Return tube arrangement for ball screw assembly

Details Return tube arrangement for ball screw assembly Return tube arrangement for ball screw assembly

1990-10-15

1991-11-12

Braun, Leslie A.

Machine element or mechanism

Gearing

Teeth

F16H 5517

Patent

active

050638092

ABSTRACT:
An improved ball screw assembly is disclosed in which a return tube has a pair of minor legs which enter into two ends of the internal helical groove within a nut to return ball bearings between the two ends. Apertures are formed within the nut such that the return tube can be mounted as a one-piece item by moving it perpendicular to the central axis of the screw into the two apertures. The apertures are formed by removing all material which would normally be radially outward of the minor legs, and would prevent mounting of the return tube by moving it perpendicular to the axis of the screw. Due to this improved arrangement between the return tube and the nut, a one-piece return tube can be utilized which contacts the end of the helical groove at an angle parallel to the helix angle and tangent to the helical groove at the ends.

REFERENCES:
patent: 476304 (1892-06-01), Pratt
patent: 2855791 (1958-10-01), Hogan
patent: 3532004 (1970-10-01), Nilsson
patent: 4357838 (1982-11-01), Blaurock et al.
patent: 4677869 (1987-07-01), Mayfield
patent: 4953419 (1990-09-01), Schlenker

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