Magnetic Powder Brake And Clutch Torque Adjustment

 The magnetic powder brakes use a rated voltage of DC24V, and the conventional torque is between 1Nm and 400Nm. It uses the characteristics of the magnetic powder to transmit torque, provided that the current is turned on. After a number of authoritative technical tests and experiments, the relationship between the excitation current and the transmitted torque is basically linear.

Therefore, it is very simple and convenient to adjust the torque of the magnetic powder brake clutch. As long as the magnitude of the exciting current is changed, the torque of the magnetic powder brake clutch can be easily adjusted. In addition, adjusting the torque of the magnetic powder clutch brake usually requires a tension controller (manual or fully automatic), and the controllable DC0~24V or 0~4A is output through the tension controller for driving the magnetic powder clutch brake. Receiving/rewinding constant tension control.

The principle of the magnetic powder clutch is the same, as long as the driven rotor of the magnetic powder clutch is fixed, a magnetic powder brake is formed. Characteristics The excitation current is linear with the torque, and the transmitted torque is basically linear with the excitation current. As long as the magnitude of the excitation current is changed, the magnitude of the torque can be controlled over a wide range. In general, the excitation current is substantially proportional to the transmitted torque in the range of 5%-100% of the rated torque.

Stable slip torque When the excitation current remains constant, the torque it transmits is not affected by the speed difference (slip speed) between the active followers. That is to say, there is no difference between the static friction torque and the dynamic friction torque, so that the torque can be stably achieved. This feature is applied to the tension control, and the user can accurately control the torque by simply exciting the magnetizing current, thereby effectively controlling the tension of the coil. Preventing heat generation due to slipping Generally, the friction part is inevitably heated or even burned when continuously sliding.

Magnetic powder brake application range: Due to the above characteristics of magnetic powder clutch/brake, it has been widely used in winding, unwinding tension in papermaking, printing, plastics, rubber, textile, printing and dyeing, wire and cable, metallurgy and other related coiling processing industries. control. In addition: magnetic powder clutch can also be used for buffer start, overload protection, speed regulation, etc.; magnetic powder brake can also be used for test loading and braking of transmission machinery.
Magnetic powder brake is a kind of new automatic control element with high magnetic permeability magnetic powder as working medium and exciting current as control means. Its working principle is to generate magnetic field after turning on DC power supply, and the working medium magnetic powder is formed under the action of magnetic lines of force. Magnetic powder chain, the purpose of braking torque, magnetic powder brake features fast response, good linearity, constant control torque, stable operation, simple structure, no noise, easy maintenance, fast braking, tension control, position control, speed control, Microcomputer and other functions, it is widely used in paper making, printing, textile, packaging, plastics, general machinery. The magnetic powder clutch is a combination of a transmission unit (input shaft) and a driven unit (output shaft). The space between the two sets of cells is filled with granular magnetic powder (about 40 microns of rest). When the magnetic coil is not conducting, the torque will not be transmitted from the transmission shaft to the driven shaft. However, if the coil is electromagnetically energized, the magnetic powder will attract hardening due to the action of the magnetic force, and the torque will be transmitted between successive slidings. .

(1) Magnetic powder brake High-precision torque control torque has a wide control range, high control precision, and the torque and excitation current are correctly proportional, enabling high-precision control.

(2) The superior durability and long life of the magnetic powder brake The super-alloy magnetic powder with high heat resistance, wear resistance, oxidation resistance and corrosion resistance has a long service life.

(3) The stability of the magnetic powder brake is superior. The magnetic characteristics of the magnetic powder are good, and the bonding force between the powder particles is stable, the sliding torque is very stable, and the relative rotation number has no relationship and can maintain a constant torque for a long time. .

(4) The magnetic powder brake is continuously slid and operated using a cooling structure with excellent heat dissipation effect and uniform heat distortion, and high heat resistance of the magnetic powder, allowing for connection and braking power and sliding power, and smooth sliding operation without causing shock.

(5) The magnetic powder brake is connected smoothly, and the impact when there is no impact connection is extremely small, and it can be smoothly started and stopped without impact. Moreover, the resistance torque is extremely small and does not cause useless heat.发送反馈