double worm globoidal screw
grabcad
On www.galli-mechanical-designer.com, you'll find information about the transmission of rotary motion between perpendicular axes using spiral couplings made up of a toothed wheel and a cylindrical screw. However, these systems can experience wear due to friction, as the screw profile in steel tends to groove the matched profile of the toothed wheel, usually bronze. To solve this issue, a self-recirculating ball screw is used, where steel balls between the screw and nut transform sliding friction into rolling friction, acting like a ball bearing. This improves mechanical efficiency up to 96%, reduces heat dissipation, wear, and maintains low operating temperatures for high positional accuracy.
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