Manhart Fault diagnosis and treatment of upper moving torsion axis CNC bending machine?

**Fault diagnosis and treatment of upper moving torsion axis CNC bending machine**
1. Mechanical faults
Mechanical faults mainly involve the moving parts and transmission mechanism of the bending machine. Common faults include excessive clearance between the slider and the guide rail, slider jamming, and failure of the rear gauge transmission.
**1. Excessive clearance between the slider and the guide rail**
Phenomenon: The slider shakes or makes noise during movement.
Diagnosis: Check the clearance between the slider and the guide rail. If it exceeds the normal range, it needs to be adjusted.
Treatment: Adjust the clearance between the slider and the guide rail to ensure that it is within the allowable range.
**2. Slider jam**
Phenomenon: The slider suddenly stops or cannot move during movement.
Diagnosis: Check whether there are foreign objects or damage to the slider, guide rail, transmission system, etc.
Treatment: Remove foreign objects, replace damaged parts, and ensure that the transmission system is unobstructed.
**3. Failure of rear gauge transmission**
Phenomenon: The rear gauge cannot move according to the set position.
Diagnosis: Check whether the rear gauge transmission mechanism, including the motor, reducer, chain, etc., is intact.
Treatment: Replace damaged parts and adjust the transmission mechanism to normal working state.
2. Hydraulic faults
Hydraulic faults mainly involve the hydraulic system and oil circuit of the bending machine. Common faults include no pressure in the hydraulic system and too slow return speed of the slider.
**1. No pressure in the hydraulic system**
Phenomenon: The hydraulic system cannot provide enough pressure, resulting in the slider being unable to move.
Diagnosis: Check whether the oil pump, oil tank, oil pipe, oil pressure gauge and other components are intact and whether the oil circuit is unobstructed.
Treatment: Replace damaged parts, clean the oil circuit, and ensure the normal operation of the hydraulic system.
**2. Slider return speed is too slow**
Phenomenon: The slider is too slow when returning, affecting production efficiency.
Diagnosis: Check whether the quality and oil pressure of the hydraulic oil are normal, and check whether the return cylinder is damaged.
Treatment: Replace the hydraulic oil, adjust the oil pressure, and replace the damaged return cylinder.
3. Electrical system faults
Electrical system faults mainly involve the control system and circuit of the bending machine. Common faults include low-voltage circuit breaker tripping after the oil pump is started, no output of PLC, etc.
**1. The low-voltage circuit breaker trips after the oil pump starts**
Phenomenon: After the oil pump starts, the low-voltage circuit breaker trips immediately, causing the hydraulic system to fail to work.
Diagnosis: Check whether the circuit connection is normal and whether the low-voltage circuit breaker is damaged.
Handling: Repair the circuit connection and replace the damaged low-voltage circuit breaker.
**2. PLC has no output**
Phenomenon: The PLC cannot control the movement of the equipment, causing the equipment to fail to work properly.
Diagnosis: Check whether the PLC program is correct, whether the input and output modules are intact, and whether the power supply is normal.
Handling: Correct program errors, replace damaged input and output modules, and ensure that the PLC works properly.
IV. Servo communication failure
Servo communication failure mainly involves the servo system and communication interface of the bending machine. Common faults include servo motor failure to start, position feedback error, etc.
**1. Servo motor failure to start**
Phenomenon: The servo motor cannot start according to the instruction.
Diagnosis: Check whether the servo drive, motor, communication interface, etc. are intact, and whether the communication parameters are correct.
Handling: Replace damaged parts, adjust communication parameters, and ensure the normal operation of the servo system.
**2. Position feedback error**
Phenomenon: Although the servo motor can start, the position feedback does not match the command.
Diagnosis: Check whether the position sensor, feedback circuit, etc. are intact and whether the communication is stable.
Handling: Replace damaged parts, repair the feedback circuit, and ensure accurate position feedback.
V. Axis movement and return to original problem
Axis movement and return to original problem mainly involve the coordinate axis and return to original function of the bending machine. Common faults include abnormal axis movement and inability to return to original.
**1. Abnormal axis movement**
Phenomenon: The coordinate axis vibrates and deflects during movement.
Diagnosis: Check whether the drive, motor, transmission system, etc. are intact and whether the parameter settings are correct.
Handling: Replace damaged parts, adjust parameter settings, and ensure that the coordinate axis moves normally.
**2. Unable to return to original**
Phenomenon: The equipment cannot automatically return to the initial position.
Diagnosis: Check whether the return to original sensor, limit switch, etc. are intact and whether the return to original parameter settings are correct.
Handling: Replace damaged parts, adjust the return to original parameter settings, and ensure that the equipment can return to original normally.