Rotor balancing method and device

The invention relates to rotating body dynamic balancing engineering and can be used for determining and correcting a rotor unbalance, in particular rigid rotors. The inventive method makes it possible to measure a rotor unbalance with a high accuracy on two balance reference planes. Said method is based on the oscillating movement of the rotor and of a balanced body coaxial thereto with respect of a fixed point located on the common axis of the rotor. In order to improve the accuracy of the method, forces opposite to the body angular oscillations with respect to the balanced body axis are tangentially applied to the balanced body simultaneously at each instant on a plane crossing the fixed point. In order to eliminate the reciprocal influence of the unbalance reference planes on the measurable parameters, at one measuring stage, said fixed point is embodied in the form of the point of intersection of the rotor axis and one of the unbalance reference planes thereof and at another measuring stage, the rotor is