How does Manhart (Guangdong) CNC Machine Tool Co., Ltd. determine the fault of the torsion axis CNC bending machine?

To determine the fault of a torsion axis CNC bending machine, multiple aspects need to be comprehensively considered, including the mechanical part, hydraulic part, electrical part, and processing effect. Here are some specific judgment methods and steps:
1. * * Observing the mechanical part * *:
-Check the guide gap between the slider and the guide rail. If the gap is too large, it may cause abnormal noises. At this point, it is necessary to check the wear of the guide rail pressure plate and readjust it to meet the required clearance.
-Check if the rear material transmission has failed, which may be due to the detachment of the key strip between the transmission shaft and the synchronous belt pulley or the slipping of the synchronous belt. It is necessary to reassemble the key strip and synchronous belt, and inspect the electrical part.
-Check if the connection between the oil cylinder and the slider is loose, which may cause inaccurate bending angle or the machine cannot find the reference point. Need to recheck and tighten the connecting nuts.
2. * * Check the hydraulic part * *:
-If there is no pressure in the hydraulic system, it is necessary to check whether the solenoid coil of the proportional relief valve is powered on, whether the voltage of the proportional solenoid coil meets the requirements, and whether the three-phase power supply is phase-shifting causing the motor to reverse.
-Observe if the time pause when the slider transitions from fast to slow is too long, which may be due to insufficient filling caused by low oil level in the tank or unobstructed filling port.
3. * * Check the electrical part * *:
-For electrical faults, the method of directly testing the 24V voltage of the electromagnetic pressure valve or testing the valve core of the electromagnetic pressure valve can be used to determine whether there is a problem.
-Check if the high-pressure oil filter is blocked, and if the relevant electrical connections and signals are normal.
4. * * Observation of processing effect * *:
-If the bending angle is not accurate, it may be caused by mold wear or improper use of non adjustable molds.
-Cracks or creases in the bent lines may be caused by excessive pressure, hard metal materials, or small bending angles.
-If the equipment breaks or gets stuck, it may be caused by damage or excessive wear of the connecting rod. It is necessary to replace the damaged connecting rod and regularly check lubrication.
5. * * Pay attention to abnormal sounds and vibrations * *:
-Abnormal noise and vibration may be caused by unstable base or loose bolts, and it is necessary to inspect and tighten the base and bolts.
-Loose guide rail plates or incorrect position of the black film on the grating ruler may also cause impact sound, which needs to be checked and adjusted.
6. * * Check for other potential issues * *:
-The emission of abnormal odors or smoke may be caused by a short circuit in the power circuit or overheating of the motor. It is necessary to inspect and repair the power circuit and motor.
-If the device cannot start or stop, it may be due to power failure, control system damage, or switch failure, and relevant components need to be inspected and repaired.
In summary, to determine the fault of a torsion axis CNC bending machine, multiple aspects such as mechanical, hydraulic, electrical, and machining effects need to be comprehensively considered. By careful observation, testing, and adjustment, most common fault problems can be located and resolved. Before carrying out any maintenance operations, it is essential to ensure that the equipment has been shut down and the power has been disconnected to ensure the safety of the operators.