In theory, a soft support balancing machine can achieve higher testing accuracy; However, this can only be distinguished in extremely precise tests. For the transmission shaft balancing machine, the precision 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 frame of the soft support balancing machine is relatively soft. During the process of starting and stopping the transmission shaft, the soft supported swing frame will have significant oscillations, while the hard supported swing frame does not have this appearance. 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 supports are only a negligible element.
1. Principle: The hard support system has high rigidity and detects imbalance through force measurement; Soft support has low rigidity and can be used to measure unbalance by measuring vibration.
2. Measurement method: Hard supported capacitive sensor; Soft supported movable coil sensor.
3. Natural frequency of support: The natural frequency of hard support is higher than the equilibrium speed, while the natural frequency of soft support is lower than the equilibrium speed.
4. The measurement sensitivity of the hard support is proportional to the rotational speed W ^ 2, and the soft support is proportional to the rotational speed W.
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 frame of the soft support balancing machine is relatively soft. During the process of starting and stopping the transmission shaft, the soft supported swing frame will have significant oscillations, while the hard supported swing frame does not have this appearance. 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 supports are only a negligible element.
1. Principle: The hard support system has high rigidity and detects imbalance through force measurement; Soft support has low rigidity and can be used to measure unbalance by measuring vibration.
2. Measurement method: Hard supported capacitive sensor; Soft supported movable coil sensor.
3. Natural frequency of support: The natural frequency of hard support is higher than the equilibrium speed, while the natural frequency of soft support is lower than the equilibrium speed.
4. The measurement sensitivity of the hard support is proportional to the rotational speed W ^ 2, and the soft support is proportional to the rotational speed W.
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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