Ball screw device with resonance preventing means for a screw sh

Details Ball screw device with resonance preventing means for a screw sh Ball screw device with resonance preventing means for a screw sh

1995-01-17

1997-03-25

Luong, Vinh T.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

744248R, 248676, 188378, 521673, F16H 2524

Patent

active

056134002

ABSTRACT:
A ball screw device includes a screw shaft including a hollow hole, a vibration controlling mass member inserted into the hollow hole, a rubber member or a synthetic resin member which is interposed between the outer surface of the vibration controlling mass member and the inner surface of the hollow hole of the screw shaft to prevent contact between the vibration controlling mass member and hollow hole. Further, the ball screw device includes vibration controlling mass member hold rings respectively interposed between the outer surface of the vibration controlling mass member and the inner surface of the hollow hole of the screw shaft and providing two or more support points spaced from each other in the axial direction of the mass member, with slight clearances being provided at least between the outside diameter surfaces of the hold rings and the inside diameter surface of the hollow hole. A table drive device, which includes the ball screw device, is supported on a base member in parallel to the screw shaft and can be moved when a ball nut is rotationally driven by a drive motor disposed on the table.

REFERENCES:
patent: 4671127 (1987-06-01), Yamaguchi
patent: 5169104 (1992-12-01), Kwoh
patent: 5232073 (1993-08-01), Bronowicki et al.
patent: 5311790 (1994-05-01), Yanagisawa
patent: 5319990 (1994-06-01), Veale et al.
Patent Abstracts of Japan, M-1593, Apr. 15, 1994, vol. 18, No. 212, 6-11009(A).

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