The concept of dynamic balancing machine
Published:
2019-05-25 10:31
Balancing machine is used to measure the rotor imbalance of the machine.In order to improve the mass distribution of the balanced rotor, the vibration of the shaft neck or the force acting on the bearing can be reduced to the specified range when the rotor rotates.The key function of the balancing machine is to detect and modify the work of other machine equipment or by hand.But the modern balance machine often contains correction device, for this reason, can not only detect the imbalance of the rotor, but also to implement balance correction.
Because the balance machine structure, principle, detection and display mode and balance object is not the same, the balance machine type is also many.
As the rotor unbalance is usually divided into static unbalance and dynamic unbalance, balance machine is also relatively divided into static balance machine and dynamic balance machine.The former is used to detect the static unbalance of the rotor.The latter is used to detect the dynamic unbalance of the rotor, and can also be used to detect the special situation of the static unbalance or even unbalance of the rotor.
According to the principle of unbalance detection balance machine can be divided into gravity balance machine and centrifugal force balance machine.The former is a balancing machine which detects the rotor's static unbalance with the help of the rotor's gravity moment when the rotor is not rotating.The latter is in the case of rotor rotation, by means of detecting the vibration of the supporting system caused by the unbalanced centrifugal force of the rotor or the dynamic load supported by the rotor to confirm the unbalanced balancing machine rotor.Dynamic balancing machine is also referred to as centrifugal balancing machine.Centrifugal balancing machine according to its structure and technical characteristics also have the following classification:
According to the mechanical characteristics of rotor - support system, there are soft support balancing machine and hard support balancing machine.The former refers to the balancing machine whose balancing speed is higher than the natural frequency of the rotor-supporting system.The latter refers to the balance speed is less than the natural frequency of the rotor - supporting system balance machine.
According to the balancing machine rotor axis classification of horizontal balancing machine and vertical balancing machine.The former refers to the balancing machine whose rotor axis is horizontal;The latter refers to the balancing machine in which the axis of the rotor is erected.
According to the main USES of balancing machine classification of general balancing machine and special balancing machine.The former refers to the rotor weight and speed within the prescribed range to balance a variety of rotor balance machine;The latter refers to the specified rotor mass and speed range, can only balance a certain type of rotor balancing machine.
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