Dynamic balance correction method and automatic equipment using same

Abstract

The dynamic balance correction method comprises the following steps: acquiring a first vibration amplitude b of a rotor, wherein the relationship between the unbalanced mass alpha and the vibration amplitude A of the rotor is A = k alpha + b; acquiring a plurality of vibration amplitudes of rotation when different debugging blocks are mounted on the rotor, and calculating a coefficient k by adopting a linear regression method, wherein the obtained parameters can be used for dynamic balance correction of all rotors of the same model; rotating the to-be-corrected rotor to a rotating speed omegato obtain a second vibration amplitude A1 of the rotor; installing a trial mass block with the mass of m at a first position on the rotor, and obtaining a third vibration amplitude A2 of the rotor; calculating the mass alpha1 of the balancing weight required by dynamic balance correction and a third position of the balancing weight mounted on the rotor, wherein the clockwise angle between the connecting line of the third position and the center of the rotor and the standard line is gamma; and mounting the counterweight block at the third position. According to the method, dynamic balance adjustment can be achieved only through one-time trial weight, and the method is wide in applicability and high in correction efficiency and precision. The invention also provides automatic equipment usingthe method.

Description

technical field [0001] The invention relates to a dynamic balance correction method and automatic equipment using the method. Background technique [0002] Because the center of gravity of the rotor deviates from the axis, an unbalanced force will be generated when the rotor rotates, which will cause vibration of the rotor system, and in severe cases will lead to mechanical failure. The dynamic balance correction is to eliminate the imbalance by changing the mass distribution of the rotor so that its center of gravity returns to the axis. Dynamic balance correction is generally carried out during the manufacturing stage of the rotor, or under the actual working conditions after the rotor is installed on site. [0003] When performing dynamic balance correction, it is necessary to determine the size and position of the unbalanced amount before correction can be made. At present, after the rotor is installed on site, it is calibrated by a dynamic balance calibration instrume...

AI Technical Summary

Problems solved by technology

However, the on-site dynamic balance correction instrument obtains the vibration signal of the rotor through the vibration sensor to obtain the magnitude of the unbalance, and obtains the angular position of the unbalance through the phase detector. Therefore, it is necessary to install the vibration sensor and the phase detector on the equipment to be corrected. If There is no suitable installation space on the equipment, and additional fixtures are needed to assist in the installation

In addition, the installation and adjustment of the phase detection sensor is time-consuming and the calibration efficiency is not high. In addition, the price of special instruments is relatively high, and it is not suitable for occasions with a large number of equipment and frequent calibration

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