Safety operating procedures for laser cutting machines

1. The laser cutting machine should be operated by a designated person. When multiple people operate it, a main operator must be designated. 2. Strictly follow the following startup sequence diagram for gas opening:
a. Close the discharge valve of the gas storage tank, turn on the power of the air compressor, and after the pressure of the compressed air reaches the requirement, open the valve of the gas delivery pipeline.
b. Turn on the laser premixed gas and adjust the pressure: If the gas of the non-Panasonic laser is mixed in the machine, please strictly follow the following sequence to open each type of gas: helium-carbon dioxide-nitrogen, and set the pressure of each type of gas to the specified value. c. Turn on the auxiliary cutting gas (nitrogen and oxygen). When using bottled gas, first open the valves of each bottle, and finally open the total valve switch; when using liquid gas, after opening the valve, the booster valve should also be opened to increase the gasification amount and ensure the pressure of the cutting auxiliary gas. Turn on the total power switch and start the voltage stabilizer, check the output voltage of the voltage stabilizer, and set the voltage
between 390~400V. Turn on the power of the chiller and dryer. Turn on the power of the machine control cabinet, release the emergency stop button and turn on the key switch. After the CNC system is started, enter the operation interface. When turning on the power of the machine control cabinet, you can turn on the laser power and start the low voltage and high voltage in sequence. And turn the "mode selection" key switch to the external control mode 3. Strictly follow the following shutdown sequence
National preparation before shutdown
3.
First move the cutting head to the highest point, and stop the X and Y axes in a safe position. b. Switch the workbench or stop the workbench in a safe position.
Turn off the laser high voltage and laser low voltage, wait for about 3 minutes and then turn off the laser power supply (Rofn laser can turn off the laser power supply immediately). Turn off all key switches on the laser cabinet and remove them for safekeeping. Press the emergency stop button on the side of the machine control panel and turn off the key switch, remove the key for safekeeping. Exit the operation page of the CNC system, and turn off the power of the machine main control cabinet when the page prompts that the power can be turned off. Turn off the power of the chiller and dryer. Turn off the voltage regulator. Turn off the laser gas after turning off all cutting auxiliary gases. Turn off the power of the air compressor and open the discharge valve of the gas tank
4. During the cutting process, the pressure changes of various types of cutting auxiliary gases should be observed at any time. When the low-pressure gas pressure is lower than 2bar and the high-pressure ammonia is lower than 10bar, the gas source should be replaced immediately. When replacing the gas source, the gas source valve should be closed first and then the gas pipe should be removed. If air is mixed in the gas source bottle, it should be vacuumed first and then filled with the required gas source. 5. When loading and unloading plates, appropriate hoists and tools should be used to ensure the safety of personnel and equipment.
6. Before cutting, the thickness and material of the workpiece should be confirmed, and the appropriate cutting nozzle diameter, lens specifications, focal position, and appropriate auxiliary gas and gas pressure should be selected.
7. The cleanliness and flatness of the processed plates must be guaranteed. The operator should refuse to process the plates with severe rust and extremely poor flatness.
8. Trial cutting should be carried out before batch cutting, and the cutting parameters should be appropriately corrected according to the trial cutting effect. Batch processing can be carried out after the cutting is normal.
9. During the operation of the machine, the operator must not leave the machine tool. There must be an operator who can monitor the operation status of the machine tool at any time. Once an abnormal situation occurs, please stop the machine immediately and continue production only after the problem is eliminated. 10. The machine tool must be kept clean. The operator must maintain and clean the machine tool once before leaving get off work every day. Clean and lubricate the transmission and guide rails once a quarter.
11. Check the water quality of the chiller water once a quarter: When the machine tool is turned on after a long period of non-cutting, the air and water circuits should be checked first. If necessary, please replace the chiller water. 12. Precautions for machine tool operation: 2.
Before executing the machine tool action, it must be ensured that all axes have returned to the reference point. b. During the maintenance of the machine tool, the power supply must be kept in the off position and monitored by a dedicated person to prevent accidental closing. c. Before cutting, the height of the plate should be observed first, and the thermal deformation during the plate processing should also be considered, and the total height value should be assigned to the plate thickness parameter of the CNC system.
d. After the starting point of the part is set, according to the size of the plate required for the part in the program, run the x-axis and y-axis to the given values ​​respectively to prevent the cutting head from exceeding the contour range due to the tilt of the plate position.
e. The operator should not look directly at the laser flame during cutting to prevent eye burns. Non-machine operators are not allowed to enter the cutting area, and no machine buttons should be touched during processing.
. In the process of replacing the laser gas, you must pay attention to the transmission pipeline corresponding to the gas. Do not connect the gas incorrectly, otherwise it will cause serious laser failure.
8. After each replacement of the cutting nozzle, you need to check and adjust the cutting nozzle center according to the requirements of the manual. h. Regularly calibrate the cutting nozzle height.
i. Pay attention to the water temperature of the chiller output water at any time. If it cannot meet the requirements, please stop the machine for inspection immediately.
1. Regularly check the cleanliness of the reflective lens and focusing lens. Once contaminated, please clean it immediately according to the prescribed procedures.