The application of fiber laser cutting machine is gradually expanding

With the development of China's automobile industry, the application of fiber laser cutting machine technology has gradually expanded, such as laser marking technology in the automotive electronics industry, laser etching two-dimensional code technology, automotive related laser precision welding, automotive precision laser Punching and cutting, high-power laser technology applied to the body-in-white, three-dimensional laser cutting technology of gear and airbag and exhaust pipe laser welding covering parts, laser cutting weakening technology, laser applications in molds and plastic molds, such as mold marking Technology and laser mold repair technology. In the field of shipbuilding and construction machinery, laser, plasma cutting technology and laser cladding technology are mainly used; in the kitchen and bathroom industry, marking machines are used more frequently, and laser cutting of molds, etc.; in the petrochemical industry, such as oil drill pipes, laser repair strength is improved, The cost is reduced. Lasers are also widely used in aerospace, such as welding and marking of aluminum and titanium alloys, welding of shells, and cutting of pipe fittings. It is believed that the application fields of laser technology are becoming wider and wider, and the impact on the industry will also increase.

Fiber laser cutting machine is a thermal processing with a high power density. During the cutting process, the laser energy generates heat and is inevitably conducted to the area around the cutting point. When cutting large contours, the heat is more dispersed and the conduction effect is good. However, when cutting small round holes and other small contours, the heat is concentrated and the temperature of the plate increases. The higher the temperature of the cutting point, the higher the plate’s absorption rate of laser light, which causes the laser energy obtained at this position to exceed the normal requirement. At the same time, the excess laser energy will cause ablation of the position, especially the higher the oxygen pressure and the speed. The lower the value, it will strengthen the oxidation of the plate, and the ablation effect will be more obvious. The effect will be wider at the cutting position and the cutting quality will be worse; on the contrary, the cutting quality at this position will be better, so control the cutting point The temperature of the surface of the nearby material is very important. The temperature near the cutting point is related to the adjustment of the process parameters.

Degree of freedom robot incremental step-length path planning algorithm is developed in the automotive large-scale panel stamping production line. The reasonable path planning of the handling robot can make the robot move to avoid its own structural defects and make the robot safe and stable in a complex environment. Work down. Path refers to the curve of space. For a six-degree-of-freedom articulated robot, it refers to the specific motion pose of the robot. Robot path planning refers to a given initial and target pose, searching for a path by using an appropriate algorithm. The effective path from the initial pose to the target pose.

The fiber laser cutting machine through the process research experiment of cutting a small round hole with a diameter of 10mm on a carbon steel plate with a thickness of 16mm, has obtained the law of the influence of process parameter changes on the cutting quality, and has been better optimized Process parameters. When the fiber laser power is 1600W, the speed is 0.6m/min, the oxygen pressure is 0.6kg, and the focus position is +2.5mm, a better cutting effect can be obtained. Through the analysis of the above research curve, it can be seen that when processing small round holes in thick plates, the use of low power, slow speed, low air pressure, and high focus parameters can avoid over-burning caused by too high temperature, and at the same time obtain better Cutting effect.