Rotor balancing devices

Details Rotor balancing devices Rotor balancing devices

1976-09-29

1978-01-31

Scott, Samuel

Machine element or mechanism

Elements

Flywheel, motion smoothing-type

33 84, 64 1V, F16F 1522, F16C 100, F16C 300

Patent

active

040709221

ABSTRACT:
The rotor balancing device disclosed herein comprises a cylindrical cup-shaped housing for mounting in a hollow rotor to be balanced having a central pivot on which two bushes are mounted. Two bob weights are connected by tension springs or other restraining devices to the two respective bushes to rotate about a pivot within the housing wall. The inner side of the housing wall and/or the weights have a coating of a contact or thermally activated adhesive. The restraining force of the tension springs is such that when the shaft in which the balancing device is mounted is rotated to a speed between natural frequencies of the vibration of the shaft and is nearer the lower frequency (i.e. in a mass controlled state) so that the weights in the balancing device assume positions in which any out-of-balance in the shaft is counter balanced by the weights, the springs are extended sufficiently to allow the weights to contact the inner side of the housing and are secured thereto permanently by the adhesive to balance the shaft permanently.

REFERENCES:
patent: 829251 (1906-08-01), Booraem
patent: 986978 (1911-03-01), Heine
patent: 2722848 (1955-11-01), Stein
patent: 3234644 (1966-02-01), Hollander
patent: 3659434 (1972-05-01), Wolfe
patent: 3939020 (1976-02-01), Caramanian et al.

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