Ballscrew follower and method of making and operating the same

Details Ballscrew follower and method of making and operating the same Ballscrew follower and method of making and operating the same

1988-01-19

1990-01-30

Braun, Leslie A.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

744248R, 74441, 74459, F16H 1308

Patent

active

048965529

ABSTRACT:
An improved ball screw and follower and method of making the same includes one or more helical grooves along the leadscrew with mating grooves and pitch within the follower to form a course therebetween for the rotational positioning therein of a plurality of balls in rolling engagement with the leadscrew and follower. Backlash is substantially eliminated by cutting a central section of the follower along the land between adjacent grooves in the follower for at least one turn to form thereby a torsionally-resilient section that torsionally couples the resulting leading and trailing sections of the follower together in a manner that resiliently flexes along the course in which the balls rotate.

REFERENCES:
patent: 2855791 (1958-10-01), Hogan
patent: 3009367 (1961-11-01), Striggow
patent: 3532004 (1970-10-01), Nilsson
patent: 3589202 (1971-06-01), Stanley
patent: 3720116 (1973-03-01), Better et al.
patent: 3990317 (1976-11-01), Gilman et al.
patent: 4074587 (1978-02-01), Brusasco
patent: 4141255 (1979-02-01), Nilsson
patent: 4186620 (1980-02-01), Brusasco
patent: 4224831 (1980-09-01), Nilsson
patent: 4246802 (1981-01-01), Rasmussen
patent: 4253342 (1981-03-01), Uhing
patent: 4411166 (1983-10-01), Marcovici
patent: 4660431 (1987-04-01), Heine
Catalog; Ball Screws & Actuators Co., Inc. (8/87).
Catalog; Comptrol, Inc. (4/84).
Catalog; Thomson Industries, Inc. (11/85).

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