What makes a Linear Stepper Motor different?
While we mentioned earlier that the linear stepper motor is like the rest of the other linear motors, you will find it interesting to know that it differs when it comes to the parts or components. For example, the platen which is rightly mentioned above as the main part of this motor is a passive component and is most of the time a steel plate with slots that are milled into it. The slider or forcer, on the other hand, is made up of laminations with motor windings, slotted teeth, and also a permanent magnet. The teeth of the forcer here concentrate the magnetic flux that is created when there is current in the coils. Additionally, the teeth of the forcer are also made to be staggered in relation to the platen teeth to ensure that constant attraction is maintained and that the next set of teeth comes into alignment.
The flux that exists between the platen and the slider is said to create a magnetic connection, meaning that bearings (that can either be mechanical or air bearing) are integrated into the linear motor system to ensure that the right or accurate air gap is maintained between the slider and platen. The platen tends to serve as the air bearing surface when air bearing is used instead of the mechanical bearing.
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