Rolling body thread device has spindle with two different helical grooves and threaded nuts which when turned in matching rotation displaces or rotates spindle along its spindle axis

摘要

The device comprises a spindle (12) with spindle axis and first helical groove (14) and a second different groove (16). The second groove is also helical and the second rolling body nut (20) has a threaded nut. The spindle is displaceable along its spindle axis and/or rotatable about its spindle axis by rotating the two threaded nuts (18,20) in a matching rotation. The two grooves can have opposite screw directions and the same or different pitches.