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Maintenance methods of CNC processing center

2018/5/11 19:06:21 Viewers:
Abstract: the correct operation and maintenance of CNC equipment can prevent the machine tool from abnormal wear and avoid sudden breakdown of machine tools. The careful maintenance of machine tools can maintain the long-term stability of machine tool processing accuracy and prolong the service life of machine tools. This work must be highly valued and implemented from the management level of the factory.


Proper operation and maintenance of CNC equipment can prevent abnormal wear of machine tools and avoid sudden breakdown of machine tools. The careful maintenance of machine tools can maintain the long-term stability of machine tool processing accuracy and prolong the service life of machine tools. This work must be highly valued and implemented from the management level of the factory.


Responsible person for maintenance and maintenance


1. The operator is responsible for the use, maintenance and basic maintenance of the equipment.


2. Equipment maintenance personnel are responsible for equipment maintenance and necessary maintenance.


3. Workshop management is responsible for the supervision of all operators and equipment maintenance in the workshop.


Basic requirements for the use of numerical control equipment


1, numerical control equipment requires to avoid wet, dusts and corrosive gas sites.


2, avoid direct sunlight and other thermal radiation. Precision CNC equipment must be kept away from large vibrating equipment, such as punching machines, forging equipment, etc.


3, the operation temperature of the equipment should be controlled between 15 degrees and 35 degrees. Precision machining temperature should be controlled at around 20 degrees, and temperature fluctuation must be strictly controlled.


4. In order to avoid the influence of large fluctuation of power supply (greater than positive and negative 10%) and possible instantaneous interference signal, the numerical control equipment usually uses special line power supply (such as using the low voltage distribution room separately for the use of CNC machine tools), adding voltage stabilizing device and so on, which can reduce the noise and electrical interference of the power supply quality.


Daily processing precision maintenance


1, after starting, it must be pre heated for about 10 minutes before processing; the machine that is not used for a long time should extend the preheating time.


2, check whether the oil road is unimpeded;


3. Turn the worktable and saddle into the center of the machine before shutting down (moving the three axis to the middle position of each axis).


4. The machine tools keep dry and clean.


Daily maintenance


1, cleaning and cleaning machine dust iron dust Daily: including machine control panel, spindle cone hole, cutter car, cutter head and cone handle, knife arm and knife bin, knife bin, rotary tower, XY shaft sheetmetal shield, flexible hose in machine tool, tank chain device, chip slot and so on.


2, check the lubricating oil level to ensure machine lubrication.


3, check the coolant in the coolant box is sufficient, not enough to add in time.


4. Check whether the air pressure is normal.


5. Check whether the air blowing is normal in the inner cone hole of the spindle, wipe the taper hole in the spindle with clean cotton cloth and spray light oil.


6, clean the knife storage knife arm and cutter, especially the knife claw;


7, check all the lights, whether the warning lights are normal.


8. Check the leakage of the oil pressure unit tube.


9. Machine tools are cleaned and cleaned every day after work.


10, keep the environment around the machine neat and tidy.


Weekly maintenance


1, clean the heat exchanger air filter, cooling pump, lubricating oil filter screen;


2, check whether the tool bolt is loose and whether the knife handle is clean.


3. Check whether the mechanical origin of the three axis is offset;


4, check the tool magazine movement or tool magazine turning smoothly.


5. If there is an oil cooler to check the oil cooling oil, if it is lower than the scale line, please add the oil and cold oil in time.


6, clean the impurities and moisture in the compressed gas, check the oil in the oil mist separator, check whether the work of the solenoid valves are normal, and check the seal in the pneumatic system, because the air system is directly affected by the change of the knife and the lubrication system.


7, prevent dust dirt into the interior of the numerical control device. Oil fog, dust and even metal powder are usually found in the air of the machine adding workshop. Once they fall on the circuit board or electronic devices in the CNC system, the insulation resistance between the components can be reduced, and even the components and circuit boards are damaged.


Monthly maintenance


1. Check the track lubrication condition and ensure that the track surface must be well lubricated.


2. Check, clean the limit switch and touch block.


3. Check whether the oil in the tool cylinder is enough or not to add in time.


4, check the signs on the machine and whether the warning nameplate is clear.


Half year maintenance


1, open the shaft anti chip shield, clean the shaft oil pipe joint, ball guide screw, three axis limit switch, and check whether it is normal. Check the effect of the hard rail scraper on each axis is good.


2. Check whether the servomotor and head of each axis are running normally and whether there is abnormal sound.


3. Replace oil pressure unit oil and tool reducer.


4. Test the clearance of each shaft and adjust the compensation amount if necessary.


5. Clean the dust in the electric box (ensure the machine is closed).


6, check the contact points, connectors, sockets, switches normally.


7, check whether all keys are sensitive and normal.


8, check and adjust the mechanical level.


9. Cleaning the cutting water tank and replacing the cutting fluid.