Patent ID: 6570291
Filing Date: 2003-05-27
Classification: F16F,H02K,Y10T

Abstract:
A device (4) for balancing a rotor (1), in particular for an electric motor, the rotor having an axial dimension and being provided with a plurality of recesses extending along the axial dimension for seating a rotor winding, the device (4) being used during the step of the rotor balancing method consisting in the actual balancing step involving adding of material, the device (4) being made of a non-ferromagnetic material and comprising:a body (6) having an axis (10) and; a head (5), connected to the body (6), having an enlarged section in respect to the body (6); a resilient end (7) connected to the body (6), the resilient end (7) being formed substantially in the manner of a fork, consisting of a portion of the body (6) the resilient end having an opening (8) extending substantially longitudinally with respect to the axis (10) of the body and small teeth (9) on opposite sides of the longitudinal axis (10), the opening and the small teeth allowing insertion of the device (4) into one of the recesses (2) and locking therein, wherein the device (4) has a length that is greater than the axial dimension of the rotor and is insertable and self-lockable inside one of the recesses (2) in the rotor (1) to extend over the axial dimension of the rotor, and the actual balancing of the rotor (1) consists in inserting one or more of the balancing devices (4) inside the recesses (2) formed in the rotor (1).