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Laser cutting machine maintenance-how to extend the service life of laser cutting machine

Views:7     Author:Cora     Publish Time: 2021-02-18      Origin:fiber laser cutting machine

Laser cutting machines are equipment used to process metal materials. The price is often not low, ranging from hundreds of thousands to millions. Therefore, as long as possible to extend the service life of the laser cutting machine to better save production costs. So how to maintain the laser cutting machine? How can the service life of the laser cutting machine be extended?


Before understanding the daily maintenance of the laser cutting machine, we need to understand the main components of the laser cutting machine, which are mainly divided into: circuit system, transmission system, cooling system, light source system, and dust removal system. The main daily maintenance parts are the cooling system (to ensure the constant temperature effect), the dust removal system (to ensure the dust removal effect), the optical path system (to ensure the beam quality), and the transmission system (focus on ensuring normal operation). In addition, a good working environment and correct operating habits are also conducive to extending the service life of the equipment.


How to extend the service life of laser cutting machine? First of all, when we need to use the cutting machine for work, we must first push the beam before starting the machine, try to move it back and forth, and move it left and right without abnormal noise before powering on. After finishing the work of the day, clean up the materials and waste generated in the machine that day. This can protect the motion system of the machine and prevent it from being damaged by foreign objects. Clean up its moving parts to keep the machine in good working condition. The specific methods are as follows:


1. Cooling system maintenance

The water inside the water cooler must be replaced regularly, and the general replacement frequency is one week. Make sure that the laser tube is filled with circulating water before the machine works. The quality and temperature of the circulating water directly affect the service life of the laser tube. It is recommended to use pure water or distilled water and keep the water temperature below 35°C. If you do not change the water for a long time, it is easy to form scale, which will block the waterway, so you must change the water regularly.


Keep the water flowing 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 light output power (15-20℃ water temperature is better); when the water is cut off, the tube end will burst due to the heat 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, and the water pump fails, it must be repaired in time to avoid power drop or even equipment damage.


2. Maintenance of dust removal system

After the fan is used for a long time, a lot of dust will accumulate in it, which will affect the exhaust and deodorization effect, and also produce noise. When it is found that the suction power of the fan is insufficient and the smoke exhaust is not smooth, the fan must be cleaned. First turn off the power, remove the air inlet and outlet pipes on the fan to remove the dust inside, then turn the fan upside down, flip the blades inside until it is clean, and then install the fan. Fan maintenance cycle: about one month.


3. The optical path system maintains the cleaning of the lens

After the machine has been working for a period of time, a layer of ash will stick to the surface of the lens due to the working environment, thereby reducing the reflectivity of the reflective lens and the transmittance of the lens, and ultimately affecting the working power of the laser. At this time, use absorbent cotton dipped in ethanol to wipe carefully along the center to the edge of the lens.


Note when wiping the lens:

a. The lens should be wiped gently, and the surface coating should not be damaged;

b. The wiping process should be handled gently to prevent falling;

c. When installing the focusing lens, be sure to keep the concave surface down

In addition, the use of ultra-high-speed piercing should be reduced as much as possible at ordinary times, and the use of conventional piercing can extend the service life of the focusing lens


4. Drive system maintenance

Smoke and dust will be generated during the long-term cutting process of the equipment, and the fine smoke and dust will enter the equipment through the dust cover and adhere to the rail rack. Long-term accumulation will increase the wear of the rail rack. Rack guide rails are relatively precise accessories. Large amounts of dust are deposited on the surfaces of guide rails and linear shafts for a long time, which has a great impact on the processing accuracy of the equipment, and will form corrosion spots on the surface of the linear shaft of the guide rails, shortening the service life of the equipment. Therefore, in order to ensure the normal and stable operation of the equipment and ensure the processing quality of the products, it is necessary to carefully do the daily maintenance of the guide rails and linear shafts, and regularly clean up the dust. After cleaning the dust, grease the rack and lubricate the guide rail with lubricating oil. Each bearing should also be oiled regularly, so as to maintain flexible driving, precise machining and prolong the service life of the machine tool.


5. Working environment

The environment of the workshop should be kept dry and well ventilated, and the ambient temperature should be between 4°C and 33°C. In summer, prevent condensation on the equipment, and prevent freezing of the laser equipment in winter.


The equipment should be kept away from electrical equipment that is sensitive to electromagnetic interference to prevent the equipment from long-term electromagnetic interference. Stay away from the sudden large power interference from high power and strong vibration equipment. Large power interference sometimes causes the machine to malfunction. Although it is rare, it should be avoided as much as possible. Therefore, large electric welding machines, giant electric mixers, and large power transmission and transformation equipment should be kept away. Strong vibration equipment is even more self-evident, such as forging presses, vibrations caused by close-range motor vehicles walking, etc., the obvious shaking of the ground is very detrimental to accurate carving.


6. Other matters needing attention


1. Put a little lubricating oil on the screws, including the screws on the laser tube support and the first reflector, which can facilitate the disassembly and assembly during maintenance. Note: Do not add lubricating oil to timing belts, drag chains, air pipes, motors, sensors, lenses, and wires.


2. No items can be placed in the machine to avoid unnecessary damage to the machine.


3. Clean up with cotton cloth: dust and foreign matter on the metal oil tanker, metal shaft, sliding block and linear guide rail, and then add lubricating oil, and carry out empty reciprocating motion.


During the working process of the equipment, the operator must observe the working conditions of the equipment at any time. If an abnormal situation occurs, immediately cut off all power sources, troubleshoot the fault in time or report to the supervisor, and actively take corresponding measures. Regularly count the use of the machine, and keep a record of each part of the laser cutting machine. If the effect is not good, replace it in time to prevent problems before they occur.


Do not process a material before it is clear whether it can be irradiated or heated by laser, so as to avoid the potential hazards of smoke and vapor and damage the laser equipment.


If you make good use of the above maintenance skills, Dato laser believe that your equipment will last longer and work more efficiently!

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