As we all know, one of the most important components of fiber laser cutting machine is the characteristic laser cutting head with high precision and high price. Although the life of the laser cutting head does not affect the working efficiency of the cutting machine, it affects the production cost and factory income. In addition, the most common problem affecting the life of the cutting head is the pollution damage of the optical lens inside the structure. Today, Chuyu Optoelectronics will teach how to maintain the optical lens of the laser cutting head?
The following are possible causes of lens contamination.
1. The optical fiber head in the cutting head is installed incorrectly.
Therefore, the main solution is to choose the correct installation method of optical fiber head. Most installers tend to assemble the cutting head freely, so as to tilt the installation direction of the optical fiber head, resulting in careless installation. We should try to install the fiber head horizontally inside the cutting head and lock it during installation. In addition, we can try to operate in a clean environment to avoid raising dust during installation, or choose to operate in the morning to prevent dust from entering the cutting head.
2. Poor sealing effect of cutting head
In order to seal the cutting head, even if it is manufactured according to German technology, it is not always able to ensure complete sealing. In addition, in the subsequent operation, due to the temperature difference between the interior (relatively high temperature) and exterior (relatively low temperature) of the cutting head, the air pressure is unbalanced and may cause dust to enter the cutting head, thus affecting its service life. Then, it is feasible to install a blowing system to maintain the internal pressure of the cutting head.
How to maintain the optical lens of the laser cutting machine?
3. Incorrect replacement of protective window box
Due to the large volume of the protective mirror box, particles will inevitably be mixed in the replacement process. Therefore, the speed must be changed when replacing the protective mirror box, and the window should be sealed with tape or other films when quickly removing the mirror box, and should be replaced carefully.
4. Use of unreasonable cutting head consumables
Selecting qualified protective glasses and “O” type sealing rubber ring can ensure the sealing of cutting head and prevent dust from entering.
5. Improper operation of laser cutting machine
When operating the laser cutting machine, the equipment instructions and requirements must be strictly followed and the operation must be correct. Reduce the impact of incorrect handling on the cutting head.
6. Poor maintenance of cutting head
The cutting head shall be as clean and dry as possible and cleaned regularly.
7. Wrong selection of laser cutting process data parameters
First of all, we know that the laser cutting process can be divided into four categories: vaporization cutting, melting cutting, oxidation melting cutting and controlled fracture cutting. Because different cutting processes have different corresponding parameter data, including cutting capacity, plate type, plate thickness, auxiliary gas, etc., correct screening and cutting process is the key to protect the laser cutting head.
The reasons that affect the optical lens and the corresponding solutions are described above. Although it cannot be guaranteed that the cutting head will never be contaminated, taking appropriate precautions can slow down the lens speed and minimize lens loss. To sum up, Chuyu Optoelectronics believes that as long as it can be carried out in a fine place and strictly controlled, it can prevent the optical lens pollution inside the fiber laser cutting head to the greatest extent, delay the aging of the cutting head, and ensure production.
