Single Central Magnet(SCM) Motor

myminifactory

This electric motor is suitable as a direct drive extruder and for moving the axis Z. Due to its light weight of 84 grams and high torque, this motor can be used in the printer as a replacement for heavy stepper motors.The motor consists of several 3D printed parts and a magnet, bearings, shaft and two coils. The operation of the device is based on the interaction of the conductor with the current and the permanent magnet inside the coil.The rotor contains a central magnet and shaft. The stator consists of two coils at an angle of 90 degrees to each other.When a voltage is applied to the coil, the magnet rotates 90 degrees.Motor power depends only on the current in the coils and the magnet parameters. The longer the magnet, the higher the traction characteristics. This device uses a neodymium magnet N38, height 30mm and diameter 10mm.The magnet is chosen for a 4mm shaft, but another shaft diameter is possible.The motor requires a feedback system along with the driver. https://youtu.be/aCEUKgyNtCs