The basic principle of laser deburring technology is to use the characteristics of high intensity, high energy density, strong focusing and good directionality of laser to focus the laser beam into different diameter facula from the laser beam through the optical device to scan the burrs on the parts, so as to melt and vaporize the burrs, and finally remove the burrs, which has high efficiency and applicability Advantages such as wide coverage.In the process of metal processing, there are various kinds of irregular metal parts such as sharp corners and burrs at the transition of workpiece surface. With the progress of society and the gradual improvement of industrialization and automation level, customers have higher and higher requirements for the manufacturing accuracy and quality of products, and the conditions for product service are more and more harsh.The existence of burr not only affects the progress of parts, but also affects the reliability of the whole machine, which will cause the failure of mechanical products. Therefore, deburring has become a key process in the process of parts processing.

In order to solve the problem of deburring, various deburring methods have emerged, and deburring technology has developed from early manual and mechanical operation to automation.At present, the common deburring methods include roller grinding, high temperature deburring, mechanical brushing deburring, extrusion honing deburring, magnetic grinding, water jet deburring, etc.In recent years, with the rapid development of laser technology, and due to the advantages of non-contact, green and environmental protection, laser deburring has been increasingly widely used.

The following problems exist in the existing laser deburring technology:First of all, in the process of laser deburring, it is inevitable that the workpiece itself will be scanned, and the edge of the actual workpiece will be oxidized to varying degrees by laser, resulting in the deterioration of the corrosion resistance and wear resistance of the workpiece surface. Finally, in order to get a better deburring effect, the direction of the required shielding gas will be different due to the location of the burr.

At the same time, due to the size of the burr itself, when cutting a large burr, it often needs a large power density, that is, a large power and a small spot. However, when using this technology to cut a small burr, there will be over burning at the small burr, and the heat affected area is large;When cutting small burr, the power density is often small, that is, small power and large spot. When using this process to remove large burr, there will be insufficient melting at the large burr, and then secondary burr will be formed.