Epicyclic gearing - Wikipedia
An epicyclic gear train (also known as a planetary gearset) is a gear reduction assembly consisting of two gears mounted so that the center of one gear (the "planet") revolves around the center of the other (the "sun"). A carrier connects the centers of the two gears and rotates, to carry the planet gear(s) around the sun gear.
Epicyclic Gear Train- Diagram, Parts, Working, Advantages , …
The epicyclic gear trains are used in the back gear of lathe, differential gears of the automobiles, hoists, pulley blocks, wrist watches, etc. The epicyclic gear trains are useful for transmitting high-velocity ratios with gears of moderate size in a comparatively lesser space.
Epicyclic Gear Train: Learn its working, parts, and applications
2023年6月14日 · An epicyclic gear train is a type of gear system consisting of one or more planet gears rotating around a central sun gear. It is commonly used in automotive transmissions and industrial machinery due to its compact design and high torque capacity.
Epicyclic Gearing: A Handbook | Gear Solutions Magazine Your …
2008年9月1日 · Epicyclic gearing requires a step-by-step process to make it work, and some of the steps are not necessarily intuitive. As such, this article aims to provide assistance and guidelines for people designing epicyclic gear trains for the first time—and perhaps, if you will, ease their degree of suffering.
Planetary Gear: Explained – Engineering Cheat Sheet
2024年3月15日 · In the 2nd century AD, Ptolemy utilized rotating deferents and epicycles in epicyclic gear trains described in The Mathematical Syntaxis, or Almagest, to predict planetary motions. This method assumed that the Sun, Moon, and the five known planets followed paths traced by a point on the planet gear, forming a curve known as an epitrochoid.
A little deeper look at epicyclic gear trains
2022年12月15日 · Sequential phase epicyclic gear trains cancel the torques and thrusts forces, but reinforce radial forces. • In-Phase Counter-Phase is defined as opposite phase angles for opposing planet pinions, and have summed components of excitation canceled.
Epicyclic Gear Trains - SpringerLink
An epicyclic gear train is a coaxial speed reducer or increaser stage comprised of a sun gear, planet gear (s), and a ring gear (Townsend 1992; Coy et al. 1985). The ratio attained from the gear train depends on the component that has its rotational motion constrained or controlled.
In the first three types of gear trains, the axes of the shafts over which the gears are mounted are fixed relative to each other. But in case of epicyclic gear trains, the axes of the shafts on which the gears are mounted may move relative to a fixed axis. 13.3. Simple Gear Train.
3.2.4 Epicyclic gear Train (Planetary Gears): These are gear trains in which the axis of one or more gears moves relative to the frame, i.e. a gear will be so driven that it not only rotates about its own center but at the same time its center rotates about another center.
Epicyclic Gear Trains - SpringerLink
2021年11月12日 · When at least one of the gear axes rotates relative to a frame in addition to the gear’s own rotation about its own axes, the train is called a planetary gear train or epicyclic gear train. When a generating circle (planet gear) rolls on the outside of another circle, called a directing circle (sun gear), each point on the generating circle ...