The dynamic balance detection and correction of the motor rotor is an effective method to reduce the operating noise of the motor. In the process design of rotor dynamic balance correction, determining the total remaining unbalance of the motor rotor and distributing the total remaining unbalance to several correction planes are the key to rotor dynamic balance process design
Dynamic balance tester:
The dynamic balance tester can be used for supporting the production of dynamic balance machines, renovating old dynamic balance machines, and conducting on-site dynamic balance tests. In recent years, with the advancement of technology in the mechanical industry, the rotational speed of rotating machinery has been increasing, and people have higher requirements for the vibration and other performance of such products. An important way to improve this performance is to improve the accuracy and efficiency of dynamic balancing. The instrument was successfully developed to address this situation. This instrument has the characteristics of high precision, high accuracy, simple operation, and easy maintenance. The instrument composition is entirely controlled by integrated circuits and the latest microcontroller. Among them, automatic tracking filtering technology, automatic compensation technology, program control technology, and self-learning technology are adopted, with stable performance.
Commonly used machinery contains a large number of rotating components, such as various transmission shafts, spindles, electric motors, and turbine rotors, collectively referred to as rotary bodies. In an ideal situation, when the rotating body rotates and does not rotate, the pressure on the bearing is the same, and such a rotating body is a balanced rotating body. However, various rotating bodies in engineering, due to uneven materials or defects in the raw material, errors generated during processing and assembly, and even asymmetric geometric shapes during design, cannot cancel out the centrifugal inertia force generated by each small particle on the rotating body during rotation. The centrifugal inertia force acts on the machinery and its foundation through the bearing, causing vibration, noise, accelerating bearing wear, shortening the mechanical life, and in severe cases, can cause destructive accidents. Therefore, it is necessary to balance the rotor to achieve the allowable balance accuracy level, or to reduce the mechanical vibration amplitude generated as a result within the allowable range.
In modern times, various types of machines use various balancing methods, such as single side balancing (also known as static balancing) which often uses a balancing frame, and double side balancing (also known as dynamic balancing) which uses various dynamic balancing testing machines. Low static balance accuracy and long balance time; Although dynamic balance testing machines can balance the rotor itself well, when there is a significant difference in rotor size, different specifications of dynamic balance machines are often required, and the rotor still needs to be removed from the machine during testing. This is obviously not economical and very labor-intensive (such as the turbine rotor after major repairs). Especially the dynamic balancing machine cannot eliminate system vibrations caused by assembly or other follow-up components. Balancing the rotor under normal installation and operating conditions is commonly referred to as "on-site balancing". On site balancing can not only reduce the labor required for disassembling and assembling rotors, but also eliminate the need for a dynamic balancing machine; At the same time, due to the consistency between the experimental state and the actual working state, it is beneficial to improve the accuracy of calculating unbalance and reduce system vibration. According to the international standard ISOl940-1973 (E) "Balance accuracy of rigid rotating bodies", precision rotors with a balance accuracy of G0.4 must use on-site balancing, otherwise balancing is meaningless. In equipment maintenance, the on-site dynamic balancing technology of the entire machine demonstrates its superiority. Because the rotor inevitably undergoes varying degrees of permanent deformation after prolonged high-speed operation; Friction and wear, all of which can lead to a decrease in balance accuracy. An effective way to solve these problems is to perform on-site dynamic balancing on rotating machinery. In addition, by combining the on-site dynamic balance method of the entire machine with conventional detection methods, fault diagnosis of rotating machinery can also be carried out.
Dynamic balance tester:
The dynamic balance tester can be used for supporting the production of dynamic balance machines, renovating old dynamic balance machines, and conducting on-site dynamic balance tests. In recent years, with the advancement of technology in the mechanical industry, the rotational speed of rotating machinery has been increasing, and people have higher requirements for the vibration and other performance of such products. An important way to improve this performance is to improve the accuracy and efficiency of dynamic balancing. The instrument was successfully developed to address this situation. This instrument has the characteristics of high precision, high accuracy, simple operation, and easy maintenance. The instrument composition is entirely controlled by integrated circuits and the latest microcontroller. Among them, automatic tracking filtering technology, automatic compensation technology, program control technology, and self-learning technology are adopted, with stable performance.
Commonly used machinery contains a large number of rotating components, such as various transmission shafts, spindles, electric motors, and turbine rotors, collectively referred to as rotary bodies. In an ideal situation, when the rotating body rotates and does not rotate, the pressure on the bearing is the same, and such a rotating body is a balanced rotating body. However, various rotating bodies in engineering, due to uneven materials or defects in the raw material, errors generated during processing and assembly, and even asymmetric geometric shapes during design, cannot cancel out the centrifugal inertia force generated by each small particle on the rotating body during rotation. The centrifugal inertia force acts on the machinery and its foundation through the bearing, causing vibration, noise, accelerating bearing wear, shortening the mechanical life, and in severe cases, can cause destructive accidents. Therefore, it is necessary to balance the rotor to achieve the allowable balance accuracy level, or to reduce the mechanical vibration amplitude generated as a result within the allowable range.
In modern times, various types of machines use various balancing methods, such as single side balancing (also known as static balancing) which often uses a balancing frame, and double side balancing (also known as dynamic balancing) which uses various dynamic balancing testing machines. Low static balance accuracy and long balance time; Although dynamic balance testing machines can balance the rotor itself well, when there is a significant difference in rotor size, different specifications of dynamic balance machines are often required, and the rotor still needs to be removed from the machine during testing. This is obviously not economical and very labor-intensive (such as the turbine rotor after major repairs). Especially the dynamic balancing machine cannot eliminate system vibrations caused by assembly or other follow-up components. Balancing the rotor under normal installation and operating conditions is commonly referred to as "on-site balancing". On site balancing can not only reduce the labor required for disassembling and assembling rotors, but also eliminate the need for a dynamic balancing machine; At the same time, due to the consistency between the experimental state and the actual working state, it is beneficial to improve the accuracy of calculating unbalance and reduce system vibration. According to the international standard ISOl940-1973 (E) "Balance accuracy of rigid rotating bodies", precision rotors with a balance accuracy of G0.4 must use on-site balancing, otherwise balancing is meaningless. In equipment maintenance, the on-site dynamic balancing technology of the entire machine demonstrates its superiority. Because the rotor inevitably undergoes varying degrees of permanent deformation after prolonged high-speed operation; Friction and wear, all of which can lead to a decrease in balance accuracy. An effective way to solve these problems is to perform on-site dynamic balancing on rotating machinery. In addition, by combining the on-site dynamic balance method of the entire machine with conventional detection methods, fault diagnosis of rotating machinery can also be carried out.
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