Motor brake application case analysis
About the electric brake
The electromagnetic brake is a common attachment for the motor. It has two types: energized brake and power-off brake. The power-on braking method is fast and accurate, and is used for automatic intelligent control equipment that needs precise positioning. The application has certain limitations; electromagnetic power-off brakes (hereinafter referred to as brakes) are widely used, machine tools, metallurgy, motors, chemicals, construction, Mechanical transmission systems with positioning and braking requirements such as packaging, printing, textile, and automated production lines are widely used. In addition to the advantages of easy handling and fast braking speed, power-off braking means that the equipment can be safely braked when the equipment is out of control. Ensure the safety of people and facilities.
Structural advantages and characteristics
●The compact size of the electric brake is small, but the braking torque is large enough.
● In response to the rapid loss of power, the brake is used to form the braking torque, and the reset time of the projectile is the braking response time.
● Long-life power-off brake uses a new type of friction material to determine the performance of high life.
Braking works
The electromagnetic power-off brake is mainly composed of a magnetic yoke equipped with a coil, an armature, a coupling plate, a spring, a friction disk, a gear sleeve and the like. The spring is installed in the magnetic yoke, and the armature can move in the axial direction. The magnetic cymbal is fixed to the frame by mounting screws to adjust the gap. After the specified value is not moved, the gear sleeve is connected to the transmission shaft through the key, and the outer teeth of the gear sleeve mesh with the internal teeth of the friction disc.
When the coil is de-energized, under the action of the spring force, the friction disc generates friction with the armature and the base (or the coupling plate), and the drive shaft is braked by the gear sleeve. When the coil is energized, under the action of the electromagnetic force, The armature is sucked into the magnetic yoke, releasing the friction disc and releasing the brake.
