Two-axis Magnetic Powder Clutch

The selection of the magnetic powder clutch is generally selected on the basis of the required maximum torque, and at the same time, it is ensured that the actual slip power is less than the allowable slip power of the magnetic powder brake.

The tension control of the tension controller refers to the ability to permanently control the tension of the tape as it is transported on the device. This magnetic powder brake must remain effective for any operating speed of the machine, including acceleration, deceleration and constant speed of the machine. Even in the case of an emergency stop, it has the ability to ensure that the tape does not break. The tension controller is basically divided into three categories: manual tension controller, pulse taper tension controller and fully automatic tension controller.

When the magnetic powder clutch has a certain heat dissipation condition, the slip power is a certain value, so the actual working torque and the rotational speed can compensate each other. When the slip speed is increased, the allowable torque will decrease accordingly, but the maximum speed cannot be higher than Its licensed speed.

Magnetic powder clutch: magnetic powder is placed between the active and the driven parts. When the magnetic powder is not energized, the magnetic powder is in a loose state. When the power is applied, the magnetic powder brake is combined, and the active part and the driven part rotate simultaneously. Advantage: The torque can be adjusted by adjusting the current, allowing for large slips. Disadvantages: large temperature rise when the slip is large, the relative price is high

  Slip magnetic powder clutch: When the clutch is working, there must be a certain speed difference between the main and the slave parts to have torque transmission. The amount of torque depends on the strength of the magnetic field and the difference in rotational speed. The excitation current remains unchanged, and the rotational speed decreases drastically with increasing torque; the torque remains unchanged, the excitation current decreases, and the rotational speed decreases more severely.

 Slip magnetic powder clutch has no mechanical connection between the main and driven components, no wear and tear, no magnetic powder leakage, no impact. Adjusting the excitation powder brake can change the speed and use it as a continuously variable transmission. This is its advantage. The main disadvantage of this clutch is that eddy currents in the rotor generate heat that is proportional to the difference in rotational speed. The efficiency at low speed is very low, the efficiency value is the main and the ratio of the speed of the driven shaft, ie η=n2/n1

  The mechanical transmission system suitable for high-frequency operation can combine or separate the driven part and the active part under the condition of active part operation.

  When the active member and the driven member are in a separated state, the active member rotates, and the driven member is stationary; the active member and the magnetic powder brake follower are engaged with each other, and the active portion is brought to rotate with the driven member.

  Widely used in machine tools, packaging, printing, textile, light industry, and office equipment.

  Magnetic powder clutch is generally used for medium temperature -20-50%, humidity less than 85%, in the medium without explosion hazard, the coil voltage fluctuation does not exceed ± 5% of the rated voltage.

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