Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1988-04-12
1989-07-04
Diehl, Dwight G.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74750R, F16H 128
Patent
active
048439118
ABSTRACT:
A planetary gear apparatus includes: an external gear mounted on an input shaft with an eccentric member and a bearing fitted onto the eccentric member therebetween; an internal gear engaging with the external gear, the internal gear being coaxial with respect to the input shaft; an output shaft for outputting a reduced rotational force; and a drive for coupling the external gear and the output shaft. The planetary gear apparatus is adapted to transmit the rotational force of the input shaft to the output shaft after it has reduced the speed thereof, or to transmit the rotational force of the output shaft to the input shaft after it has increased the speed thereof, by fixing the internal gear. The external gear has a ring-like shape. The inner peripheral surface of the external gear is provided with a hole into which the bearing that is fitted on the eccentric member is fitted, and splines are formed on the insertion hole over the entire external gear in such a manner that they are coaxial with respect to the external gear. The bearing having a width shorter than that of the splines is fitted into one end side of the bearing insertion hole, and the drive having an end provided with splines is engaged with the other end side of the bearing insertion hole. The other end of the drive is provided with splines or spline grooves which are engaged with spline grooves or splines provided in the output shaft.
REFERENCES:
patent: 3405982 (1968-10-01), Krenn
Ishida Toshihiro
Minegishi Kiyoji
Diehl Dwight G.
Sumitomo Heavy Industrie's, Ltd.
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