On-site dynamic balancing is the process of balancing the rotor on its own bearings and frames rather than on a dynamic balancing machine. In other words, at the work site or in the machine test site, the vibration loading of the rotor is not satisfactory. At this time, the dynamic balance of the machine running vibration must be improved to achieve on-site dynamic balance. Under such conditions, the data required to perform on-site dynamic balancing is obtained from the unbalanced vibration of the support structure and the rotor shaft caused by measuring rotor imbalance. The purpose of on-site dynamic balance is to make the mechanical vibration caused by the imbalance, the dynamic winding of the shaft and the force acting on the bearing reach the allowable value, so the evaluation of the thread dynamic balance is generally measured by the vibration standard of the on-site machine operation. On-site balance concept and necessity Commonly used machines contain a large number of rotating parts, such as various drive shafts, spindles, motors and turbine rotors, etc., collectively referred to as the rotating body. In the ideal case, when the rotating body rotates and does not rotate, the pressure generated on the bearing is the same, and such a rotating body is a balanced rotating body. However, various kinds of revolving bodies in the engineering, due to uneven material or blank defects, errors in processing and assembly, and even asymmetrical geometric shapes during design, make the rotating body rotate every time. The centrifugal inertial forces generated by the tiny mass points cannot cancel each other out. The centrifugal inertial force acts on the machine and its foundation through the bearing, causing vibration, generating noise, accelerating bearing wear, shortening the mechanical life, and causing destructive accidents in severe cases. To this end, the rotor must be balanced to an allowable level of balance accuracy or to reduce the resulting mechanical vibration amplitude to an allowable range. Pet Bowls And Feeders
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The concept of balancer and the necessity of on-the-spot balance