Nutating drive mechanisms having spherical ball driving elements
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United States of America Patent
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-
Nov 4, 1986
Grant Date -
N/A
app pub date -
Oct 18, 1982
filing date -
Oct 18, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A nutating gear reduction mechanism employs two series of rolling elements in the form of balls as the means of torque transmission. In this manner, gear teeth are eliminated and replaced with conjugate pairs of trochoidally cut grooves, with the rolling elements operating between the grooves formed in a wobble member, on the one hand, and a stator and an output member, on the other hand. Either single or multiple stage speed reduction may be achieved, the single stage version being obtained by replacing one set of conjugate trochoidal races with oval races coupling the wobble member and either the stator or the output member in a constant velocity fashion.
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