CNC machine tool maintenance and maintenance content
The key to preventative maintenance is to enhance routine maintenance. The main maintenance tasks include the following:
Daily inspection
Its main projects include hydraulic systems, spindle lubrication systems, rail lubrication systems, cooling systems, and pneumatic systems. Daily inspection is based on the normal conditions of each system to be detected. For example, when performing the process inspection of the spindle lubrication system, the power light should be on and the hydraulic pump should operate normally. If the power light is off, the spindle should be stopped and contacted by the mechanical engineer. Perform repairs.
2. Weekly inspection
Its main projects include machine tool parts and spindle lubrication systems, which should be checked on a weekly basis, especially for machine tool parts to remove iron filings and external debris cleaning.
3. Monthly inspection
Mainly to check the power supply and air dryer. Under normal circumstances, the power supply voltage is rated at 180V-220V and frequency is 50Hz. If there is any abnormality, it must be measured and adjusted. The air dryer should be removed once a month and then cleaned and assembled.
4. Seasonal inspection
The quarterly inspection should mainly be carried out in three aspects: machine bed, hydraulic system, and spindle lubrication system. For example, when inspecting the machine tool bed, it mainly depends on whether the machine tool accuracy and machine tool level meet the requirements in the manual. If there is any problem, contact the mechanical engineer immediately. When inspecting the hydraulic system and the spindle lubrication system, if there is a problem, the new oil 6oL and 20L should be replaced and cleaned.
5. Semi-annual inspection
After six months, the machine's hydraulic system, spindle lubrication system, and X-axis should be inspected. If something goes wrong, it should be replaced with new oil and then cleaned.
After fully familiarizing with and mastering the knowledge of preventive maintenance, it is also necessary to have a deeper understanding and necessary understanding of the causes and handling of abnormal phenomena in the hydraulic system. Such as when the oil pump does not spray oil, pressure is not normal, there is noise, etc., should know what the main reasons, what is the corresponding solution. The causes and treatment of abnormal phenomena in the hydraulic system should be understood mainly from three aspects:
(1) The oil pump does not spray
The main reasons may be that the tank is low in liquid level, the oil pump is reversed, the speed is too low, the oil viscosity is too high, the oil temperature is low, the filter is clogged, the suction piping capacity is too large, the air inlet sucks air, shaft and rotor Damaged areas, etc., have corresponding solutions to the main causes, such as filling with oil, confirming signs, and changing over when the oil pump reverses.
(2) The pressure is abnormal
That is, the pressure is too high or too low. The main reasons are various, such as improper pressure setting, poor operation of the pressure regulating valve coil, abnormal pressure gauge, and leakage of the hydraulic system. The corresponding solution is to set the pressure according to the provisions of open cleaning, change a normal pressure gauge, according to each system in turn inspection.
(3) Noise
Noise is mainly caused by oil pumps and valves. When the valve is noisy, the reason is that the flow rate exceeds the rated standard and the flow rate should be properly adjusted. When the oil pump is noisy, the reason and the corresponding solution are also many, such as the high viscosity of the oil and the low oil temperature. To raise the oil temperature; when there are air bubbles in the oil, the air in the system should be released.
All in all, we must do a good job of preventive maintenance of CNC machine tools.
Daily inspection
Its main projects include hydraulic systems, spindle lubrication systems, rail lubrication systems, cooling systems, and pneumatic systems. Daily inspection is based on the normal conditions of each system to be detected. For example, when performing the process inspection of the spindle lubrication system, the power light should be on and the hydraulic pump should operate normally. If the power light is off, the spindle should be stopped and contacted by the mechanical engineer. Perform repairs.
2. Weekly inspection
Its main projects include machine tool parts and spindle lubrication systems, which should be checked on a weekly basis, especially for machine tool parts to remove iron filings and external debris cleaning.
3. Monthly inspection
Mainly to check the power supply and air dryer. Under normal circumstances, the power supply voltage is rated at 180V-220V and frequency is 50Hz. If there is any abnormality, it must be measured and adjusted. The air dryer should be removed once a month and then cleaned and assembled.
4. Seasonal inspection
The quarterly inspection should mainly be carried out in three aspects: machine bed, hydraulic system, and spindle lubrication system. For example, when inspecting the machine tool bed, it mainly depends on whether the machine tool accuracy and machine tool level meet the requirements in the manual. If there is any problem, contact the mechanical engineer immediately. When inspecting the hydraulic system and the spindle lubrication system, if there is a problem, the new oil 6oL and 20L should be replaced and cleaned.
5. Semi-annual inspection
After six months, the machine's hydraulic system, spindle lubrication system, and X-axis should be inspected. If something goes wrong, it should be replaced with new oil and then cleaned.
After fully familiarizing with and mastering the knowledge of preventive maintenance, it is also necessary to have a deeper understanding and necessary understanding of the causes and handling of abnormal phenomena in the hydraulic system. Such as when the oil pump does not spray oil, pressure is not normal, there is noise, etc., should know what the main reasons, what is the corresponding solution. The causes and treatment of abnormal phenomena in the hydraulic system should be understood mainly from three aspects:
(1) The oil pump does not spray
The main reasons may be that the tank is low in liquid level, the oil pump is reversed, the speed is too low, the oil viscosity is too high, the oil temperature is low, the filter is clogged, the suction piping capacity is too large, the air inlet sucks air, shaft and rotor Damaged areas, etc., have corresponding solutions to the main causes, such as filling with oil, confirming signs, and changing over when the oil pump reverses.
(2) The pressure is abnormal
That is, the pressure is too high or too low. The main reasons are various, such as improper pressure setting, poor operation of the pressure regulating valve coil, abnormal pressure gauge, and leakage of the hydraulic system. The corresponding solution is to set the pressure according to the provisions of open cleaning, change a normal pressure gauge, according to each system in turn inspection.
(3) Noise
Noise is mainly caused by oil pumps and valves. When the valve is noisy, the reason is that the flow rate exceeds the rated standard and the flow rate should be properly adjusted. When the oil pump is noisy, the reason and the corresponding solution are also many, such as the high viscosity of the oil and the low oil temperature. To raise the oil temperature; when there are air bubbles in the oil, the air in the system should be released.
All in all, we must do a good job of preventive maintenance of CNC machine tools.
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