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Two Plane Balancing of a Conical Rotor Driven By Vertical Belt System Designed to Reduce Gyro Effect

V Deepika Poornima1 , S Adinarayana1, and B V Appa Rao2
1.Department of Mechanical Engineering, MVGRCE, Chinthalavalasa, Vizianagaram 535005, AP, India.
2.Department of Marine Engineering, Andhra University, Visakhapatnam 530003, AP, India.

Abstract—Mounting and balancing of a conical rotor is taken up reducing the gyro component which plays down the general two plane balancing technique creating error in finding out the correcting masses. Faulty result in estimating the correcting masses may be because of horizontal belt drive or gear drive or even the direct drive with misalignment. The horizontal drive will be leading to bending of the shaft length wise sufficient to precess the rotating shaft vector culminating into the gyro action. Additional components of frequencies may intrude into the balancing procedure and may disturb the phase estimation. Hence, vertical belt drive nearer to the bearing is mooted to avoid the precession of the rotating shaft. Short length belt drive and compression of the rotor supporting bracket entail lesser displacement in the vertical direction ensuring smooth transmission of power with lesser vibration disturbance. With this precaution, the correcting masses have been calculated and the final vibrations were observed to be well within limits.

Index Terms—Two plane balancing, Gyro effect, Trial masses, Correcting masses

Cite: V Deepika Poornima, S Adinarayana, and B V Appa Rao, "Two Plane Balancing of a Conical Rotor Driven By Vertical Belt System Designed to Reduce Gyro Effect," International Journal of Mechanical Engineering and Robotics Research, Vol.1, No.3, pp. 1-8, October 2012.