other
Blog

The focus position affects the cutting accuracy of the fiber laser cutting machine

  • 2020-08-25 14:30:03

The focus position affects the cutting accuracy of the fiber laser cutting machine


The factor affecting the cutting quality of the fiber laser cutting machine is focus position adjustment. Since the laser power density has a greater impact on the cutting speed, the choice of lens focal length is also a more important issue. The spot size after the laser beam focused is proportional to the focal length of the lens. After the beam is focused by a short focal length lens, the spot size is small and the power density at the focal point is high, which is beneficial to the cutting of materials. But its disadvantage are that the focal depth is shorter and the adjustment margin is small, so it is generally suitable for high-speed cutting of thin materials.

fiber laser cutting machine

Since the long focal length lens has a relatively wide focal depth, as long as it has sufficient power density, it is suitable for cutting thick workpieces. After determining which focal length lens to use, the relative position of the focus and the workpiece surface is particularly important to ensure the cutting quality. Due to the high power density at the focal point, in most cases, the focal position is just at the surface of the workpiece or slightly below the surface during cutting. Therefore, ensuring a constant relative position between the focus and the workpiece during the entire cutting process is an important condition for obtaining stable cutting quality.

fiber laser cutting machine manufacturer

Sometimes the lens is heated due to poor cooling during work, which causes the focal length to change, which requires us to adjust the focal position in time. When the focus is at a better position, the slit is small and the efficiency is high. The better cutting speed of the fiber laser cutting machine can obtain better cutting results. In most applications, the beam focus should be adjusted to just under the nozzle, and the distance between the nozzle of the fiber laser cutting machine and the surface of the workpiece is generally about 1.5mm

Hope it's helpful for you


Product details: Fiber Laser Cutter

Copyright © 2015-2020 Anhui Aoxuan Heavy Industry Machine Co.,Ltd.All Rights Reserved.

top

leave a message

leave a message

    If you are interested in our products, please leave a message here, you will know more details.