3.1 Maintenance of CNC system (1) Strictly abide by operating procedures and routine maintenance system CNC equipment operators must strictly abide by operating procedures and routine maintenance systems. The quality of the operator's technical service quality is an important factor affecting the frequency of faults. When the machine tool fails, the operator should pay attention to retaining the site, and tell the maintenance personnel truthfully before and after the fault, in order to facilitate analysis and diagnosis of the cause of the fault, and eliminate it in time.
(2) Prevent dust and dirt from entering the inside of the numerical control device. In the air in the machine shop, oil mist, dust and even metal powder are generally present. Once they fall on the circuit board or electronic device in the numerical control system, it is easy to cause insulation between components. The resistance drops and even causes damage to components and boards. In order to make the CNC system overload and work for a long time in the summer, some users take the door of the CNC cabinet to dissipate heat. This is an extremely undesirable method, which will eventually lead to accelerated damage of the CNC system. And strong electric cabinet doors.
(3) To prevent the system from overheating, check whether the cooling fans on the CNC cabinet are working properly. Check the air duct filter for blockage every six months or quarterly. If the dust on the filter net accumulates too much and is not cleaned up in time, the temperature inside the CNC cabinet will be too high.
(4) Periodic maintenance of the input/output device of the numerical control system Most of the numerical control machine tools produced before the 1980s have photoelectric photoelectric tape readers. If the reading band is partially contaminated, the reading information will be wrong. To this end, the optical reader must be maintained as required.
(5) Regular inspection of DC motor brushes and replacement of excessive wear of DC motor brushes can affect the performance of the motor and even cause motor damage. For this purpose, the motor brushes should be regularly inspected and replaced. CNC lathes, CNC milling machines, machining centers, etc. should be inspected once a year.
(6) Regularly check and replace the battery for storage. Generally, a CMOS RAM storage device is provided with a rechargeable battery maintenance circuit in the numerical control system to ensure that the contents of the memory can be maintained while the system is not powered. Under normal circumstances, even if it has not expired, it should be replaced once a year to ensure the system works properly. The replacement of the battery should be carried out under the power supply state of the CNC system to prevent loss of information in the RAM during replacement.
(7) Maintenance of the standby circuit board When the standby printed circuit board is not used for a long time, it should be installed in the numerical control system for a period of time to prevent damage. 3.2 Maintenance of mechanical parts (1) Maintenance of the main drive chain Regularly adjust the spindle drive The tightness of the belt prevents the phenomenon of throwing caused by the belt slip; check the constant temperature fuel tank of the spindle lubrication, adjust the temperature range, replenish the oil amount in time, and clean the filter; the cutter clamping device in the spindle will produce a gap after prolonged use. To affect the clamping of the tool, it is necessary to adjust the displacement of the piston of the hydraulic cylinder in time.
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