External screw threads are synonymous with worms but operate with internal screw threads to change rotational movement into lateral (axial) movement. It is a more positive motion than a rack and pinion drive, but it has its limitations.
External screw threads are synonymous with worms but operate with internal screw threads to change rotational movement into lateral (axial) movement. It is a more positive motion than a rack and pinion drive, but it has its limitations.