Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1983-07-01
1986-01-14
Braun, Leslie A.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74 60, 74798, F16H 1308
Patent
active
045639159
ABSTRACT:
A differential speed reducer has a wobble member mounted on an input shaft so as to follow a sinusoidal path of movement. A first gear journaled on the wobble member has a radially disposed cam surface on one face to follow the sinusoidal movement of the wobble member, and a second gear is axially spaced from the first gear with correspondingly formed cam surfaces aligned with those of the first gear, and a plurality of balls are interpositioned between the first and second cam surfaces to transmit torque from the rotary input shaft to the second cam surface. For multiple speed reduction, a second set of cam surfaces corresponding to the first cam surfaces is interposed between the input shaft and first set of cam surfaces, and rolling elements again impart torque from the input side into the first set of cam surfaces. The first and second sets of cam surfaces can be formed on different radii and concentrically positioned with respect to one another so as to form a very compact speed reducer unit.
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Braun Leslie A.
Diehl Dwight G.
Loeffler William R.
Reilly John E.
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