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The key to preventive maintenance of CNC precision machining tools is to strengthen daily maintenance. The main maintenance work includes the following contents: daily inspection, weekly inspection, monthly inspection, quarterly inspection and semi-annual inspection. The preventive maintenance of CNC machining tools is as follows:
Its main items include hydraulic system, spindle lubrication system, guide rail lubrication system, cooling system, air pressure system. Daily inspection is based on the normal conditions of each system to be tested.
For example, when the process inspection of the spindle lubrication system is carried out, the power light should be on and the oil pressure pump should be running normally. If the power light is off, keep the spindle stopped and contact a mechanical engineer for maintenance.
Its main items include machine parts, spindle lubrication systems, which should be properly checked weekly. Especially for machine parts, iron filings should be cleaned and external debris should be cleaned.
The main thing is to check the power supply and air dryer. The power supply voltage is rated at 180V-220V under normal conditions and the frequency is 50Hz. If there is any abnormality, it should be measured and adjusted. The air dryer should be disassembled once a month, then cleaned and assembled.
The quarterly inspection should mainly be inspected from the three aspects of the machine tool bed, hydraulic system and spindle lubrication system. For example, when checking the machine bed, it mainly depends on whether the machine tool accuracy and machine level meet the requirements in the manual. If there is any prpblem, you should contact the mechanical engineer immediately. When checking the hydraulic system and the spindle lubrication system, if there is any problem, replace 6oL and 20L of new oil respectively, and clean it.
After half a year, the hydraulic system, spindle lubrication system and X-axis of the machine tool should be checked. If there is a problem, the new oil should be replaced, and then the cleaning work should be carried out.
After being fully familiar with and mastering the knowledge of preventive maintenance, it is necessary to have a deeper understanding of the causes and treatment of abnormal phenomena in the hydraulic system. For example, when the oil pump does not inject oil, the pressure is abnormal, and there is noise, etc., you should know what the main reasons are and what are the corresponding solutions.
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