Feed and rapid return means for machine tools

Details Feed and rapid return means for machine tools Feed and rapid return means for machine tools

1986-09-15

1988-05-03

Staab, Lawrence

Machine element or mechanism

Gearing

Directly cooperating gears

744248R, 74459, 74405, F16H 120, F16H 5517, F16H 344

Patent

active

047412216

ABSTRACT:
The combination of a lead screw and a multi-ball nut. The balls are disposed around the axis of the lead screw. The balls are mounted on the nut either to be received and retained in the valley of the lead screw thread (whereby rotation of the lead screw causes movement of the nut along the lead screw in one direction for a feed operation) or for the balls to be movable out of the valley onto the crest of the thread. The latter condition permits the nut to be moved along the lead screw in a reverse direction for a quick return operation.

REFERENCES:
patent: 2472002 (1949-05-01), Clark
patent: 2958232 (1960-11-01), Benninghoff et al.
patent: 3029792 (1962-04-01), Rasmussen
patent: 3169407 (1965-02-01), Newell
patent: 3296880 (1967-01-01), Maroth
patent: 3334526 (1967-08-01), Flarsheim
patent: 3546930 (1970-12-01), Flarsheim
patent: 4198872 (1980-04-01), Metz

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