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Focus on cutting accuracy of fiber laser cutting machine

#1 by laser cutting machine ( Guest ) , Wed Jun 13, 2018 10:31 pm

Factors affecting the cutting quality of the fiber laser cutting machine - focus position adjustment, because the density of the laser power has a great influence on the cutting speed, the choice of lens focal length is also an important issue.
fiber laser cutting machine,co2 laser cutting engraving machine,bending machine,shearing machine
The spot size after the laser beam is focused is proportional to the focal length of the lens, the beam After being focused by the 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 to the cutting of the material; but its disadvantage is that the focal depth is short and the adjustment margin is small, and it is generally suitable for high-speed cutting of thin materials. Since the telephoto long lens has this wide depth of focus, as long as the density of sufficient power is sufficient for cutting thick workpieces.
fiber laser cutting machine,co2 laser cutting engraving machine,bending machine,shearing machine
The relative position of the focal point and the workpiece surface after determining which focal length lens to use is particularly important for ensuring cutting quality. Due to the highest power density at the focal point, in most cases, the focal position is just on the surface or slightly at the surface when cutting. Therefore, to ensure that the relative position of the focal point and the workpiece is constant during the entire cutting process is an important condition for obtaining a stable cutting quality. Sometimes the lens work is heated due to poor cooling and the focal length changes. This requires us to timely adjust the focus position.

When the focus is in the best position, the smallest slit and the highest efficiency, the best cutting speed of the fiber laser cutting machine can get the best cutting results.

In most applications, the focus of the beam should be adjusted just below the nozzle. The gap between the fiber laser cutting machine nozzle and the surface of the workpiece is generally about 1.5mm.

laser cutting machine

   

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