Ball nut with tangential no load-guided return path

Details Ball nut with tangential no load-guided return path Ball nut with tangential no load-guided return path

1991-03-29

1992-09-01

Herrmann, Allan D.

Machine element or mechanism

Gearing

Teeth

744248R, F16H 5517

Patent

active

051429292

ABSTRACT:
A ball nut (60) has internal return paths (62) for a pair of parallel helical tracks (64). The return paths (62) are formed by grooves (66) machined into the body of the ball nut (60) from one end of the helical tracks (64) to the other. Return guide covers (68) and return guide inserts (69) are inserted into the ball groove tracks (64) on each end of the tracks. These covers (68) and inserts (69) divert the ball bearings through the grooves (66) and into the opposite end of the circuit formed by the helical tracks (64). The ball bearings (82) are deflected by the return guide insert (69) smoothly in a tangential path from the helical track (64). Thus, no abrupt change in direction for the ball bearings (82) while they are under load is encountered.

REFERENCES:
patent: 2855792 (1958-10-01), Gates
patent: 3301082 (1967-01-01), Kosinski
patent: 3815435 (1974-06-01), Eschenbacher et al.
patent: 3924486 (1975-12-01), Taillardat
patent: 3961541 (1976-06-01), Fund et al.
patent: 3971264 (1976-07-01), Detraz et al.
patent: 4074585 (1978-02-01), Richaud et al.
patent: 4905534 (1990-03-01), Andonegui
patent: 5005436 (1991-04-01), Brusasco

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