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Laser cutting machine and a simple method to adjust focus accurately
by：Transon
2020-10-31
Laser cutting machine and a simple method to adjust accurately focus (
1)
Blue spark method: remove the nozzle, blowing air, will play on stainless steel plate, the pulse laser makes the cutting head from the top down movement, until the blue sparks as the focus.
So we can calculate the focal point, after cutting process according to different plate thickness different corresponding focusing.
Flying light path of the cutting machine, as a result of beam divergence Angle, cutting the proximal and distal time path length is different, focusing the beam size before have certain difference.
The diameter of the incident beam is larger, the smaller the diameter of the focal spot.
In order to reduce the focus beam size change before the change of the focal spot size, domestic and foreign manufacturers of laser cutting system provides some special device for users to choose.
( 2) Inclined plate method: use and a vertical axis Angle of inclined put plastic board makes its level, looking for a laser beam as the focus of the small.
( 3) Printing method: make the cutting head from the top down movement, laser print on the plastic sheet, print small diameter as the focus.
( 2) Inclined plate method: use and a vertical axis Angle of inclined put plastic board makes its level, looking for a laser beam as the focus of the small.
( 3) Printing method: make the cutting head from the top down movement, laser print on the plastic sheet, print small diameter as the focus.
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