Low backlash gear reduction assembly
AssigneeTRW Inc.
InventorsJack B. Scribner, Edward W. Moorman, James S. Payne
Life of this patent
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Abstract
A precision gear reduction assembly for a gear train assembly for a gear train incorporates a backlash control in which the intermediate gear shaft has one end only mounted within an eccentric bushing. The bushing provides for the adjustment of the intermeshing of the final two gears of the gear train by tilting the intermediate shaft slightly as the bushing is rotated to achieve the desired degree of backlash control.
Claims4
In a reduction gear assembly in which a pinion gear drives a gear-pinion cluster mounted on a shaft which in turn drives a bull gear, the improvement in backlash control comprising means mounting one end of said shaft for eccentric adjustment at the pinion end thereof only in a motion toward and away from intermesh with said bull gear.
In a precision speed reduction gear train comprising an input spur gear, a pair of spaced parallel plates, a transverse first shaft rotatably mounted between said plates, a gear-pinion cluster mounted on said shaft with the gear in running engagement with said input spur gear, a second shaft rotatably mounted on said plates, a bull gear on said second shaft in running engagement with the pinion portion of said gear-pinion cluster, and means mounting one end of said first shaft in one of said plates for eccentric movement about the axis of said shaft providing a variation in the intermesh between said pinion and said bull gear for elimination of backlash.
Dependencies are inferred from the claim text.