How to adjust the optical path of laser cutting machine

Laser cutting machine cutting process:  The high-pressure discharge excites high-concentration CO2 gas to generate laser ligh, through laser reflective mirror and the laser focus lens, the laser beam is concentrated in a small area. The high concentration of energy enables rapid local heating to melt the working area .

In this process, the optical path taken by the laser is a fixed path controlled by the lens. However, when the machine has been working for a long time, the light path will slightly deviate. When the deviation is serious, the copper nozzle may not be able to emit light, which affects the cutting effect. Therefore, daily inspection and adjustment of the optical path of the machine are very necessary.

Before adjusting the optical path of the laser cutting machine, we must have enough knowledge and understanding of the laser tube, the reflector frame and the focus lens.
(1)Adjustment of the first optical pathUse dimming paper to stick on the target hole of the first reflector, manually press the “Pulse” button (note that the power should not be too large at this time), if the light spot is not in the center, then fine-tune the base of the first reflector and the laser tube bracket so that the light hits the center of the target hole, note that the light cannot be blocked. 
 

(2)Adjustment of the second optical path

Use dimming paper to stick to the target hole of the second reflector, move the second reflector from near to far, and then manually press the “Pulse” button , so that the near and far spots are in the same position, and the optical path is parallel to the X-axis rail. The optical path adjustment is completed.

 

(3)Adjustment of the third optical path

Use dimming paper to stick to the target hole of the third reflector, move the third reflector from near to far, and then manually press the “Pulse” button, so that the near and far spots are in the same position, and the optical path is parallel to the X-axis rail. The optical path adjustment is completed.

 

(4)Adjustment of the fourth optical path

Use transparent tape to stick to the light exit, so that the light hole leaves a circular mark on the adhesive tape, press the “Pulse” button. After that, remove the adhesive tape to observe the position of the small hole, if not in the center, adjust the third reflector’s screws according to the situation until the spot is round and positive.

 

Through the demo video below, we can understand the steps of optical path adjustment more intuitively.

 

 

If you are still in doubt during the use of the machine, you can leave a message or call +86-769-26384404, we will be happy to help you! 

 

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