Summary:...
In the process of installation, operation, maintenance and overhaul, vibration of the miniature
geared motor is often encountered. Once vibration occurs, it will cause damage to the parts of the miniature geared motor, damage to the operation fluctuation, shorten the service life and even cause downtime. So why does it vibrate?
There are two main reasons for the vibration of the miniature reduction motor:
A. Electrical reasons
1. Electromagnetic force. The emergence of electromagnetic force is mainly caused by the longitudinal oscillation of the magnetic flux under the pole piece. The increase of magnetic flux pulsation is very prone to variable magnetic tension;
2. Uneven air gap. The uneven air gap during installation and removal causes unilateral magnetic tension in the miniature geared motor during operation, and vibration is not unexpected;
3. The rotor coil is damaged. If the rotor coil is damaged, when the miniature reduction motor is running, the radial force of the rotor will be unbalanced and vibration will occur.
B. Mechanical reasons
1. The armature is unbalanced. When the motor is rotating, the centrifugal force occurs due to poor balance. Under the action of the centrifugal force, the bearing generates rotational force, which causes the vibration of the miniature reduction motor. When the rigidity of the base and the end cover is not good, the air gap is uneven, and the main pole is fixed loosely, the vibration will be more serious.
2. The radial clearance of the bearing is too large. When assembling, the bearing used should be qualified. If the bearing is not properly matched with the bearing seat and the bearing neck, it will cause vibration during work. In addition, the continuous wear of the bearing during long-term use will also cause It has a lot of vibration and noise during operation.
3. The support is deformed. The machine base, end cover and other accessories are too large in error or even deformed during the production, which makes the bearing interference of the miniature reduction motor when it is running, causing the motor to vibrate.
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