Here are some tips for adjusting the light path of 3015D fiber laser cutting machine.
1, check whether the laser can hit the first mirror, if not adjust the position of the first lens.
2, check whether the laser can hit the second and third mirror, if not, adjust the M1, M2, M3 screws after the upper mirror.
3, move the laser head to the upper left corner and then play a laser point, observe whether the point is in the same position with the upper right corner, if not adjust the M1, M2, M3 screws of the second mirror, so that the point is in the same position with the upper right corner.
4. Paste at least two layers of double-sided adhesive at the light inlet of the laser tube, move the laser head to the upper right corner of the table, press the TEST key on the control panel, and hit a laser point.
5, move the laser head to the lower left corner, observe whether the dot and the upper right corner in the same position, adjust the second mirror.
6, the above 4 and 5 repeated adjustment, so that the final laser point three points play in the same position.
7. Check whether the focus is in the center: put a mirror vertically below the focusing mirror, press TEST key to hit the laser on the center of the focusing mirror by pressing the transparent plastic sheet against the mirror tube (i.e. hand-held). Be careful of laser burn when holding plastic sheet. Do not place your hand within the vertical plane of lens.
These tips to ensure that we adjust the light path of laser cutting machine, laser cutting machine for us the light path adjustment is very important, but the adjustment process is very complicated, so we should be careful enough when setting, only carefully set up to ensure the accuracy of optical fiber laser cutting equipment is the best.
Laser cutting machine cutting quality factors - focus position adjustment, because the laser power density has a great impact on cutting speed, lens length selection is also a more important issue. The size of the spot after laser beam focusing is proportional to the focal length of the lens. After the beam is focused by a short focal length lens, the spot size is very small, and the power density at the focus is very high, which is very beneficial to the cutting of the material. However, its disadvantage is that the focal depth is very short and the adjustment allowance is small, which is generally suitable for high-speed cutting of thin materials. Since a telephoto lens has this wide focal depth, it is suitable for cutting thick workpieces as long as it has enough power density.
When the focus is in the best position, the slit is the smallest, the efficiency is the highest, and the best cutting result can be obtained by the best cutting speed of fiber laser cutting equipment.
The relative position of focal point and workpiece surface is very important to ensure cutting quality. Since the power density is highest at the focal point, in most cases, the cutting focal point is just or slightly below the surface of the workpiece. Therefore, it is an important condition to obtain stable cutting quality to ensure that the relative position of focus and workpiece is constant during the whole cutting process. Sometimes the lens is heated during the operation due to poor cooling, which causes the focal length to change, which requires us to adjust the focus position in time.
In most applications, the focus of the beam should be adjusted to just under the nozzle, and the distance between the nozzle of the fiber laser cutting machine and the workpiece surface is generally about 1.5mm.