| 摘要 |
PURPOSE:To omit a work for searching a position and a size of an unbalance, and to improve the work efficiency by providing an automatic balancing element on one part or more in a plane vertical to a revolving shaft of a rotor so that the automatic balancing can be executed by a resonace point or above of a rotor system. CONSTITUTION:On a rotor body 1, an annular groove 4 is provided centering around a shaft core CC so as to be orthogonal to a shaft 2. Also, in the groove 4, two pieces of balls whose diameter is smaller than its thickness are contained. In such a state, in case automatic balancing elements (the annular groove 4, a hole 5, a ball 6, and a cover 7) are rotated, the ball 6 works as an unbalance in case of a revolving speed (a dangerous speed) N0 or below of a resonance point, and an amplitude of the rotor 1 becomes larger than the case when the ball 6 is not put in, but in case of the revolving speed exceeding the dangerous speed N0, a balancing action is executed automatically by an automatic balancing action and the amplitude goes to '0'. In such a case, the ball 6 stops relatively against the rotor 1. In such a state, when the ball 6 is fixed to the outside peripheral wall of the groove 4 by injecting an adhesive agent from an adhesive agent injecting pipe 9, the balanced state can be concerved.
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