the lives madrevite with spheres relating between the filettature and with at least one insert passage single for the return of the spheres

摘要

A spherical-thread spindle nut bearing at least one single-transfer insert piece, which comprises a spherical-thread spindle nut and a spindle. A nut housing surrounds the spindle. Two adjacent thread starts have thread flanks. At least one single-transfer insert piece is disposed between the thread flanks. Balls are adapted to travel in threads along bearing lines in the direction of rotation of a nut and the spindle. The bearing lines, receiving the load in the direction of rotation in the thread of the nut, are interrupted in the range of the transfer of the balls into and out of, respectively, said single-transfer insert piece by each of a bevel and perpendicular, respectively, forming a place of discontinuity. The balls, upon leaving and reentering, respectively, into the bearing lines, rest at predetermined first points simultaneously on perpendicular guide path wall parts, at predetermined second points each, and seat themselves in the guide path bottom, extending perpendicularly to the guide path wall part, at each of predetermined third points. The perpendicular guide path wall part of the single-transfer insert piece is bent parallel to the bearing lines, the latter being free of points of discontinuity at the sides opposite the points of discontinuity.