Ball screw mechanism

Details Ball screw mechanism Ball screw mechanism

1993-01-14

1993-09-21

Herrmann, Allan D.

Machine element or mechanism

Gearing

Directly cooperating gears

74459, F16H 118

Patent

active

052458849

ABSTRACT:
A ball-screw includes a shaft 1 having two separate helical grooves 3,4 of the same pitch and spaced by half that pitch. The nut 2 includes two corresponding grooves and return bores 5 to define two endless recirculating paths for balls disposed between the nut and shaft. This arrangement permits, for a given groove pitch, the minimum length of the nut to be reduced.

REFERENCES:
patent: 3640147 (1972-02-01), Fantoni
patent: 3648535 (1972-03-01), Maroth
patent: 3730016 (1973-05-01), Miller
patent: 3924486 (1975-12-01), Taillardat
patent: 4052906 (1977-10-01), Genini
patent: 4070921 (1978-01-01), Arnold
patent: 4286793 (1981-09-01), Ploss et al.
patent: 4467671 (1984-08-01), Miyata et al.
patent: 4604911 (1986-08-01), Teramachi
patent: 4612817 (1986-09-01), Neff
patent: 4680982 (1987-07-01), Wilke et al.
patent: 4887480 (1989-12-01), Pollo

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