In the metal laser cutting machine, how to improve the work efficiency for parts with higher cutting accuracy or larger thickness?
Focus position control is one of them. One of the advantages of laser cutting is that the energy density of the beam is high, so the focal spot diameter is as small as possible in order to produce a narrow slit. Because the smaller the focal depth of the focusing lens, the smaller the focal spot diameter. For high-quality cutting, the effective focal depth is also related to the lens diameter and the material to be cut. Therefore, it is important to control the position of the focus relative to the surface of the material to be cut.
Since the laser power density has a great influence on the cutting speed, the choice of lens focal length is an important issue. After the laser beam is focused, the spot size is proportional to the lens focal length. After the beam is focused by a short focal length lens, the spot size is very small, and the power density at the focal point is very high, which is very beneficial for material cutting; but its disadvantage is that the focal depth is very short, and the adjustment margin Small, generally suitable for high-speed cutting of thin materials. Since the long focal length lens has a wider focal depth, as long as it has sufficient power density, it is more suitable for cutting thick workpieces.
After determining which focal length lens to use, the relative position of the focal point and the surface of the workpiece is particularly important to ensure the cutting quality. Due to the high power density at the focus, in most cases, the focus position is just on the surface of the workpiece during cutting, or slightly below the surface.
During the entire cutting process, ensuring a constant relative position between the focus and the workpiece is an important condition for obtaining stable cutting quality. Sometimes, the lens is heated due to poor cooling during operation, which causes the focal length to change, which requires timely adjustment of the focus position. When the focus is in the right position, the slit is small, the efficiency is high, and the cutting speed can obtain good cutting results. In most applications, the beam focus is adjusted to just under the nozzle.
To improve the working efficiency of laser cutting machines must also be under the premise of safe production, which is also what every enterprise must master. In this way, more value can be created for the enterprise. Do a good job in safe operations to reduce unnecessary losses for the enterprise.
Wonder Inc is the leading provider of china laser cutting solutions and has been advancing the application of laser technology since 1995. Research and Development efforts have resulted in numerous patents, with several pending, in our continual pursuit to develop and enhance laser systems that benefit the customer. Our R&D philosophy and execution are based upon designing highly modular solutions which gives customers the flexibility and investment protection to optimize laser systems as their business evolves.