Self-locking keeps tools like screw jacks from unwinding under load. Acme Screw Thread Profile by Wizard191 CC-BY-SA 3.0 Screw thread profiles can be modified from the standard V profile for ...

More sophisticated printers use ACME threaded rod or trapezoidal threaded ... However, when lead screws aren’t good enough, mechanical designers turn to ball screws. In principle, these are ...