Method and means for balancing rotors

Details Method and means for balancing rotors Method and means for balancing rotors

F - Mech Eng,Light,Heat,Weapons

16

C

74/278

F16C 15/00 (2006.01) F16F 15/36 (2006.01) G01M 1/36 (2006.01) G11B 33/08 (2006.01)

Patent

CA 2026738

A method is described for balancing and then retaining a rotatable unit in a dynamically balanced condition. In each end of the unit, there is an annular channel concentric with the rotational axis encircled by a flexible rim. A plurality of balls of substantially identical size and weight are inserted in an outer portion of each channel in which the balls are freely movable. While the unit is rotated at a speed above resonance, a balancing instrument is used to determine the mass magnitude and angle necessary to dynamically balance the unit. Then the balls are circumferentially relocated by vector balancing to provide mass at points equivalent to the determined mass and angle. The relocated balls are then forced axially past an interference ridge and into an inner portion of the respective channel in which the rim is flexed and the balls are held against movement.

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