Laser cutting leaving a burr on only one side of a square test cut
Laser cutting leaving a burr on only one side of a square test cut
(OP)
Hi,
Hope someone can help me, I am doing some test cutting out 2" square pieces. I Cant understand why 3 of the 4 sides of the square cuts are excellent and one leaves a burr. It is always the same side. At first I thought that the nozzle was not centred, but checked it several times and thats ok. Is there something that I am missing or need to check or adjust?
Hope someone can help me, I am doing some test cutting out 2" square pieces. I Cant understand why 3 of the 4 sides of the square cuts are excellent and one leaves a burr. It is always the same side. At first I thought that the nozzle was not centred, but checked it several times and thats ok. Is there something that I am missing or need to check or adjust?





RE: Laser cutting leaving a burr on only one side of a square test cut
RE: Laser cutting leaving a burr on only one side of a square test cut
RE: Laser cutting leaving a burr on only one side of a square test cut
Ideally, the focal point is directly in the center of the focus lens, just 5" closer to the material. In reality, I think some lenses are off just a bit, a little +X, a little +y, or the opposite. My idea is that when the nozzle is centered relative to the beam it may be done at one focal position, yet cutting done at another. The machine moves the focus to cut and draws the beam to one side of the nozzle, but when the operator runs the nozzle center program, the focal point is moved back to the center.
RE: Laser cutting leaving a burr on only one side of a square test cut
RE: Laser cutting leaving a burr on only one side of a square test cut
In either case, I think it would be a good practice to keep the focus position while centering the same as while cutting.
RE: Laser cutting leaving a burr on only one side of a square test cut
RE: Laser cutting leaving a burr on only one side of a square test cut
Chris Krug http://krugtech.com/
Maximum Up-time, Minimum BS
RE: Laser cutting leaving a burr on only one side of a square test cut
RE: Laser cutting leaving a burr on only one side of a square test cut
Oh, another weird experience was a freon leak in the compressor room which got into the beam purge air causing the mode to increase in size as the beam passed through it. found that by taking a mode at the top of the beam delivery, checked good. at the table bad. changed optic, same thing. jut off the air which comes in right above the lens to keep a positive flow to protect the lens. Mode was good. we use only nitrogen now there or nothing.