Ball screw and nut drive device

Details Ball screw and nut drive device Ball screw and nut drive device

1980-04-03

1982-11-09

Herrmann, Allan D.

Machine element or mechanism

Gearing

Directly cooperating gears

74459, F16H 2522

Patent

active

043578381

ABSTRACT:
In a ball screw and nut drive device, a helical ball spindle or channel is formed in the inner surface of a nut body and the outer surface of a screw. Balls are circulated through the helical ball channel being returned from one end to the other of the channel by deflecting channels and a return channel. Each deflecting channel is formed in part by a deflecting member fitted into a recess formed in the inner surface of the nut body. The deflecting member includes a projection for lifting balls out of the helical ball channel into the deflecting channel. The deflecting channel has a rectilinear part which can receive balls from the helical ball channel and a curved part connecting the rectilinear part with the return channel. The deflecting channel in the deflecting member is open along its length and the balls passing therethrough contact a wall in the recess formed in the nut body.

REFERENCES:
patent: 2166106 (1939-07-01), Gormley
patent: 2502066 (1950-03-01), Tanner
patent: 3234810 (1966-02-01), Orner
patent: 3580098 (1971-05-01), Goad
patent: 3771382 (1973-11-01), Wilke
patent: 3815435 (1974-06-01), Eschenbacher et al.
patent: 3850046 (1974-11-01), Nilsson
patent: 3971264 (1976-07-01), Detraz et al.
patent: 4070921 (1978-01-01), Arnold
patent: 4148226 (1979-04-01), Benton
patent: 4226137 (1980-10-01), Sharp

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