Planetary crank gearing
OwnerPetr I. Gorkovinventor
Life of this patent
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Abstract
From a common eccentric drive shaft rotation is transmitted to a group of parallel driven shafts spaced from each other. Set on each one of the driven shafts is a sun gear meshing with its satellite gear having an inner rim. All of the satellites are rigidly interconnected into a single block moving from the eccentric shaft parallel to itself such that each point of said block describes identical circles with an eccentric radius e and the following condition is met for each planetary pair: e=r.sub.2 -r.sub.2 =const, wherein r.sub.1 is the pitch circle radius of the satellite gear inner rim, and r.sub.2 is the pitch circle radius of the sun gear. The gearing of the invention may help simplify the design of multiple spindle multihead machines and drill heads.
Claims6
Planetary crank gearing for rotation from a single drive shaft to a group of parallel driven shafts spaced from each other comprising, a rotary driven drive shaft, a plurality of parallel driven shafts, for each driven shaft a planetary gear pair, each planetary gear pair comprising a planetary gear driven from said single drive shaft and a sun gear driven by the corresponding planetary gear, a common drive block of planetary gears meshing with each planet gear of each planetary gear pair, the planet gear and sun gear of each planetary gear train being disposed relatively eccentric, and the gear ratios of at least some of the planetary gear pairs being different.
A planetary crank gearing for transmitting rotation from a single drive shaft to a group of driven shafts parallel to said drive shaft and spaced from each other, comprising a rotary driven drive shaft, a plurality of parallel driven shafts, for each driven shaft a planetary gear pair, each planetary gear pair comprising a planetary gear driven from said single drive shaft and a sun gear being rigidly set upon and being driven by the corresponding planetary gear, the planetary gears being interconnected in a single block and meshing with the sun gears, the planetary gear and the sun gear of each planetary gear pair train being disposed relatively eccentric, and the gear ratios of at least one of the planetary gear pairs being different.
Dependencies are inferred from the claim text.