Device for converting rotary motion into axial motion

Details Device for converting rotary motion into axial motion Device for converting rotary motion into axial motion

1998-11-25

2000-10-17

Fenstermacher, David

Machine element or mechanism

Gearing

Teeth

74 8915, 744248R, F16H 5517

Patent

active

06131479&

ABSTRACT:
A device for converting rotary motion into axial motion, having planetary rollers which are driven from a stationary drive housing by a drive shaft. These planetary rollers are held circumferentially at the same distance apart by a rotatable cage. The planetary rollers engage a thrust element via drive grooves on both the planetary rollers and the thrust element. The drive grooves on the planetary rollers do not engage the drive grooves on the drive shaft which frees the planetary rollers from harmful double engagement. The drive shaft drives these rollers via a gear tooth region on the rollers so as to function reliably and durably with a compact construction. The thrust element which is hollow, is therefore, able to move with a free thrust, i.e. without an additional guide element guiding it along a thrust path. Finally the thrust element has a high bucking strength so that it can withstand relatively large axial pressure.

REFERENCES:
patent: 4375770 (1983-03-01), Druet
patent: 4576057 (1986-03-01), Saari
patent: 4926708 (1990-05-01), Dietrich et al.
patent: 5121019 (1992-06-01), Pradler

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