sun gear


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Related to sun gear: planetary gear

sun gear

[′sən ‚gir]
(mechanical engineering)
References in periodicals archive ?
Due to the relatively small diameter of the sun gear, it is assumed that it is manufactured from a solid disc.
Because the sun gear is in constant contact with the planets, it's important that it is perfectly centered among the three planets in order to provide equal load sharing among itself and all three planets.
The proposed concept has an input central element 1 that has k>3 equiangular and equidistant pins; the satellite gear 2, belonging to the chain transmission that has equiangular and equidistant holes, connected to the correspondent pins of element 1, and the fixed sun gear 3, belonging to the chain transmission (Fig.
Principle of Operation: As the input sun gear turns, the three planet gears rotate and the load is shared equally across the three planet gears.
Fixed sun gear D2 rotated back one turn in counter-clockwise direction, with arm held in fixed position.
Thus, the planetary transmission consists of: a fixed sun gear (3,3'), a satellite gear (2), a semi-coupling with pins (1) and a carrier (H); it has two exterior links (L=2): 1-input, H output.
The Q7's VTC750 transfer case contains a Torsen self-locking center differential that sends power aft down the driveshaft and forward-via chain from the differential's sun gear to the front driveshaft, and on to the front wheels.
In fact, not only did it help Borg-Warner retain the desired cellular concepts for its sun gear operation but, because it didn't require a pit or a platform, the installation process was made far easier and less intrusive.
This last-named function means that MG1, which is connected to the sun gear in the power split planetary gear set, controls the output speed of the transaxle by regulating the amount of electrical power it generates, as that varies its rpm.
For a forged front-wheel drive sun gear, manufacturing engineers decided that to meet production consistency, accuracy, and cost goals, they needed to take a hard look at the entire part-manufacturing process.