What are the advantages of epicyclic gear train?

Advantages of Epicyclic Gearbox : Compact and lightweight with high torque transmission. High radial loads on the output shaft. It is quieter in operation. Uniform distribution of load over all gears having greater tooth contact.

Do you know epicyclic gear box what is the practical application of epicyclic gear box?

Epicyclic gearbox is a gearbox which is used in automatic transmissions and as the name suggests ,uses epicyclic gear trains. It is used in conjunction with torque converter. Gears are used to transmit motion through the engagement of gear teeth, which results in either acceleration or a decrease in speed.

Are planetary gears more efficient?

Because planetary gearboxes do all these things with higher stiffness, less backlash, better efficiency, and lower noise than other gear types. As the sun gear rotates, it drives the planetary gears to spin on their own axes and revolve around the sun gear.

Can planetary gears be back driven?

A 10:1 is very easy to back drive. The largest ratio planetary gearbox I have back driven was a two stage 100:1. On a side note, if you are driving the gearbox with a DC or servo motor you will probably have to disable the dynamic braking to back drive it.

In which configuration is the epicyclic gearbox?

17. In which of the configuration of epicyclic gearbox output will be forward and fast output speed? Explanation: When the Sun gear is stationary, the planet carrier is driving and the ring gear is driven then output is forward and fast speed. When any two of the three are stationary then we get the direct drive.

What will be the degree of freedom of epicyclic gear train?

Generally all simple gear train have 1 Degree of freedom but Epicyclic have 2 DOF since you need to give two inputs for getting an output.

What is reverted epicyclic gear train?

Reverted Gear Train When the axes of the first gear (i.e. first driver) and the last gear (i.e. last driven or follower) are co-axial, then the gear train is known as reverted gear train. 19.

How do epicyclic gears work?

An epicyclic gear train (also known as a planetary gearset) consists of two gears mounted so that the center of one gear revolves around the center of the other. The combination of epicycle gear trains with a planet engaging both a sun gear and a ring gear is called a planetary gear train.

How do you identify different gears?

To broadly classify types of gears by their tooth shape, there are involute tooth shape, cycloid tooth shape and trochoid tooth shape. Among these, involute tooth shape is most commonly used.

What is the advantage of using constant mesh gear box?

Advantages of Constant Mesh Gearbox: To avoid the vibrations and noise helical gears are used. It create less noise. As compare to sliding mesh gear box the mechanical efficiency of constant mesh gear box is high. The teeth of dog clutch is less wear and tear in engagement and disengagement of gears.

What are different methods to analyze the epicyclic gear train?

There are several approaches used to deal with the angular velocity analysis of epicyclic gear trains, such as: the vector loop method [2], the relative velocity method [3], the tabular method [4], the algebraic method [5], and the fundamental circuit method [6, 7], which have been proposed over the last several …

What is the working principle of an epicyclic gearbox?

The working principle of the epicyclic gearbox is based on the fact the fixing any of the gears i.e. sun gear, planetary gears, and annular gear is done to obtain the required torque or speed output. As fixing any of the above causes the variation in gear ratios from high torque to high speed. So let’s see how these ratios are obtained

What is an epicylic gear?

An epicylic gear is a planetary gear arrangement consisting of one or more planet (epicyclic) gears (P) meshed and rotating round a central sun gear (S). The planet gears are also meshed and rotate within an internal ring gear (A). The planet gears are fixed to a planet carrier-crank arm (L) designed to rotate on the same centre as the sun gear.

What are the advantages of a planetary gearbox?

The planetary gearbox offers a set of distinct advantages which makes it an interesting alternative to traditional gear types such as helical and parallel shaft gearboxes in applications requiring: Uniform distribution of load over all gears having greater tooth contact.

Is epicyclic gearing the future for engineers?

Recent articles in Gear Solutions have discussed epicyclic gearing, but often in the context of experienced engineers. As more and more of these engineers reach retirement age younger engineers must pick up where they left off, and for many epicyclic gearing is an area where they lack experience.