| 摘要 |
PURPOSE:To improve the workability of dynamic balancing work, make work accurate and reduce working time by directly displaying the weights of a weight mounting part to be mounted and a weight in a display device. CONSTITUTION:The vibrations produced when a rotor 3 is rotated are converted to electric signals aL, aR by piezoelectric elements 14L, 14R, and these signals pass through high-pass filters 15L, 15R, which produce signals bL, bR. The phases of the signals bL, bR correspond to the unbalance angles of the rotor 3, and the amplitudes thereof to the rates of unbalance; therefore, they are converted to the signals indicating phases iL, iR, and amplitudes cL, cR, and are inputted to an A/D converter 19, by which they are converted to a binary digital signal (j). An arithmetic circuit 25 has the storage element inputted with a conversion table, makes the signal (l) indicating a selection of a suited weight to be mounted to a corresponding mounting hole 6 for the weight of the rotor 3 by processing the signal (j) indicating the angle of unbalance and the amt. of unbalance according to the conversion table, and outputs the same to an image display device. |
