Ball screw mechanism

Details Ball screw mechanism Ball screw mechanism

1989-07-10

1990-08-07

Herrmann, Allan D.

Machine element or mechanism

Gearing

Directly cooperating gears

74459, F16H 2522, F16H 2524

Patent

active

049457810

ABSTRACT:
The invention relates to a ball screw mechanism (10) having a nut (20) screwing along a worm spindle (12) with at least one set of balls (18) lodged therebetween. The nut is preferably an elongate cuboid block and has gripping jaws (26, 28) for retaining a recirculator (30) that includes an inner face (32) having S-shaped curved transition grooves (34) for returning balls that circulate within the nut, by one flight each of the worm tap. Unilaterally along the axial worm-tap hole (22) in the nut (20), there is a radial recess (24) matching the shape of the recirculator (30) which is a shoe fitting into a slot adjacent the worm-tap hole (22). A straining bolt (36) may be provided on the nut (20) for adjusting the clear width (w) of its jaws (26, 28) which may be prestressed. Fixing means may be provided on the nut (20) for mounting subassemblies, engaging means, etc.

REFERENCES:
patent: 2833156 (1958-05-01), Spontelli
patent: 3327551 (1967-06-01), Prueter
patent: 3580098 (1971-05-01), Goad
patent: 3731553 (1973-05-01), Nilsson
patent: 3842690 (1974-10-01), Gulick
patent: 4023431 (1977-05-01), Pavlas
patent: 4176561 (1979-12-01), Davidson

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