Fiber laser cutting machine has become more and more common, and plays an important role in manufacturing industry, machinery industry and other fields. Many times, we have seen that the laser emitted by fiber laser cutting machine is straight line, but it does not rule out that in some cases, it is necessary to change the transmission direction of laser to achieve the cutting effect. The optical path of fiber laser cutting machine also has a great impact on the cutting accuracy. Therefore, it is very important to adjust the optical path. The following are the specific steps to adjust the light path:
1. Check whether the laser can hit the first reflector. (method cover the first reflector with plastic sheet, press the test key to see the laser dot position) if the laser cannot hit the first lens, adjust the position of the first lens.
2. Check whether the laser can hit the second and third reflector. If not, adjust the M1, M2 and M3 screws behind the upper reflector.
3. Stick at least two layers of double-sided adhesive tape at the light inlet of the laser lens barrel, move the laser head to the upper right corner of the table, press the test key on the control panel, and hit a laser spot.
4. Move the laser head to the upper left corner and make another laser point, and observe whether it is in the same position with the point made in the upper right corner. If not, adjust the M1, M2, m3 screws of the second reflector. Make the point hit the same position as the point in the upper right corner.
5. Move the laser head to the lower left corner, observe whether the dot is in the same position as the upper right corner, and adjust the second reflector.
6. Repeat the adjustment as described in D and e above, and finally hit three laser points at the same position.
7. Check whether the focus is in the center: place a mirror vertically below the focusing lens, place (i.e. hold) a transparent plastic sheet close to the lens barrel under the lens barrel, press the test key to hit the laser, and see whether the laser point is in the center of the focusing lens. Be careful of laser burns when holding plastic sheets. Do not put your hands in the vertical plane of the lens.