When a rotor is moving at a uniform speed, countless particles in the body will generate inertial force to form an inertial force system. To determine whether the rotor is a balanced rotor, it must be based on the results of its inertial force system synthesis. Whether the rotor needs static balancing or dynamic balancing machine depends on the specific situation. The weight, shape, speed, support conditions and use of the rotor are determined.
The vibration of rotor, seat to foundation system is affected by many factors, such as the vibration quality of the foundation of the seat, the rigidity of bearings and foundations, and the approximation of operating speed to various resonance frequencies. The relationship between the vibration amplitude and the residual unbalance of the rotor is not simple. Sometimes experimental methods can be used to determine many unbalances of the rotor.
At the same time, the performance indexes, specifications and characteristics of various balancing machines manufactured by the balancing machine manufacturer should also be known, which is the basis for selecting the balancing machine. According to the nomenclature of standard balancer, the "workpiece quality" of balancer is the main parameter of balancer. "Work piece quality" only represents the bearing capacity of the balancing machine support pendulum. When selecting the balancing machine, ensure that the quality of the checked work piece is not greater than that specified in the range of the balancing machine. Although safety considerations have been taken into account by the designers of the balancing machine, it should not be overloaded in use for safety reasons. If the work piece for balance checking is more than one, then it should be ensured that the quality of each work piece is not greater than that specified in the range of the balancer. Nowadays, people's requirement for safety in working environment is constantly improving, which has an impact on the multi-rotation machine, including the balancer.
In order to select the rotor balancer correctly, it is necessary to fully analyze and understand the structure, application, balance accuracy, working speed, support conditions and transmission mode of the rotating workpiece. In order to reduce vibration of rotating machinery, improve working speed, extend service life of workpiece and reduce imbalance of rotating workpiece. To achieve this goal, a suitable balancing machine is usually selected for checking the balance of rotating workpiece.
Because the varieties, shapes, weights and bearing forms of rotating workpieces requiring balancing verification vary greatly, and the requirements for balancing accuracy are also different, because when checking the balance of rotating workpieces, the appropriate balancing machine must be selected according to the rotor characteristics. If improperly selected, the balance accuracy often can not reach the expected effect, not only the work efficiency is low, but even the balance can not be carried out.