How to maintain the common parts of engineering plastics processing center?
【Case summary】：Engineering plastics processing center, as a highly automated processing equipment, will have troubles of one kind or another when it is used for a long time or mis-operated. Therefore, we must do a good job in daily maintenance. |
Engineering plastics processing center, as a highly automated processing equipment, will have troubles of one kind or another when it is used for a long time or mis-operated. Therefore, we must do a good job in daily maintenance.
1. Servo motor and spindle motor part of engineering plastic processing center
Servo motors and control systems are the key parts of the machine tool's power source and precision control, and focus on noise and temperature rise. If the noise or temperature rise is too large, it is necessary to find out whether it is a mechanical problem such as a bearing or a parameter setting problem of the matching amplifier, and take corresponding measures to solve it. If the servo shaft is moving abnormally, it may be caused by the mechanical noise caused by the lead screw, the coupling, and the servo motor. The motor of the vertical machining center can be separated from the coupling and the motor can be operated separately. If the motor is still noisy, adjust the speed loop gain and position loop gain appropriately to make the motor silent. If there is no noise, it is judged that the concentricity of the lead screw and the coupling is the problem. Correct the concentricity again and connect it to the motor. The problem can generally be eliminated
2. Measurement feedback components of CNC machining center
Measurement feedback parts include encoders, grating scales, etc. Always check whether the connection of each component is loose, whether it is contaminated by oil or dust. Dust and small iron filings may damage such components
3. Electrical control part of CNC machining center
Always check whether the external three-phase power supply voltage connected to the machine tool is normal; check whether the electrical components are connected well; use the CRT to display the diagnostic screen to check whether the various switches are effective; check whether the relays and contactors work normally and whether the contacts are good; thermal relays, Whether the protective components such as arc suppressor are effective; check whether the internal components of the electrical cabinet of the vertical machining center are overheated. For poor contact of the contactor, the contactor can be disassembled, the high-temperature oxide on the surface of the contact can be frustrated with a small file, and then the debris can be wiped out with absorbent cotton and alcohol, reassembled, and then the contact can be checked with a multimeter. Continuity test
4. The control part of the CNC system of the engineering plastics processing center
The control system includes numerical control unit, power supply module, I/O interface, servo amplifier, spindle amplifier, operation panel, display, etc. The maintenance is mainly to check whether the relevant voltage value is within the specified range; whether the electrical component connection is loose; whether the fan of each functional module is running normally, and to remove the dust on the fan and the dust filter.
