The main components of the laser cutting machine are the circuit system, the transmission system, the cooling system, the light source system and the dust removal system. The daily key parts to be maintained are mainly the cooling system (to ensure the constant temperature effect), the dust removal system (to ensure the dust removal effect), the light path system (to ensure the beam quality), and the transmission system (to focus on ensuring the normal operation). In addition, a good working environment and correct operating habits are also conducive to extending the service life of the equipment.
1、 Cooling system maintenance
The water inside the water cooler needs to be replaced regularly, and the general replacement frequency is one week. The quality and temperature of circulating water directly affect the service life of the laser tube. It is recommended to use pure water or distilled water and control the water temperature below 35 ℃. If you don't change the water for a long time, it is easy to form scale, which will block the waterway. Therefore, you must change the water regularly.
Second, keep the water flowing smoothly at all times. The cooling water is responsible for taking away the heat generated by the laser tube. The higher the water temperature, the lower the optical output power (the water temperature of 15-20 ° C is the best); When the water is cut off, the tube end will explode due to heat accumulation in the laser cavity, and even damage the laser power supply. Therefore, it is necessary to check whether the cooling water is unblocked at any time. When the water pipe has a hard bend (dead bend) or falls off, so that the water pump fails, it must be repaired in time to avoid power reduction or even equipment damage.
2、 Dust removal system maintenance
After being used for a long time, the fan will accumulate a lot of dust, which will affect the exhaust and deodorization effects and generate noise. When it is found that the suction force of the fan is insufficient and the smoke exhaust is not smooth, first turn off the power supply, remove the air inlet and outlet pipes on the fan, remove the dust inside, and then turn the fan upside down, move the blades inside until they are clean, and then install the fan. Fan maintenance cycle: about one month.
3、 Optical system maintenance
After the machine works for a period of time, a layer of ash will stick to the lens surface due to the working environment, which will reduce the reflectivity and transmittance of the reflective lens and ultimately affect the working power of the laser. At this time, use absorbent cotton dipped in ethanol to carefully rotate and wipe along the center of the lens to the edge. The lens shall be wiped gently without damaging the surface coating; The wiping process should be handled with care to prevent falling; When installing the focus lens, be sure to keep the concave surface downward. In addition, the use of ultra-high-speed perforations should be minimized at ordinary times, and the use of conventional perforations can prolong the service life of the focus lens.
4、 Transmission system maintenance
Dust will be generated during long-term cutting of the equipment. Fine dust will enter the equipment through the dust cover, and then adhere to the guide rail rack. Long term accumulation will increase the wear of the guide rail rack. Rack guide rail is a relatively precise accessory. Dust is deposited on the surface of guide rail and linear shaft for a long time, which has a great impact on the machining accuracy of the equipment, and will form corrosion spots on the surface of guide rail and linear shaft, shortening the service life of the equipment. Therefore, in order to ensure the normal and stable operation of the equipment and the processing quality of the products, it is necessary to do a good job in the daily maintenance of the guide rail and the linear shaft and regularly clean the dust. After cleaning the dust, grease the rack and lubricate the guide rail with lubricating oil. All bearings should also be lubricated regularly, so as to maintain flexible driving, accurate machining and prolong the service life of the machine tool.
5、 Working environment
The environment of the workshop shall be dry and well ventilated. The ambient temperature shall be 4 ℃ - 33 ℃. In summer, the equipment shall be prevented from condensation. In winter, the laser equipment shall be protected from freezing.
The equipment shall be far away from the electrical equipment sensitive to electromagnetic interference to prevent the equipment from being subjected to electromagnetic interference for a long time. Stay away from the sudden large power interference of large power and strong vibration equipment. Although it is rare, it should be avoided as far as possible. Therefore, large electric welding machines, giant electric mixers and large power transmission and transformation equipment should be kept away from. Strong vibration equipment is self-evident, such as the vibration caused by forging presses and close motor vehicles. The obvious shaking of the ground is very unfavorable to accurate engraving.
6、 Other precautions
During the operation of the equipment, the operator must observe the working condition of the equipment at any time. In case of abnormal conditions, cut off all power supplies immediately, remove faults in time or report to the competent personnel, and actively take corresponding measures. Regularly count the use of the machine, regularly keep records of each part of the laser cutting machine, and replace it in time if the effect is poor, so as to prevent problems from happening.
Do not process a material before it is clear whether it can be irradiated or heated by laser, so as to avoid potential dangers of smoke and vapor and damage to laser equipment.
If you use the above maintenance skills well, I believe your equipment will have a longer service life and higher work efficiency!