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Selection requirements and application fields of coreless motor magnetic tiles
Jul 20, 2018

In the process of operation, the coreless motor magnetic tile is effective according to its application field, and its performance and magnetic field waveform requirements are also different to some extent. As its rotor field, its outer arc surface field requires high, The basic requirements of the waveform are sinusoidal waves. As the stator, it is selected according to the different requirements of the output of the motor, the spark and the noise. As the magnetic tile of the stator, the internal arc field is high, which is determined by the shape and production characteristics of the magnetic tile itself. The waveform is mainly saddle-shaped, and the waveform has a large output, but the spark noise and the no-load current are large.

The coreless motor magnetic tile will improve the vibration noise and the commutation spark to a certain extent, so that the no-load current can be effectively reduced to a certain extent, and the shape and size of the entire magnetic steel, the mold design, etc. must be carefully designed, among which The unequal thickness magnetic tile has been widely used, and the principle is to make the waveform of the arc air gap magnetic field in the magnetic tile tend to flat top wave. The magnetic tiles vary greatly depending on the material and type.

The coreless motor magnetic tile is dry-pressed, dry-pressed, and wet-pressured when it is used. The difference between the profile and the sameness is whether there is an orientation magnetic field when the press is formed. In ordinary DC motors, 2 poles and 4 poles are mostly used, and magnetic tiles are basically used as motor stators. Most of the miniature DC motors use ferrite magnets, which are mainly used in toys, home appliances, and automobiles.

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