What factors are related to the performance of laser cutting machines?
At present, laser cutting machines have been widely used in various industries. The performance of the equipment is the fundamental factor that determines the processing efficiency. How to judge the performance of a laser cutting machine? Cutting accuracy, cutting speed, cutting effect and stability are important factors in judging the performance of laser cutting machines.
Cutting accuracy of laser cutting machines:
The cutting accuracy of laser cutting machines is related to whether the finished products are available, so it is also one of the issues that buyers are more concerned about. With the continuous advancement of technology, the precision requirements of products are getting higher and higher. More and more manufacturers have chosen laser cutting machines. As time goes by, some errors have occurred in accuracy. What are the causes of these errors?
1. The size of the spot after the laser beam is focused. The smaller the spot after the laser beam is focused, the higher the cutting accuracy.
2. The positioning accuracy of the workbench determines the repetitive accuracy of cutting. The higher the accuracy of the workbench, the higher the cutting accuracy.
3. The thicker the workpiece thickness, the larger the slit and the lower the accuracy. Since the laser beam is conical, the slit is also conical. The thicker the plate, the larger the cutting gap and the lower the cutting accuracy.
4. The material of the workpiece has a certain influence on the accuracy of laser cutting. Under the same circumstances, stainless steel has higher cutting accuracy and smoother cut surface than aluminum.
Laser cutting machine cutting speed and cutting effect:
Laser cutting has the advantages of cutting without burrs and high efficiency. Many equipment manufacturers choose to use laser cutting machines to process suitable sheet metal and parts. The processing efficiency and accuracy are better than traditional punching and molding processes. Laser processing does not consume molds, which saves processing costs and speeds up the production cycle, greatly improving the overall processing efficiency. Due to the different types and thicknesses of processed materials, as well as the influence of many factors, the cutting speed will also change accordingly, which in turn affects the cutting effect.
1. The appropriate cutting speed can improve the cutting quality, that is, the incision is slightly narrowed, the incision surface is smoother, and deformation can be reduced.
2. The cutting speed is too fast, which makes the cutting line energy lower than the required value. The jet in the slit cannot quickly blow away the molten cutting melt immediately, forming a large amount of drag, accompanied by incision slag, and the surface quality of the incision is reduced.
3. When the cutting speed is too low, since the cutting point is the anode of the plasma arc, in order to maintain the stability of the arc itself, the anode spot or anode area must find a place to conduct current near the slit closest to the arc, and at the same time, it will transfer more heat to the radial direction of the jet, thus making the incision wider, and the molten materials on both sides of the incision gather and solidify at the bottom edge, forming slag that is not easy to clean, and the upper edge of the incision forms a rounded corner due to excessive heating and melting.
4. When the speed is extremely low, the arc may even go out due to the wide incision. It can be seen that good cutting quality is inseparable from cutting speed.
Stability of laser cutting machine:
How to measure whether the stability performance of a laser cutting machine is good is a question that many buyers are more concerned about. The overall structure of the laser cutting machine consists of a crossbeam, an end frame and a sheet metal. The crossbeam generally adopts a rectangular square tube structure, which is tempered to remove internal stress and has high strength and rigidity. The mechanical part realizes high-precision gear rack transmission. The guide rail is made of high-precision guide rail. The precision-machined sliding guide rail is fastened to the concrete or steel frame foundation with a support and is equipped with adjustment bolts for installation and adjustment. The longitudinal drive system is installed in the longitudinal end frame. The low-position design makes the transmission more reasonable and stable. The overall stability of the equipment is closely related to the configuration of the whole machine. Reasonable matching can make the laser cutting machine run more stably.
