How to adjust the optical path of laser cutting machine

1. Check the first mirror. Set the spot power to 30%, and let the speed of laser light hit the first reflection and be as close to the center as possible. First, we tear off a small part of double-sided adhesive tape, stick it on the first reflector with the front side, and then press out the outline by hand. Then "spot shooting", let the laser hit the double-sided adhesive tape, and you can see whether the laser hit the correct spot.

2. Check the light path of the second reflector. Here, we need the effect that the laser beams are coincident when the second mirror is near and far away from the first mirror. Here, we need to tear the double-sided adhesive tape into two sides, stick it on the frame of the second reflector, and then spot test to see the effect. (two points coincide, the second mirror is correct).

3. Check the light path of the third reflector. Here, we need to test whether the near and far spots of the third mirror and the first mirror coincide. Here, just like the above steps, we use double-sided tape to stick on the third reflector for spot test. If the spots near and far are coincident, the light path is correct.

4. In the above step, if the third mirror and the first mirror do not have spots and do not coincide, how should we adjust them? We will adjust the screw of the second reflector, and continue to adjust according to point 2 above. Then move the laser head to each of the four corners to make sure that the four points coincide. If they do not coincide, please repeat the previous step 2 until the four points coincide.

5. Check the center point of the third reflector. What we need is that the laser beam hits the center of the third mirror in the left and right direction as much as possible. This step is difficult to adjust, so please handle it carefully. If the center deviation is serious, how to adjust it? We can adjust it with two screws under the second mirror.

6. Check the perpendicularity of the focused center point, move the laser head to the middle of the platform, and let the laser beam shoot from the center of the bottom of the laser head and hit the 10mm acrylic vertically. Here, set the spot power at 15%-30%. Here, we tear a layer of transparent adhesive and stick it on the bottom of the laser head for spot test. Then put 10mm acrylic under the laser head for testing, and it can be seen that the verticality is no problem.

7. If the center point and verticality are abnormal after focusing, how to adjust it? We can check the center point first, then check the verticality, finally, lock all screws and nuts, and re-check the center point and verticality until they are back to normal, then move the laser head to the four corners of the platform to test the verticality, and confirm that the four corners of the platform test the verticality normally.

8. The light path sharing of this adjustment is over. Friends who have not adjusted the light path may find it complicated, but in fact, you only need a little patience in the adjustment process, check the light path according to the steps, and you will soon get started.