The surface damage of the vibrating feeder needs to find out the cause and know how to deal with it.
1. Since the air gap between the stator and the rotor of the micro gear reduction motor is small, the rotor broom will be caused if the bearing is severely worn, overloaded or subjected to impact and the bearing is slightly deformed or bent. As a result of the broom, the surface of the core is scratched, and the iron core is worn and the winding is burned. During the operation of the geared motor, even if the rotor has only a slight broom, the power should be cut off immediately to stop the geared motor and check. When inspecting, open the end cap of the geared motor, take out the rotor, carefully find out the location of the iron core and the degree of scratching, and find out the cause of the scratch.
Usually, the silicon steel sheet of the core scratched portion is annealed by frictional overheating, and as a result, the magnetic permeability of the silicon steel sheet is lowered. On the other hand, the end faces of the silicon steel sheets tend to grind the burrs, and the burrs fall to both sides, causing a short circuit between the silicon steel sheets, which increases the eddy current of the core, thereby leaving a hidden danger. If it is not treated in time, the eddy current will increase with the aging of the core insulation, resulting in an increase in the temperature rise of the geared motor, resulting in overheating or even burning of the geared motor.
Once the surface of the silicon steel sheet is found to have burrs, it can be scraped off with a triangular scraper and the surface of the core coated with insulating varnish. If the teeth of the silicon steel sheet are loose, the mica sheet can be inserted into the gap between the silicon steel sheets and coated with an insulating varnish. In this way, the insulation between the silicon steel sheets can be strengthened to prevent short circuit between the sheets, and the strength of the core teeth can be increased.
2. The winding insulation breaks through the short circuit or the winding is short-circuited to the ground to generate an arc, which causes the surface of the core to burn, and the vibrating feeder tends to be uneven. This not only affects the normal operation of the vibrating feeder, but also causes a short circuit between the silicon steel sheets, which increases the core eddy current.
If the vibrating feeder has a deposit, it can be scraped off with a spatula; if the vibrating feeder is uneven, it can be cleaned and smoothed. After the above treatment, apply an insulating varnish to the surface of the core.