Machining Methods Used in the Balancing Process of Centrifugal Multi-Blade Fans
Unbalance detected during the balancing process of centrifugal multi-blade fans is eliminated through calibration operations following measurement. During calibration, balancing weights are typically added to the lighter sections of the rotor, or heavier sections are removed. Additionally, some rotating components, such as centrifugal multi-blade fan blades and rotors with irregular shapes, may be bent to achieve balance.
General methods can be used to check for imbalance in centrifugal multi-blade fans. One method involves applying adjustment weights in the opposite direction of the imbalance; balance is achieved depending on the type of welding used. Projection welding is generally employed. The plate-shaped welded sections used have a specific width and thickness, with the length varying according to the magnitude of the imbalance. Electric welding is also commonly used to balance counterweights on standard centrifugal multi-blade fan impellers.
When balancing the rotors of small motors, the welding weight is selected based on the imbalance detected during the welding process. Rivets are sometimes used as balancing weights. Compared to other methods such as welding, this method typically achieves accurate correction. This method can be applied to blades, turbines, clutch friction plates, and similar components.
Screw holes are set at equal intervals along a circle at a specific radius on the centrifugal multi-blade fan rotor. Correction is achieved by tightening screws of varying lengths according to the amount of imbalance. This method is simple to operate.
Another method involves adding weight to the unbalanced side of the centrifugal multi-blade fan. Generally, a drill bit is used to eliminate imbalance. The bulges on the smooth surfaces of rotors such as blades, propellers, centrifugal multi-blade fan rotors, and magnets are typically corrected by grinding; turbines and large gears may also be modified using this method.
Unbalance detected during the balancing process of centrifugal multi-blade fans is eliminated through calibration operations following measurement. During calibration, balancing weights are typically added to the lighter sections of the rotor, or heavier sections are removed. Additionally, some rotating components, such as centrifugal multi-blade fan blades and rotors with irregular shapes, may be bent to achieve balance.
General methods can be used to check for imbalance in centrifugal multi-blade fans. One method involves applying adjustment weights in the opposite direction of the imbalance; balance is achieved depending on the type of welding used. Projection welding is generally employed. The plate-shaped welded sections used have a specific width and thickness, with the length varying according to the magnitude of the imbalance. Electric welding is also commonly used to balance counterweights on standard centrifugal multi-blade fan impellers.
When balancing the rotors of small motors, the welding weight is selected based on the imbalance detected during the welding process. Rivets are sometimes used as balancing weights. Compared to other methods such as welding, this method typically achieves accurate correction. This method can be applied to blades, turbines, clutch friction plates, and similar components.
Screw holes are set at equal intervals along a circle at a specific radius on the centrifugal multi-blade fan rotor. Correction is achieved by tightening screws of varying lengths according to the amount of imbalance. This method is simple to operate.
Another method involves adding weight to the unbalanced side of the centrifugal multi-blade fan. Generally, a drill bit is used to eliminate imbalance. The bulges on the smooth surfaces of rotors such as blades, propellers, centrifugal multi-blade fan rotors, and magnets are typically corrected by grinding; turbines and large gears may also be modified using this method.
