Balancing device and method for a rotating body
First Claim
1. A balancing device for balancing a rotating body having an axis while in operation by asymmetrical thermal deformation comprisinga. means for sensing the phase and magnitude of unbalance in said rotating body,b. transducing means, connected to said sensing means, for providing a signal representative of the phase and magnitude of said unbalance,c. an energy source for supplying energy pulses to said rotating body for local asymmetric heating to case thermal deformation of the axis of the body without removing or adding any material from or to the body,d. control means, responsive to said transducing means, for controlling said energy source to control the phase and amount of said energy pulses, supplied to said rotating body, andsaid control means controlling said energy source to supply energy pulses to said rotating body at a position opposite said unbalance.
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Abstract
A balancing device and method for balancing a rotating body during operation. The device and method detects the phase and amount of unbalance and provides signals in synchronism with the unbalance. Local heating of the rotating body is provided to counteract the unbalance by thermal deformation of the axis of the body without removing material. The phase and amount of the local heating are controlled in relation to unbalance detected.
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Citations
9 Claims
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1. A balancing device for balancing a rotating body having an axis while in operation by asymmetrical thermal deformation comprising
a. means for sensing the phase and magnitude of unbalance in said rotating body, b. transducing means, connected to said sensing means, for providing a signal representative of the phase and magnitude of said unbalance, c. an energy source for supplying energy pulses to said rotating body for local asymmetric heating to case thermal deformation of the axis of the body without removing or adding any material from or to the body, d. control means, responsive to said transducing means, for controlling said energy source to control the phase and amount of said energy pulses, supplied to said rotating body, and said control means controlling said energy source to supply energy pulses to said rotating body at a position opposite said unbalance.
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6. A method for balancing a rotating body while in operation by local asymmetric heating and thus thermal deformation of its axis, comprising the steps of:
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a. detecting phase and amount of an unbalance in said body, b. converting said detected unbalance into a phase and amount responsive signal, and c. asymmetrically heating predetermined parts of said rotating body in dependence on said signal, by local application of energy pulses without removing material from said body. - View Dependent Claims (7, 8, 9)
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Specification