Fully automatic fiber cutting machine increases the energy density of the laser

When the platform group automatic fiber cutting machine is working, the operator must stand on the side of the cutting direction of the tool and the grinding wheel to prevent the tool, workpiece, and chips from collapsing and splashing and hurting people, and must stay away from the rotating parts and the range of the ram. The cutting and feeding of the grinding wheel must be carried out slowly and at an even speed, and the force must be uniform and not too strong. The abrasive wheel cutting machine is strictly prohibited from cutting soft materials. When clamping large workpieces, the crane should be operated correctly. The workpiece hanging laser has energy density. The actual cutting effect depends on the laser energy density acting on the surface of the workpiece. In order to be able to perform a group of fully automatic fiber cutting machine well, the energy density of the laser must be further increased. There are two methods: one is to increase the laser output power of the laser, the other is to further narrow the laser beam emitted by the laser or adjust the laser beam pattern. This requires an optical system to focus the cutting head assembly beam expander as shown in the figure below Half-mirror YAG laser full-reflection laser collimation; pictures of the whole machine: open and closed; part of the machine control panel; machine performance; 2. cutting process introduction; such as femtosecond group automatic fiber cutting machine for any material It belongs to vaporization cutting, or continuous group automatic fiber cutting machine, some materials with low vaporization temperature, such as wood, carbon and some plastics. ; Oxygen-free melting and cutting. When the automatic fiber cutting machine is a group of materials, if the auxiliary gas blown is an inert gas, the molten material will not come into contact with the oxygen in the air, and there will be no chemical reaction.

Taiwan group automatic fiber cutting machine is called oxygen-free melting cutting. Therefore, under the same conditions, the laser energy required for oxygen-free melting and cutting will be higher than that of oxygen-assisted melting and cutting. Generally speaking, the higher the speed of oxygen flow, the more intense the exothermic reaction of metal material oxidation. The more thoroughly the generated slag is discharged by the high-speed oxygen flow, a higher cutting speed can be obtained. However, if the oxygen flow rate is too high, the air flow will take away too much heat energy, which will cause the molten metal to cool down and slow down the oxidation reaction rate of the metal. , Will produce the phenomenon of impenetrable. Laser scribing: Laser scribing mainly refers to scribing silicon wafers. Ceramic substrates, diamond films, solar cells, etc. are all controlled fracture cutting. 1. The characteristics of the workpiece and the wavelength of the laser have a great influence on the cutting effect: because they directly affect the material's absorption rate of laser energy. The absorption rate determines the energy utilization rate of laser processing. Generally, non-metallic materials have a large absorption rate for ultraviolet laser and 10600NM CO2 laser. The absorption rate of different metal materials to different wavelengths of laser light varies greatly. The influence of process parameters: gas nozzle size, air flow, auxiliary gas, cutting speed, energy level and frequency, focus position, perforation time, program design (cutting path optimization), etc. The quality of the laser mode, the quality of the beam, and the deviation of the path all have an impact on the cutting effect. Ordinary carbon steel group automatic fiber cutting machine, low carbon steel is most suitable for oxygen-assisted melting group automatic fiber cutting machine. Low-carbon steel contains more than 99% iron. The oxidation reaction of iron generates a lot of heat, which can reduce the energy requirement of the laser. In addition, oxygen can freely pass through the iron oxide layer caused by the oxidation reaction and enter the molten material. Due to the low viscosity of the oxidized slag, it is easily blown away by the airflow. Therefore, the low-carbon steel cutting speed of the Taiwan-group automatic fiber cutting machine is better and smoother. Stainless steel table group automatic fiber cutting machine stainless steel generally uses high-pressure nitrogen to assist cutting, which requires high laser energy, and the incision is white and will not be oxidized or discolored, and there are few burrs. Such as cutting with oxygen, under the same laser energy, the speed can be faster, but the cut will be oxidized and blackened.