What are the indicators for measuring the quality of a balancing machine? A balancing machine is a device used to measure the imbalance of a rotor and correct the rotor based on 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 it 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 imbalance.
2、 At present, there are several common types of dynamic balancing machines:
1. According to the axis direction during rotor balance: vertical and horizontal;
2. Classified by scope of use: universal type, specialized type; According to the driving method, it can be divided into: ring belt type, universal joint shaft type, and self driving type;
3. According to the calibration method, it is divided into manual, semi-automatic, and fully automatic.
3、 The most important indicators for measuring the quality of a dynamic balancing machine are the following two:
1. Minimum achievable residual imbalance: The minimum amount of residual imbalance that the balancing function can achieve for the rotor. The minimum achievable residual imbalance is a performance indicator that measures the highest 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 imbalance (equivalent to the allowable eccentricity) of the highest balance level required for correcting the rotor. For example, the balance accuracy level of a regular motor rotor is G6.3. If its maximum speed is 3000rpm, and by looking up the table, its allowable eccentricity is (20~50) Lm, take its upper limit, and its allowable eccentricity is 20Lm. If the minimum allowable residual imbalance eper of the balance machine is less than 6Lm, it is qualified.
2. Unbalance reduction rate (URR): The ratio of the reduced imbalance after one balance correction to the initial balance. It is a performance indicator that measures 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 it 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 imbalance.
2、 At present, there are several common types of dynamic balancing machines:
1. According to the axis direction during rotor balance: vertical and horizontal;
2. Classified by scope of use: universal type, specialized type; According to the driving method, it can be divided into: ring belt type, universal joint shaft type, and self driving type;
3. According to the calibration method, it is divided into manual, semi-automatic, and fully automatic.
3、 The most important indicators for measuring the quality of a dynamic balancing machine are the following two:
1. Minimum achievable residual imbalance: The minimum amount of residual imbalance that the balancing function can achieve for the rotor. The minimum achievable residual imbalance is a performance indicator that measures the highest 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 imbalance (equivalent to the allowable eccentricity) of the highest balance level required for correcting the rotor. For example, the balance accuracy level of a regular motor rotor is G6.3. If its maximum speed is 3000rpm, and by looking up the table, its allowable eccentricity is (20~50) Lm, take its upper limit, and its allowable eccentricity is 20Lm. If the minimum allowable residual imbalance eper of the balance machine is less than 6Lm, it is qualified.
2. Unbalance reduction rate (URR): The ratio of the reduced imbalance after one balance correction to the initial balance. It is a performance indicator that measures the balancing efficiency of a balancing machine. Usually expressed as a percentage.
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