Abstract: In a method and an apparatus for balancing a grinding wheel, balancing weights on the grinding wheel remain secured to the grinding wheel in an unbalance measuring operation, and the positions at which the balancing weights are secured to the grinding wheel are stored. In a repositioning operation for compensating for measured unbalance of the grinding wheel, the influences of the forces of the balancing weights during the unbalance measuring operation are derived from the stored positions of the weights and compensated for so as to balance the ginding wheel.

Abstract: In a method and an apparatus for balancing successive rotary members, an unbalance measuring operation is carried out in one or more planes on each rotary member which is rotated at a measuring speed in a measuring run within an overall unbalance measuring time for ascertaining the required number of items of measuring information in a plurality of repetitive measuring cycles. After the elapse of a fraction of the overall unbalance measuring time the unbalance measuring operation is interrupted for an interruption time for the purposes of permitting the performance of working operations which due to vibration caused thereby could result in falsification of the unbalance measurement results, then unbalance measurement is resumed, and further interrupted, and so on in a repetitive procedure to make up the overall measurement time.

Abstract: A method and an apparatus for correcting the unbalance present in a rotor in one or several correction steps by adding or removing material only to or from given points on the rotating body on which only a limited quantity of material is available for correction, with the unbalance being resolved into components as given by the design of the rotor, with correction being carried out in one of several given components, and with the unbalance determined being eliminated in the given components as to the possibility permitting the least quantity of material to be added or removed in a minimum number of correction runs, so that finally an uninterrupted sequence of correction points is available on the rotor.