Why magnetic powder clutch,powder brake use of the process will be stuck
Release Date:28/03/2015
Why magnetic powder clutch,powder brake use of the process will be stuck?
Magnetic powder clutch is drive (input shaft) and slave units (output shaft) merger. In the space between the two groups of cells, filled with a granular magnetic powder (off-plot about 40 microns). When the magnetic coil is not conductive, the torque from the drive shaft does not pass on the driven shaft, but if the solenoid coil is energized, it is due to the magnetic force generated attracts Magnetic hardening phenomenon, even following will communicate between the slip torque . The principle is similar to magnetic brakes magnetic clutch, just put the drive into a fixed unit.
Magnetic clutch / brake happen stuck usually have the following situations:
1. Because during transport or long lead time between placing two units to fill some of the magnetic powder scattered side, and in front of the boot without making exciting cause stuck.
2. Due to manufacturing precision low, concentricity of the rotor is not enough, resulting in uneven output torque or stuck.
3. The magnetic powder filled in the production process caused by excessive.
4. The use of poor quality caused by magnetic powder.
For several cases, it is recommended:
1. Before or after the formal operation of mobile devices, and we must work even before the formal operation. So as to produce a smooth torque, uniform operation as follows:
In the absence of excitation state, the driving side as much as possible high speed (1800rpm or less) for about one minute after the rotation, in the rated exciting current is set to 1 / 4-1 / 5, on the one hand the rotary drive side, on the one hand five seconds to open, 10 seconds off between exhaust exciting about 20 times.
2. When choosing to buy magnetic clutch / magnetic brakes, the best choice for quality assurance of products.
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