Troubleshooting of four axis machining

Analysis and processing of four axis machining: the alarm may be caused by the poor SQL3 of the table loosening position sensor or the CNC did not receive the clamping signal of the turntable, because similar faults occurred before were caused by poor plug contact. To confirm, open the side cover of the turntable, and close a small saw blade to the end of SQ13: the SQL3 lamp is on, which proves that SQL3 is normal. Meanwhile, the data of PLC and ladder iaxbul can be highlighted, indicating that the system can receive signals. Therefore, it is suspected that there are problems in the hydraulic part, such as insufficient hydraulic pressure, oil leakage of hydraulic cylinder rising the turntable, mechanical stagnation when the turntable rises, which makes the turntable rise not in place. The hydraulic pressure of four axis machining is checked. When the machine stops moving, the pressure is 5.5mpa. When the turntable or machine is manually operated, it is found that the pointer of the system pressure gauge is shaking obviously and the hydraulic pump has obvious noise. Therefore, it is suspected that the hydraulic pump inhales air: check the oil level of the oil tank and find that the oil tank is empty. After filling the tank, turn the turntable again, normal. The variable pump is used to supply oil in the hydraulic system. When the hydraulic pressure is not operated, the system keeps pressure, the hydraulic pump absorbs less oil, and the oil level of the oil tank basically meets the requirements. When the hydraulic pump is operated, the hydraulic pump shall supply oil. Because the oil tank is not enough, the system pressure is insufficient, which leads to the failure of the turntable to rise in place. Half an hour later, the machine alarm again, and then look at the oil level, and the oil is gone, indicating that the hydraulic system leaks oil: finally, it can find the oil pipe of the turntable rising is broken and leaking; after replacement, the fault is completely eliminated.