Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1976-11-26
1978-08-15
Gerin, Leonard H.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74410, F16H 128, F16H 5700
Patent
active
041063660
ABSTRACT:
A play-free planetary drive includes a sun gear and an internal gear between which planetary gears revolve as they rotate. The planetary gears are slightly beveled. The sun gear and the internal gear also are beveled, so that the bevel of the sun gear and of the internal gear match that of the planetary gears. With this arrangement of the gears, the sun gear and the internal gear are urged axially against the planetary gears, meshing into them until play has been eliminated. The internal gear is non-rotatably mounted to the housing, but is permitted to shift slightly radially to accommodate radial run-out of the planetary gears. Likewise, the sun gear is permitted to shift slightly radially to accommodate radial run-out of the planetary gears. The radial accommodation thus provided achieves a degree of load equalization among the planetary gears.
REFERENCES:
patent: 1027236 (1912-05-01), Cake
patent: 1244223 (1917-10-01), McInish
patent: 3943780 (1976-03-01), Klaue
patent: 3974718 (1976-08-01), Kylberg
Altenbokum Karlheinz
Goldschmidt Rolf
Hansgen Klaus
Hiersig Heinz M.
Szynka Peter
Gerin Leonard H.
Mannesmann Aktiengesellschaft
Siegemund Ralf H.
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