The key to preventive maintenance is to strengthen routine maintenance. The main maintenance work has the following contents:
Daily inspection
The main items include hydraulic system, guide rail lubrication system, cooling system and air pressure system. The daily inspection is based on the normal conditions of each system. For example, when the process of the spindle lubrication system is tested, the power supply lamp should be light. The hydraulic pump should be normal. Operation, if the power light does not light, you should keep the spindle stopped and contact the mechanical engineer for maintenance.
2. Weekly inspection
Its main items include machine tool parts and spindle lubrication systems, which should be properly inspected weekly, especially for machine parts to remove iron filings and external debris cleaning.
3. Monthly inspection
Mainly for the power supply and air dryer inspection. The power supply voltage is rated 180V-220V under normal conditions, frequency 50Hz, if there is any abnormality, it should be measured and adjusted. The air dryer should be removed once a month, then cleaned ,assembly.
4. Quarterly inspection
The quarterly inspection should mainly be carried out from three aspects: machine bed, hydraulic system and spindle lubrication system. For example, when checking the machine bed, it mainly depends on the accuracy of the machine tool and whether the machine level meets the requirements in the manual. If there is any problem, it should be immediately Contact the mechanical engineer. When inspecting the hydraulic system and the spindle lubrication system, if there are any problems, replace the new oil 60L and 20L separately and clean them.
5. Half year inspection
After half a year, the hydraulic system of the machine tool, the spindle lubrication system and the X-axis should be inspected. If there is a problem, the new oil should be replaced and then cleaned. After thoroughly familiarizing and mastering the knowledge of preventive maintenance, the oil must be applied. The cause and treatment of the abnormal phenomenon of the pressure system have a deeper understanding and necessary mastery. For example, when the oil pump does not spray oil, the pressure is abnormal, there is noise, etc., you should know what are the main reasons and what is the corresponding solution.
The causes and treatment of the abnormal phenomenon of the oil pump system should be mainly understood from three aspects:
(1) The main reason for the oil pump not to be injected may be that the liquid level paper in the fuel tank, the oil pump reverse, the rotation speed is too low, the oil viscosity is too high, the oil temperature is low, the filter is clogged, the suction pipe piping volume is too large, and the oil inlet is at the oil inlet. Inhalation of air, shaft and rotor damage, etc., there are corresponding solutions to the main reasons, such as filling the oil, confirming the sign, when the oil pump reverses, change it.
(2) The pressure is abnormal, that is, the pressure is too high or too low. The main reasons are also various, such as improper pressure setting, poor operation of the pressure regulating valve coil, abnormal pressure gauge, leakage of the hydraulic system, etc. The solution is to open and clean according to the specified pressure setting, change to a normal pressure gauge, and check according to the system.
(3) Noise and noise are mainly generated by oil pump and valve. When the valve is noisy, the reason is that the flow rate exceeds the rated standard, and the flow should be properly adjusted. When the oil pump oil noise, the reason and corresponding solution are also various aspects. If the viscosity of the oil is high and the oil temperature is low, the solution is to raise the air in the system when there is a bubble in the oil and oil in the oil. In short, it is necessary to do preventive maintenance work for the CNC machine.
Source: Luoyang Zhongyue Precision Bearing Co., Ltd.
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Tag: Air Dryer Oil Pump Lubrication System Oil Viscosity Suction Tube
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