What are the indicators for determining the quality of a balancing machine? A balancing machine is a device used to measure the unbalance of a rotor and correct it according to its measurement results, in order to improve the mass distribution of the rotor and reduce the vibration or force acting on the bearings during rotor rotation to within the allowable range of use.
1、 The balancing machine has the following main components:
1. A support system that can support the rotor and ensure that the rotor has the necessary degrees of freedom;
2. A drive system that rotates the rotor at a certain speed;
3. A measurement and display system for measuring and indicating the amplitude and phase of rotor unbalance.
2、 There are currently several common types of dynamic balancing machines:
1. Divided by the axis direction during rotor balancing: vertical and horizontal;
2. Classified by usage scope: universal type, specialized type; Divided by driving mode: belt type, universal joint type, self driving type;
3. Divided by calibration method: manual, semi-automatic, fully automatic.
3、 The most important indicators for measuring the quality of a dynamic balancing machine are mainly the following two:
1. Minimum achievable residual unbalance: The minimum value of residual unbalance that a balancing machine can achieve for a rotor. The minimum achievable residual unbalance is a performance indicator for measuring the maximum balancing capacity of a balancing machine. Expressed in Lm or g · mm/kg. The eper of the dynamic balancing machine should be less than one-third of the minimum allowable residual unbalance (equivalent to the allowable eccentricity) required for the highest balance level of its calibrated rotor. For example, the balance accuracy level of a regular motor rotor is G6.3. If its maximum speed is 3000rpm, according to the table, its allowable eccentricity is (20~50) Lm. Taking its high limit, its allowable eccentricity is 20Lm. Therefore, the minimum allowable residual unbalance degree eper of the balancing machine is less than 6Lm, which is qualified.
2. Unequal reduction rate (URR): The ratio of the unbalanced amount reduced after one balance correction to the initial balanced amount. It is a performance indicator for measuring the balancing efficiency of a balancing machine. Usually expressed as a percentage.
1、 The balancing machine has the following main components:
1. A support system that can support the rotor and ensure that the rotor has the necessary degrees of freedom;
2. A drive system that rotates the rotor at a certain speed;
3. A measurement and display system for measuring and indicating the amplitude and phase of rotor unbalance.
2、 There are currently several common types of dynamic balancing machines:
1. Divided by the axis direction during rotor balancing: vertical and horizontal;
2. Classified by usage scope: universal type, specialized type; Divided by driving mode: belt type, universal joint type, self driving type;
3. Divided by calibration method: manual, semi-automatic, fully automatic.
3、 The most important indicators for measuring the quality of a dynamic balancing machine are mainly the following two:
1. Minimum achievable residual unbalance: The minimum value of residual unbalance that a balancing machine can achieve for a rotor. The minimum achievable residual unbalance is a performance indicator for measuring the maximum balancing capacity of a balancing machine. Expressed in Lm or g · mm/kg. The eper of the dynamic balancing machine should be less than one-third of the minimum allowable residual unbalance (equivalent to the allowable eccentricity) required for the highest balance level of its calibrated rotor. For example, the balance accuracy level of a regular motor rotor is G6.3. If its maximum speed is 3000rpm, according to the table, its allowable eccentricity is (20~50) Lm. Taking its high limit, its allowable eccentricity is 20Lm. Therefore, the minimum allowable residual unbalance degree eper of the balancing machine is less than 6Lm, which is qualified.
2. Unequal reduction rate (URR): The ratio of the unbalanced amount reduced after one balance correction to the initial balanced amount. It is a performance indicator for measuring the balancing efficiency of a balancing machine. Usually expressed as a percentage.
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