nema 17 is widely used in 3D printers. Though stepper motors are the main components of all projects, gearboxes are often required, especially in applications such as CNC machines and linear drives for 3D printers. Among these mechanisms, a high torque, low backlash gearbox may be the most suitable option, and a 3D printed, separable planetary harmonic driver for nema 17 may be better.
We suspect that any plastic gearbox will not bounce back as Sirek SBurom claims. But we can see the benefits of design. It has some good functions. Its perfect combination with nema 17 is also a very good feature, and the design on Thingivers should not be too difficult, so it cannot be stretched up and down. Nema 17 drives a solar gear with two planetary gears, each with a 56-tooth stationary ring and a 58-tooth output ring. Each rotation of a planet around a fixed ring causes the output ring to rotate one tooth, resulting in a reduction of nearly 100:1.
We think the term “harmonic” on this gearbox is a bit of a misnomer, because the definition of harmonic driver seems to be characterized by periodic deformation of the bent spline, no matter how you call it, this nema 17 is pretty cool and can be a convenient tool for all kinds of construction.