speed, stable performance, high quality, low operation cost, low environmental pollution, easy to use computer control, and has become one of the important application fields of laser.
The introduction of dynamic focusing technology has successfully expanded the size limit of traditional laser galvanometer processing, and promoted galvanometer processing from two-dimensional plane processing to three-dimensional surface application scenarios. Through dynamic focus control, it can be easily realized: the processing of two-dimensional plane in super-large format (max.2000mm * infinite length), and the marking of 3D surface, step, cone, slope and other workpiece surfaces without distortion.
Here are some common application scenarios of dynamic focus system:
1、 Laser relief
Laser relief technology is earlier than additive manufacturing, and is popular in jewelry processing, mold carving and coinage industries. Laser relief is a typical laser material reduction manufacturing technology. This technology is to remove a complete piece of material layer by layer by laser to achieve three-dimensional laser carving.
Compared with traditional machining methods such as tool carving and electric discharge, laser embossing technology is directly three-dimensional digital modeling, and laser cutting processing is controlled by dynamic focusing system to achieve WYSIWYG. Laser processing has high precision and efficiency, no residual mechanical stress, and can achieve smaller size microengraving. It is widely used in the field of precision processing.
2、 Additive manufacturing in 3D printing area
With the continuous popularization of additive manufacturing technology, SLS technology has become increasingly popular in the application fields of 3C products' hand-run research and development, medical support and bone repair. SLM process is widely used in the design of key components and mold industry of aerospace.
Through the introduction of dynamic focusing technology, SLM and SLS processes have greatly optimized the processing size, light spot and software control switching of single-head printers, effectively improving the processing efficiency and material technology modulation.
As the leader of the industrial laser 3D dynamic focusing system, Fraktec has helped a number of excellent 3D printing equipment companies in China to implement the single-head, double-head and four-head dynamic focusing collaborative control printing scheme, effectively ensuring the demand of many companies for the localization of core components and facilitating industrialization.
3、 Laser engraving for interior and exterior decoration of automobile
With the popularity of new energy vehicles, the promotion of vehicle interaction system and comfort has increasingly become the primary indicator of vehicle selection.
In automobile manufacturing, laser is boldly used to hollow out the interior and exterior decoration, rendering various atmospheres and personalized appearance. At the same time, this manufacturing process shortens the manufacturing cycle of parts and greatly reduces the manufacturing cost. Features of interior and exterior trim parts of new energy vehicles: integrated large size, complex surface modeling.
Using laser dynamic focusing technology, the processing process can be realized: one-time laser transparent carving of complex surfaces; Direct production of finished products, less production processes; The pattern can be customized and highly personalized.
4、 Laser scanning welding
In the early stage of laser scanning welding technology, the 2D galvanometer was combined with the manipulator, and the flexible movement of the manipulator with multiple degrees of freedom was used to realize all spot welding in the processing area under a fixed focal length. With the continuous improvement of intelligence and automation, laser scanning welding technology is used more and more widely in the industry. It poses a greater challenge to the fixed-focus laser scanning welding system equipment combined with the manipulator.
Through the introduction of dynamic focusing technology, the ultra-large range high-speed integrated forming welding of complex curved parts can be realized, which greatly reduces the positioning time of the manipulator and the beat time in production. At the same time, the dynamic focus system can quickly adjust the focus at different heights, reducing the positioning error caused by the frequent start and stop of the manipulator. It makes the efficiency and precision higher, and it is easy to realize assembly line production.
Postscript
Laser has changed from a tool to an innovative tool. The dynamic focusing system with technological connotation ranks among the meritorious. The teams and enterprises specialized in developing the dynamic focusing system are given more expectations. Based on the strategy of taking the leader of industrial laser 3D dynamic focusing system as the leader, Philiptec deepens the application technology of dynamic focusing system, and has successively launched the front focusing dynamic focusing system based on the laser output beam, the rear focusing dynamic focusing system and the flexible dynamic focusing unit DFM (Dynamic Focus Module).
In the future, Philiptec will continue to strengthen cooperation with equipment integrators, take more actions to achieve the complete implementation of processing technology and process verification of key indicators, and provide more industry integrators with complete closed-loop equipment process plans.
Source: Philiptec