In theory, soft support balancing machines can achieve higher testing accuracy; However, this can only be distinguished in extremely precise tests. For transmission shaft balancing machines, the accuracy that hard supports can achieve far exceeds practical requirements.
Dynamic balancing machines are divided into two types: soft support and hard support: soft support: the amplitude is proportional to the eccentricity of the mass. Hard support: The amplitude is proportional to the centrifugal force.
The comparison between the two shows that the swing of the soft support balancing machine is relatively soft. During the process of starting and stopping the transmission shaft, there will be significant oscillations in the soft supported pendulum, while the hard supported pendulum does not exhibit this phenomenon. If it is found that the accuracy of a transmission shaft balancing machine cannot meet the requirements, it must be the result of other factors. Among the factors that affect balance accuracy, soft and hard support are only a negligible factor.
1. Principle: The hard support system has high rigidity and detects imbalance through force measurement; The rigidity of soft support is relatively small, and unbalance is measured by measuring vibration.
2. Measurement method: Hard supported capacitive sensor; Soft supported movable coil type sensor.
3. Natural frequency of support: The natural frequency of hard support is higher than the balance speed, while the natural frequency of soft support is lower than the balance speed.
4. The sensitivity of the measurement is directly proportional to the speed W ^ 2 of the hard support, and directly proportional to the speed W of the soft support.
5. Suitable for rotor range: rotors with large initial unbalance on hard supports, rotors with lighter soft supports, and rotors with very high operating speeds.
Dynamic balancing machines are divided into two types: soft support and hard support: soft support: the amplitude is proportional to the eccentricity of the mass. Hard support: The amplitude is proportional to the centrifugal force.
The comparison between the two shows that the swing of the soft support balancing machine is relatively soft. During the process of starting and stopping the transmission shaft, there will be significant oscillations in the soft supported pendulum, while the hard supported pendulum does not exhibit this phenomenon. If it is found that the accuracy of a transmission shaft balancing machine cannot meet the requirements, it must be the result of other factors. Among the factors that affect balance accuracy, soft and hard support are only a negligible factor.
1. Principle: The hard support system has high rigidity and detects imbalance through force measurement; The rigidity of soft support is relatively small, and unbalance is measured by measuring vibration.
2. Measurement method: Hard supported capacitive sensor; Soft supported movable coil type sensor.
3. Natural frequency of support: The natural frequency of hard support is higher than the balance speed, while the natural frequency of soft support is lower than the balance speed.
4. The sensitivity of the measurement is directly proportional to the speed W ^ 2 of the hard support, and directly proportional to the speed W of the soft support.
5. Suitable for rotor range: rotors with large initial unbalance on hard supports, rotors with lighter soft supports, and rotors with very high operating speeds.
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