Table of Contents
- 1 What is a compound gear train used for?
- 2 What is the difference between a gear train and a compound gear train?
- 3 Why is a compound gear train better than two gears alone?
- 4 How is a clock a compound gear train?
- 5 What are examples of a compound gear train?
- 6 Which gear train is used in wrist watch?
- 7 What machines use compound gear trains?
- 8 What is module in gear?
- 9 What is an example of a compound gear train?
- 10 How to calculate the gear train?
What is a compound gear train used for?
The compound gear train allows you to multiply gear ratios together. Consequently, it is possible to create very large gear ratios and hence generate very large torque and low speeds from high-speed, low-torque motors, for example. The overall gear ratio is found by multiplying all the individual gear ratios together.
What is the difference between a gear train and a compound gear train?
In a simple gear train, a few of the gears are connected to the similar shaft. In a compound gear train, every gear has its own shaft for rotation. In simple gear trains, the final gear ratio is resolute through the driver and driven gears. Compound gear trains enhance power transfer more than simple gear trains.
Are compound gear trains used in cars?
Compound or Multi-stage Gear Train If two gear wheels are joined together by a single shaft, a double-stage compound gear train is formed (Fig. 25.9). This layout is usually found in gearboxes used in vehicles with front mounted engines that have a rear wheel drive.
Why is a compound gear train better than two gears alone?
A compound gear train connects gears that may share axles or shafts. Two gears on the same shaft share the same torque and speed although they are different sizes. This allows more efficient manipulation of speed and torque throughout the system.
How is a clock a compound gear train?
Clocks are compound machines because of the many gears that they possess, which depending on how you view it, can be one type of simple machine or another. There are many types of gears, and each clock slightly differs in what gears are used to move it.
What differentiate more appropriate epicyclic gear train from compound gear train?
Explanation: In an epicyclic gear train, the axes of the shafts, over which the gears are mounted, may move relative to a fixed axis. When there are more than one gear on a shaft, as shown in Fig. 13.2, it is called a compound train of gear.
What are examples of a compound gear train?
Gear trains like this are often found inside machines such as centre lathes and milling machines. On a smaller scale, plastic gear trains are found inside DVD recorders. They ensure that the DVD disk spins at exactly the right speed (RPM Revolutions Per Minute).
Which gear train is used in wrist watch?
The epicyclic gear trains are used in the back gear of lathe, differential gears of the automobiles, hoists, pulley blocks, wrist watches etc.
What is 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 trainas shown in Fig. We see that gear 1 (i.e. first driver) drives the gear 2 (i.e. first driven or follower) in the opposite direction.
What machines use compound gear trains?
Gear trains like this are often found inside machines such as centre lathes and milling machines. On a smaller scale, plastic gear trains are found inside DVD recorders.
What is module in gear?
“Module” is the unit of size that indicates how big or small a gear is. It is the ratio of the reference diameter of the gear divided by the number of teeth. Thus: (Module = Reference diameter.
What is the difference between simple and compound gear train?
In a simple gear train, some of the gears are connected to the same shaft. In a compound gear train, each gear has its own shaft for rotation. Compound gear trains increase power transfer more than simple gear trains. In simple gear trains, the final gear ratio is determined by the driver and driven gears.
What is an example of a compound gear train?
A gear train is called a compound gear train if there is more than one gear on each link. An example is shown above. In a compound gear train there may be some idler gears. The gear ratio for the whole gear train can be determined by considering the gear ratio for each gear pair.
How to calculate the gear train?
Step-1 : GR (1-2) = 30/40 = 0.75
What are compound gears used in?
Gear Systems. Compound gears are used in engines, workshop machines and in many other mechanical devices. In the diagram, gear ‘A’ is actually two gears attached to each other and they rotate around the same centre. Sometimes compound gears are used so that the final gear in a gear train rotates at the correct speed.