Feed screw apparatus

Details Feed screw apparatus Feed screw apparatus

1988-10-14

1990-06-12

Herrmann, Allan D.

Machine element or mechanism

Gearing

Directly cooperating gears

74 8915, 384 45, F16C 2906

Patent

active

049322796

ABSTRACT:
In a feed screw apparatus composed of a feed screw shaft and a nut engaged with the feed screw shaft which is movable in the axial direction, a guide rail member having ball rolling grooves in both side surfaces is disposed beneath the feed screw shaft in parallel to and slightly spaced therefrom. The bottom portion of the nut is extended downwardly at both lateral sides to form side walls constituting a linear guide section which sandwiches the guide rail member and has ball rolling grooves in the inner surfaces of the side walls. The outer surfaces of the side walls of the linear guide section are formed with ball rolling grooves, and half tubes respectively facing these ball rolling grooves to form ball return paths are fixed between end caps which are secured at opposite ends of the linear guide section.

REFERENCES:
patent: 3670583 (1972-06-01), Leming
patent: 4426119 (1984-01-01), Mottate
patent: 4478462 (1984-10-01), Teramachi
patent: 4576421 (1986-03-01), Teramachi
patent: 4798479 (1989-01-01), Morita

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