The key to preventive maintenance of CNC lathes is to strengthen daily maintenance. Maintenance work includes daily inspections, weekly inspections, monthly inspections, quarterly inspections, and semi-annual inspections.
Preventive maintenance of CNC lathes is as follows:
- Daily inspection of CNC lathes includes the hydraulic system, spindle lubrication system, guide rail lubrication system, cooling system, and pneumatic system. Daily inspections are performed based on the normal operating conditions of each system being tested. For example, when testing the spindle lubrication system, the power indicator light should be on, and the oil pump should be running normally. If the power indicator light is not on, the spindle should remain stopped, and a mechanical engineer should be contacted for repair.
- Weekly inspection of CNC lathes includes machine tool parts and the spindle lubrication system. Appropriate inspections should be performed weekly, especially on machine parts, to remove metal chips and external debris.
- Monthly inspection of CNC lathes mainly involves checking the power supply and air dryer. Under normal circumstances, the power supply voltage is 180V-220V, and the frequency is 50Hz. If there are any exceptions, they must be measured and adjusted. The air dryer should be disassembled, cleaned, and reassembled monthly.
- Quarterly inspection of CNC lathes should mainly focus on the machine tool, hydraulic system, and spindle lubrication system. For example, when inspecting the machine tool bed, the main focus is on the accuracy of the machine tool and whether the machine tool level meets the requirements of the manual. If there are any problems, contact a mechanical engineer immediately. When inspecting the hydraulic system and spindle lubrication system, if there are any problems, replace the lubricating oil and clean the system.
- Semi-annual inspection of CNC lathes: After six months, the hydraulic system, spindle lubrication system, and X-axis of the machine tool should be inspected. If there are any problems, the oil should be replaced, and cleaning should be performed. After thoroughly understanding and mastering the knowledge of preventive maintenance of CNC lathes, it is necessary to better understand and master the causes and solutions for abnormal phenomena in the hydraulic system. For example, when phenomena such as the oil pump not supplying oil, abnormal pressure, or noise occur, we should know the main causes and the corresponding solutions.
