Mell What is a real life example of a compound gear train?
Used to either speed up or stepped down the speed of driven shaft and follower. Examples :- 1) Automobile 2) Clocks 3) Ships 4) Watches 5) Lathe Machines etc. 6. INTRODUCTION Each of the intermediate gears carries two gears except the driving and driven shafts.
Why are compound gears used?
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 compound gear box?
Abstract- A compound gear train is a combination of gears used to transmit motion and power from one shaft to another. The gears that make up a compound gear usually differ in size and have a different number of teeth. This is useful if there is a need to speed up or slow down the final output.
Is a bike a compound gear train?
On some bicycles there is only one gear and, therefore, the gear ratio is fixed, but most modern bicycles have multiple gears and thus multiple gear ratios. For a bicycle to travel at the same speed, using a lower gear (larger mechanical advantage) requires the rider to pedal at a faster cadence, but with less force.
What is simple and compound gear train?
In simple gear only one gear in every shaft and there is a relative motion among shaft axis. In compound gear there is extra than one gear on shaft which is firmly fix and mash through the gear on another shaft forming gear train. In a compound gear train, every gear has its own shaft for rotation.
Which gear train is used in automobile?
Epicyclic gear trains, which contain at least four coaxial links, are commonly used in automotive automatic trans- missions. The number of speed ratios of an automatic transmission is determined by the kinematic structure and corresponding clutching sequence of its epicyclic gear train.
Where is a compound gear used?
Compound gear trains involve several pairs of meshing gears. They are used where large speed changes are required or to get different outputs moving at different speeds.
Where is a gear train used?
1 INTRODUCTION. Planetary gear train (PGT) has been widely used in the transmissions of helicopters, automobiles, wind turbine, aircraft engines, etc. The main advantages of this transmission are its high efficiency, its compactness, its large transmission ratio and its large power-to-weight ratio, etc.
How do you know what gear ratio you have?
To calculate the gear ratio: Divide the number of driven gear teeth by the number of drive gear teeth. In our example, it’s 28/21 or 4 : 3. This gear ratio shows that the smaller driver gear must turn 1,3 times to get the larger driven gear to make one complete turn.
What is the gear ratio formula?
The gear ratio is calculated by dividing the output speed by the input speed (i= Ws/ We) or by dividing the number of teeth of the driving gear by the number of teeth of the driven gear (i= Ze/ Zs).
What are the gears 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. Let N1 = Speed of driving gear 1,
Which is an example of compounded gear oil?
Compounded gear oils are also used in bearing applications or in gear boxes operating in high water contact or high steam areas. Paper mills are an example of where an OEM might call for products such as these because of operating temperatures, water-type application, and viscosity needs.
What is a compound gear in a lathe machine?
A compound gear is a number of gears fixed together. Consequently, they rotate at the same speed. The gears that make up a compound gear usually differ in size and have a different number of teeth. This is useful if there is a need to speed up or slow down the final output.
How many gears does a simple gear train use?
IDLER GEAR SIMPLE GEAR TRAIN COMPOUND GEAR TRAIN A simple gear train uses two gears, which may be of different sizes. If one of these gears is attached to a motor or a crank then it is called the driver gear.