What is compound train of gear?

Compound Gears. A compound gear is a number of gears fixed together. Consequently, they rotate at the same speed. An example can be seen below.

Is a train a compound gear train?

A compound gear train is one which has two or more gears attached to the same shaft. In actual fact it is a combination of two or more gear trains. See the animation below. Notice in the compound gear train on the left that four gears are used and that gears “B” and “C” are fixed together on the same shaft.

What are the types of gear train?

Following are the different types of gear trains:

• Simple gear train.
• Compound gear trains.
• Reverted gear trains.
• Epicyclic gear trains.

What is Train value in gear train?

Train Value: It is the ratio of the speed of driven gears to the speed of the driver gears is known as the train value.

Why are compound gear trains better?

The advantage of a compound train over a simple gear train, is that a much larger speed reduction from the first shaft to the last shaft can be obtained with smaller gears. If a simple gear train is used to give a large speed reduction, the final gear may have a significant diameter compared to the input gear.

How many gears are there in a compound train?

In a compound train of gears, as shown in Fig. 13.2, the gear 1 is the driving gear mounted on shaft A, gears 2 and 3 are compound gears which are mounted on shaft B. The gears 4 and 5 are also compound gears which are mounted on shaft C and the gear 6 is the driven gear mounted on shaft D.

What is a compound Gear D-E?

A compound gear D-E gears with C and an internal gear G. D has 20 teeth and gears with C and E has 35 teeth and gears with an internal gear G. The gear G is fixed and is concentric with the shaft axis.

How do you answer a compound gear question?

Below is a question regarding ‘compound gears’. Gears C and B represent a compound gear as they appear ‘fixed’ together. When drawn with a compass they have the same centre. Two gears ‘fixed’ together in this way rotate together and at the same RPM. When answering a question like this split it into two parts.

What is the difference between compound gears C and E?

A gear C (50 teeth) is rigidly mounted on shaft A. A compound gear D-E gears with C and an internal gear G. D has 20 teeth and gears with C and E has 35 teeth and gears with an internal gear G. The gear G is fixed and is concentric with the shaft axis.