During the operation of a balancing machine, measuring the rotational speed is a very important step, and measuring the rotational speed is a prerequisite. Because the centrifugal force F=mr ω ², there are many factors that affect the instability of the rotational speed. The dynamic balancing machine technician analyzes the following for everyone:
1. Is the speed signal line connected correctly? If not, connect it correctly and try again;
2. Open the industrial control chassis, unplug the 20 pin white power plug on the power supply motherboard, and then try again;
3. Check if the three core power supply between the power board and the filter board is functioning properly;
Balancing Machine
Below are explanations based on different models of dynamic balancing machines:
1. Universal joint dynamic balancing machine: The measurement of its rotational speed is carried out by a magneto electric sensor near the spindle in the headstock box. After the magneto electric sensor is powered on, it generates a magnetic field. When it approaches steel, it is induced to produce an electrical signal. When the spindle rotates and the screw fixed on the spindle approaches the sensor, the sensor is induced to produce an electrical signal, which is input to the industrial computer. If the magneto electric sensor is damaged or the position relative to the screw on the spindle is not appropriate, it may cause unstable speed. In this case, the sensor can be replaced or its position adjusted.
2. Ring driven balancing machine: The speed is detected by a photoelectric sensor. There is a transmitting and receiving indicator light in front of the photoelectric sensor, and a label is attached to the workpiece shaft end. When the rotor rotates, the photoelectric sensor and the label induce an electrical pulse, which is transmitted to the industrial computer. (Note that the photoelectric sensor signal can only switch once for each rotation of the rotor.) If there are oil stains or rust on the shaft end of the workpiece, it will cause multiple electrical pulses to be generated when the rotor rotates, resulting in inaccurate speed measurement. At this point, the workpiece shaft end can be cleaned or the brightness of the photoelectric sensor can be adjusted to eliminate the fault. Signal interference can also cause speed fluctuations. Check if the ground wire is securely connected. If the problem cannot be solved, it is possible that the sensor is damaged.
3. Vertical balancing machine: The speed of the old product is detected by a photoelectric sensor. There is an induction iron plate installed at the rear end of the balancing machine spindle, which rotates synchronously with the spindle. There is a transmitting and receiving indicator light in front of the photoelectric sensor. When the rotor rotates, the photoelectric sensor generates an electrical pulse when it approaches the iron plate, which is transmitted to the industrial computer. (Note that the photoelectric sensor signal can only switch once for each rotation of the rotor.) If the iron plate has oil stains or rust, it will cause multiple electrical pulses to be generated when the rotor rotates, resulting in inaccurate speed measurement. At this point, the iron sheet can be cleaned or the brightness of the photoelectric sensor can be adjusted to eliminate the fault. The current sensors have been changed from photoelectric to magneto electric. When the magneto electric sensor is powered on, it generates a magnetic field. When it approaches steel, it is induced to produce an electrical signal. When the spindle rotates and the iron sheet fixed on the spindle approaches the sensor, the sensor is induced to produce an electrical signal, which is input to the industrial computer. If the magneto electric sensor is damaged or the relative position with the iron plate on the spindle is not appropriate, it will cause unstable speed. In this case, the sensor can be replaced or its position can be adjusted.
4. In addition, equipment with a frequency converter can cause unstable speed due to interference from the frequency converter. It can be confirmed that the grounding wires of the frequency converter, microcomputer, motor, etc. are well connected to eliminate interference. The speed interference generated by the frequency converter is manifested as a change in speed at regular intervals without jumping, which is different from the impact of photoelectric or magneto electric sensors on speed.
5. The sensor flashes once and the LED on the filter board of the industrial control computer connected to it should also flash once. If it does not flash, there may be a problem with the industrial control computer. Generally, it is recommended to replace it as a whole and then return it to the company for testing.
6. If there are no issues with the industrial computer or sensor, it may be a problem with the connection cable between the sensor and the industrial computer.
1. Is the speed signal line connected correctly? If not, connect it correctly and try again;
2. Open the industrial control chassis, unplug the 20 pin white power plug on the power supply motherboard, and then try again;
3. Check if the three core power supply between the power board and the filter board is functioning properly;
Balancing Machine
Below are explanations based on different models of dynamic balancing machines:
1. Universal joint dynamic balancing machine: The measurement of its rotational speed is carried out by a magneto electric sensor near the spindle in the headstock box. After the magneto electric sensor is powered on, it generates a magnetic field. When it approaches steel, it is induced to produce an electrical signal. When the spindle rotates and the screw fixed on the spindle approaches the sensor, the sensor is induced to produce an electrical signal, which is input to the industrial computer. If the magneto electric sensor is damaged or the position relative to the screw on the spindle is not appropriate, it may cause unstable speed. In this case, the sensor can be replaced or its position adjusted.
2. Ring driven balancing machine: The speed is detected by a photoelectric sensor. There is a transmitting and receiving indicator light in front of the photoelectric sensor, and a label is attached to the workpiece shaft end. When the rotor rotates, the photoelectric sensor and the label induce an electrical pulse, which is transmitted to the industrial computer. (Note that the photoelectric sensor signal can only switch once for each rotation of the rotor.) If there are oil stains or rust on the shaft end of the workpiece, it will cause multiple electrical pulses to be generated when the rotor rotates, resulting in inaccurate speed measurement. At this point, the workpiece shaft end can be cleaned or the brightness of the photoelectric sensor can be adjusted to eliminate the fault. Signal interference can also cause speed fluctuations. Check if the ground wire is securely connected. If the problem cannot be solved, it is possible that the sensor is damaged.
3. Vertical balancing machine: The speed of the old product is detected by a photoelectric sensor. There is an induction iron plate installed at the rear end of the balancing machine spindle, which rotates synchronously with the spindle. There is a transmitting and receiving indicator light in front of the photoelectric sensor. When the rotor rotates, the photoelectric sensor generates an electrical pulse when it approaches the iron plate, which is transmitted to the industrial computer. (Note that the photoelectric sensor signal can only switch once for each rotation of the rotor.) If the iron plate has oil stains or rust, it will cause multiple electrical pulses to be generated when the rotor rotates, resulting in inaccurate speed measurement. At this point, the iron sheet can be cleaned or the brightness of the photoelectric sensor can be adjusted to eliminate the fault. The current sensors have been changed from photoelectric to magneto electric. When the magneto electric sensor is powered on, it generates a magnetic field. When it approaches steel, it is induced to produce an electrical signal. When the spindle rotates and the iron sheet fixed on the spindle approaches the sensor, the sensor is induced to produce an electrical signal, which is input to the industrial computer. If the magneto electric sensor is damaged or the relative position with the iron plate on the spindle is not appropriate, it will cause unstable speed. In this case, the sensor can be replaced or its position can be adjusted.
4. In addition, equipment with a frequency converter can cause unstable speed due to interference from the frequency converter. It can be confirmed that the grounding wires of the frequency converter, microcomputer, motor, etc. are well connected to eliminate interference. The speed interference generated by the frequency converter is manifested as a change in speed at regular intervals without jumping, which is different from the impact of photoelectric or magneto electric sensors on speed.
5. The sensor flashes once and the LED on the filter board of the industrial control computer connected to it should also flash once. If it does not flash, there may be a problem with the industrial control computer. Generally, it is recommended to replace it as a whole and then return it to the company for testing.
6. If there are no issues with the industrial computer or sensor, it may be a problem with the connection cable between the sensor and the industrial computer.
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