Electromagnet Ratchet Motor

thingiverse

This printable motor prototype features a unique design without magnets and can be utilized in conjunction with a specific electromagnet. It's driven by pulsed DC current, advancing a ratchet wheel as each pulse attracts the arm to the electromagnet. Gravity returns the arm to its resting position. The motor is set on an angled stand for adjustable return force. A video showcasing it with a homemade electromagnet is available. The electromagnet utilizes magnet wire and a half-inch steel bolt as core, drawing a few amps at 6V with a glued steel washer on the moving arm. Inspiration for the ratchet wheel and pawls came from various sources, including other actuator ideas listed on the Reprap Actuator Fabrication Page. Assembly involves laser cutting or printing components, hand-adjusting pawl placement, and fine-tuning arm travel via stop and electromagnet nut adjustments. Different thickness pawls are included for optimal operation.