In fact, what we usually refer to as a balancing machine is usually a dynamic balancing machine. Balancing machines can be divided into single sided balancing machines and double sided balancing machines according to the number of calibration planes. A single sided balancing machine can only measure the imbalance (static imbalance) on one plane. Although it is measured while the rotor is rotating, it still belongs to the static balancing machine. The double-sided balancing machine can measure dynamic imbalance, as well as static imbalance and even imbalance, and is generally called a dynamic balancing machine.
A dynamic balancing machine measures imbalance based on the vibration of the support caused by rotor imbalance or the vibration force acting on the support while the rotor is rotating. Dynamic balancing machines can be divided into soft support balancing machines and hard support balancing machines according to their different support characteristics.
A soft support balancing machine is called when the balancing speed is higher than the natural frequency of the rotor support system. The support stiffness of this balancing machine is small, and the signal detected by the sensor is proportional to the vibration displacement of the support.
A hard support balancing machine is called a balancing machine where the balance speed is lower than the natural frequency of the rotor support system. This type of balancing machine has a high support stiffness, and the signal detected by the sensor is proportional to the vibration force of the support.
The main performance of a dynamic balancing machine is represented by two comprehensive indicators: the minimum achievable residual imbalance and the reduction rate of imbalance. The former is the minimum residual imbalance that the dynamic balance function can achieve for the rotor, and it is an indicator to measure the highest balance capacity of the dynamic balance machine; The latter is the ratio of the reduced imbalance after one correction to the initial imbalance, which is a measure of balance efficiency and is generally expressed as a percentage.
A dynamic balancing machine measures imbalance based on the vibration of the support caused by rotor imbalance or the vibration force acting on the support while the rotor is rotating. Dynamic balancing machines can be divided into soft support balancing machines and hard support balancing machines according to their different support characteristics.
A soft support balancing machine is called when the balancing speed is higher than the natural frequency of the rotor support system. The support stiffness of this balancing machine is small, and the signal detected by the sensor is proportional to the vibration displacement of the support.
A hard support balancing machine is called a balancing machine where the balance speed is lower than the natural frequency of the rotor support system. This type of balancing machine has a high support stiffness, and the signal detected by the sensor is proportional to the vibration force of the support.
The main performance of a dynamic balancing machine is represented by two comprehensive indicators: the minimum achievable residual imbalance and the reduction rate of imbalance. The former is the minimum residual imbalance that the dynamic balance function can achieve for the rotor, and it is an indicator to measure the highest balance capacity of the dynamic balance machine; The latter is the ratio of the reduced imbalance after one correction to the initial imbalance, which is a measure of balance efficiency and is generally expressed as a percentage.
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