Cause Of Failure Of Universal Drive Balancing Machine
Influence of workpiece
Calibration of workpieces imbalance exceeds the balance machine itself minimum achievable residual unbalance amount of capacity requirements, is balancing machine balancing accuracy can not meet the requirements of the balance of a workpiece.
The workpiece itself bearing at the neck of the roundness is not good, the surface roughness is too low.
Workpiece stiffness of the poor, in high-speed rotation deformation caused by quality deviation, or the workpiece itself have not fixed parts in rotating movement or loose.
After the balance of rotor in actual use will appear obvious vibration, this is not the rotor imbalance caused by the, but, due to the elliptic or rotor structure exist differences in stiffness caused by produce harmonic, electromagnetic excitation vibration caused by the rotor shaft neck to, bladed rotor in rotating process middle angry eddy current effect and resonance of the system caused by the.
Due to other devices connected to the grid frequent start caused by power fluctuation and noise influence or because of the support roller and rotor shaft neck both diameter is similar and the beat frequency interference. The difference between the diameter of the roller and the diameter of the workpiece must be greater than 20%.
Due to check without rotor shaft neck and use the core technology of the shaft itself is unbalanced or mandrel installation and support at the coaxiality error, and core shaft matched with the rotor clearance error caused by rotor balance when using repeated assembly of school or have a huge imbalance.
The actual working state of the rotor of the work piece and the state of the balance check is not consistent.
Workpiece rotor unbalance correction, the aggravation or to the centroid position and balance machine measurement shows the correction of the position deviation.
Influence of balancing machine
1 the left and right supporting points are high or low, so that the rotor or the left and right side of the rotor or the shaft neck plane is rubbed with the support.
2 the supporting block is severely worn or the roller is increased.
3 the supporting place has the dirt, does not add the lubricating oil.
4. Installation of the foundation of the balancing machine not to conform to requirements and connected with the bottom of the face pad, anchor bolts not tightened, or put on the floor, cause resonance.
5 the output signal of the sensor is not normal.
6 fastening screws of the parts that can move on the supporting frame are not fixed.
7 transmission belt does not meet the requirements, there is a clear joint.
8 head of the positive and negative balance without photoelectric light paper, photoelectric head mirror, photoelectric position deviation caused by angle.