| 摘要 |
PROBLEM TO BE SOLVED: To improve the correction accuracy and shorten the time of the whole correcting work by providing high-accuracy unbalance quantity without relying on the experience and intuition of an operator. SOLUTION: In this static balance correction method for an impeller having an unbalance position detection process which freely and rotationally moves an impeller 1 about the axial center by the dead weight and detects a circumferential position where the weight of the impeller is unbalanced by stop of its free rotational movement, an unbalance quantity detection process which detects the unbalance quantity in its circumferential position, and an unbalance removal process which uniformizes the weight balance about the axial center of the impeller 1 by removing the base metal of the impeller 1 by a quantity equivalent to the unbalance quantity, the impeller 1 is made to stop after forcedly and rotationally moving by 90 deg. from the stop position of the free rotational movement in the unbalance quantity detection process so that a torque T generated by the dead weight is detected in releasing the impeller 1 again from this stop position. |
