| 摘要 |
PURPOSE: A balancing machine for a rotor and a method thereof are provided to improve the precision of the measurement since the measuring error is prevented by randomly selecting several rotation velocities in a wide range through the whole process. CONSTITUTION: A balancing machine(1') for a rotor which finds unbalance mass in a sample laid on a frame(3') for compensating an unbalance mass to keep equilibrium of the rotor(2), includes an unbalance sensing element having non-contacting type gap sensors(12') for carrying out many-sided measurement of a rotation vibration amount (amplitude and phase) of the sample at desired positions on at least three surfaces or more when the sample(rotor) is rotating, and a computer analysis element(16') incorporating analysis algorithm capable of compensating the unbalance amount of the sample on the more than three surfaces on the basis of the measured values, wherein the unbalance sensing element further includes an automatic shutoff element for automatically shutting off power supply when the vibration amount of the operating rotor reaches a threshold value, and a velocity controller(14') for controlling an AC motor(11') to control velocity of the rotor.
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