3D printed Rack and Pinion Actuator
thingiverse
I feel that Rack and Pinion is an under-appreciated mechanism in the era of 3D printers This is a simple rack and pinion actuator designed in Fusion 360. It is divided into 4 parts, a base, two idler gears, a driven pinion gear and a top plate. In addition to the printed parts you will need 5x M3x30 screws, 2x M8x25 screws, 2x 608 bearing, a NEMA17 stepper and optionally a M3 grub screw (For me, the pinion was a really tight fit on the stepper's shaft). If printed and assembled correctly you should face next to no backlash.. Video of operation: https://youtu.be/FPAV_rMz3q8
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