1、 The reason for balancing machine
1. The foundation for installing the balancing machine is uneven, the bottom joint surface is not compacted, the anchor bolts are not tightened, or placed on the floor, causing resonance.
2. The support block of the dynamic balancing machine is severely worn or the roller runout increases.
3. There is dirt at the support of the dynamic balancing machine and no lubricating oil has been added.
4. The left and right supports of the dynamic balancing machine have high and low positions, causing the rotor to move left and right or the journal plane to rub against the supports.
5. The output signal of the dynamic balancing machine sensor is abnormal.
6. The fastening screws at the movable parts on the support frame are not tightened.
7. The transmission belt of the balancing machine does not meet the requirements and has obvious seams.
8. The balance machine's photoelectric head is not aligned with the backlight paper, the mirror surface of the photoelectric head is blurry, and the position of the photoelectric head is skewed, causing angle deviation
2、 The reason for the workpiece
1. The requirement for correcting workpiece imbalance exceeds the ability of the balancing machine itself to achieve the minimum remaining imbalance, which means that the balancing accuracy of the balancing machine cannot meet the requirements for workpiece balance.
2. The roundness of the journal at the support of the workpiece itself is poor, and the surface roughness is too low. The stiffness of the workpiece itself is poor, causing deformation and mass deviation during high-speed rotation, or the workpiece itself has unfixed parts that move or loosen during rotation.
3. A balanced rotor will experience significant vibration in practical use, which is not caused by the rotor's own imbalance, but rather by higher-order harmonics caused by the elliptical shape of the rotor support shaft neck or differences in stiffness in the rotor structure, vibrations caused by electromagnetic excitation, the influence of eddy currents generated by the rotor with blades during rotation, and system resonance.
4. Frequent start-up of other equipment connected to the power grid can cause power fluctuations and noise, or beat frequency interference due to the similar diameters of the support roller and rotor journal. The difference between the diameter of the roller and the size of the workpiece neck should be greater than 20%.
5. It may be due to the imbalance of the process core shaft itself used to verify the rotor without a shaft neck, or the coaxiality error at the installation and support of the core shaft, as well as the clearance error between the core shaft and the rotor, resulting in significant imbalance of the balanced rotor during repeated installation or use.
The actual working state of the rotor of the workpiece is inconsistent with the state during balance verification.
7. When correcting the imbalance of the workpiece rotor, the center of gravity of the weighted or de weighted object deviates from the correction position displayed by the balance machine measurement.
1. The foundation for installing the balancing machine is uneven, the bottom joint surface is not compacted, the anchor bolts are not tightened, or placed on the floor, causing resonance.
2. The support block of the dynamic balancing machine is severely worn or the roller runout increases.
3. There is dirt at the support of the dynamic balancing machine and no lubricating oil has been added.
4. The left and right supports of the dynamic balancing machine have high and low positions, causing the rotor to move left and right or the journal plane to rub against the supports.
5. The output signal of the dynamic balancing machine sensor is abnormal.
6. The fastening screws at the movable parts on the support frame are not tightened.
7. The transmission belt of the balancing machine does not meet the requirements and has obvious seams.
8. The balance machine's photoelectric head is not aligned with the backlight paper, the mirror surface of the photoelectric head is blurry, and the position of the photoelectric head is skewed, causing angle deviation
2、 The reason for the workpiece
1. The requirement for correcting workpiece imbalance exceeds the ability of the balancing machine itself to achieve the minimum remaining imbalance, which means that the balancing accuracy of the balancing machine cannot meet the requirements for workpiece balance.
2. The roundness of the journal at the support of the workpiece itself is poor, and the surface roughness is too low. The stiffness of the workpiece itself is poor, causing deformation and mass deviation during high-speed rotation, or the workpiece itself has unfixed parts that move or loosen during rotation.
3. A balanced rotor will experience significant vibration in practical use, which is not caused by the rotor's own imbalance, but rather by higher-order harmonics caused by the elliptical shape of the rotor support shaft neck or differences in stiffness in the rotor structure, vibrations caused by electromagnetic excitation, the influence of eddy currents generated by the rotor with blades during rotation, and system resonance.
4. Frequent start-up of other equipment connected to the power grid can cause power fluctuations and noise, or beat frequency interference due to the similar diameters of the support roller and rotor journal. The difference between the diameter of the roller and the size of the workpiece neck should be greater than 20%.
5. It may be due to the imbalance of the process core shaft itself used to verify the rotor without a shaft neck, or the coaxiality error at the installation and support of the core shaft, as well as the clearance error between the core shaft and the rotor, resulting in significant imbalance of the balanced rotor during repeated installation or use.
The actual working state of the rotor of the workpiece is inconsistent with the state during balance verification.
7. When correcting the imbalance of the workpiece rotor, the center of gravity of the weighted or de weighted object deviates from the correction position displayed by the balance machine measurement.
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