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Rotor balancing machine accuracy requirements

Dynamic imbalance is the most common imbalance, it is a combination of static imbalance and even imbalance.

 

Unbalanced rotor after dynamic balance correction, not only eliminates the occasional imbalance, but also eliminates the static imbalance, then the center of the rotor inertia axis and the rotation axis will be exactly the same, so that the rotor to achieve balance. However, the ideal is that the fullness of reality is skinny, and it is impossible to balance an unbalanced rotor with an unbalanced amount of zero. Because of the accuracy of dynamic balancing equipment and rotor limitations. Therefore, there is a concept of balance accuracy, which is the most reasonable order of magnitude we can achieve under existing conditions, thus satisfying the requirements of production and living as well as the economic requirements.

 

 

Under what circumstances to dynamic balance verification

 

During the assembly process, the clearances generated between the parts comply with the installation standards but for the entire rotor part, the cumulative error may exceed the dynamic balancing accuracy of the rotor. Especially for some of the rotor bearing fitted with a bearing, it should be in the assembly before the dynamic balance verification.

 

Accuracy of dynamic balancing machine requirements

 

The minimum amount of remaining unbalance is the minimum remaining unbalance that can be achieved when the balancing machine balances the rotor and is the performance index for the highest balance of balancing machines.
Hard bearing balancer can be directly used on the calibration surface of the minimum remaining unbalance expressed in units of (g / mm), and some also use g / cm.

 

The least amount of remaining unbalance is affected by such factors as the type of balancing machine, the measurement method, the transmission mode, the plane separation ratio of bearing form and calibration surface, and the sensitivity of the balancing machine.

 

To make rotor balancing accuracy is high (that is, the remaining imbalance is small), we must try to exclude the factors that affect the accuracy of the imbalance. Among these factors, the balancing machine has the most influence on the transmission mode and the unbalanced transmission components. Rotor journal precision should also be strictly limited, as well as rotor parts with impeller, the center of gravity rotor is not in the center of the rotor, with a bearing sleeve and seal the use of packing rotor.

 


Rotor Automatic Balancing Machine - Rotor Dynamic Balance Process and Method

 

For a large amount of initial unbalance, the rotor with excessive vibration when rotating should be balanced with one side before the balance check to eliminate the static unbalance. Sometimes due to improper choice of the correct position of the surface (ie, the center of gravity is not within the selected calibration surface), the correction of static balance but will even unbalanced increase. Therefore, the best correction is to choose the plane of gravity in the plane to reduce occasional imbalance. If the plane of gravity is not allowed to go to heavy plane, the general should be located on both sides of the plane where the plane of gravity on the two planes. The company is located in:

 

In order to reduce the time and effort involved in the balancing operation, an attempt should be made to reduce the amount of correction, for which reason the rotor may be weighted and de-weighted if necessary after the dynamic balancing of the rotor of the balancing machine, Law of the rotor balance processing: The so-called emphasis method, that is, in the opposite direction of imbalance with calibration weight. Go heavy method is to remove some weight in the unbalanced direction, commonly used methods are: boring, drilling, chiseling, milling, grinding and so on.

 

Shanghai Jianping rotor automatic balancing machine can be a good solution to the problem of rotor imbalance, the use of dynamic balance to the weight of the processing method, you can balance the amendment of the maximum weight of 0.5 kg, a diameter of 40 mm rotor. As a professional manufacturer, Shanghai Jianping also manufactures many types of rotor balancing machines to make the rotor achieve better balance effect.