| gen. |
lead screw (A leadscrew (or lead screw), also known as a power screw[1] or translation screw,[2] is a screw designed to translate turning motion into linear motion. Common applications are machine slides (such as in machine tools), vises, presses, and jacks. wiki Alexander Demidov); ball screw (A ball screw is a mechanical linear actuator that translates rotational motion to linear motion with little friction. ... In contrast to conventional leadscrews, ballscrews tend to be rather bulky, due to the need to have a mechanism to re-circulate the balls. ... Ball screws are used in aircraft and missiles to move control surfaces, especially for electric fly by wire and in automobile power steering to translate rotary motion from an electric motor to axial motion of the steering rack. wiki Alexander Demidov) |
