Patent ID: 9494479
Filing Date: 2016-11-15
CPC Classification: G01M

Claim Text:
1. A drive shaft balancing machine for dynamic balancing of a drive shaft having flanges connected by joints to its ends, the drive shaft balancing machine comprising a machine bed, at least two pedestals arranged on the machine bed, each pedestal respectively including a second vibration sensor mounted to the upper part of at least one pedestal of the at least two pedestals, the second vibration sensor detecting the vibrations of the upper part in at least a second degree of freedom of motion, and an evaluating circuit configured to receive and store the first and second vibration signals of the first and the second vibration sensors and configured to compute an unbalance value of the drive shaft by using the first and second vibration signals as parameters for calculation of a calibrating matrix, the calibrating matrix including free parameters, the computing including transposition of equations, wherein the first and second vibration sensors are spaced longitudinally across the at least one pedestal with no other vibration sensor being disposed longitudinally across the at least one pedestal, wherein pitch vibration excitations of the upper part do not enter the unbalance value of the drive shaft computed by the evaluating circuit.