Question
Download Solution PDFWhat is the purpose of an idler gear used in gear trains?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Sometimes, two or more gears are made to mesh with each other to transmit power from one shaft to another. Such a combination is called a gear train.
When there is only one gear on each shaft, it is known as a simple gear train.
Since gear 1 drives gear 2, therefore gear 1 is called the driver and gear 2 is called the driven or follower.
The purpose of an idler gear used in gear trains is to have the required direction of rotation at the output shaft.
- It may be noted that when the number of intermediate gears (idler gear) is odd, the motion of both the gears (i.e. driver and driven or follower) is like.
- But if the number of intermediate gears is even, the motion of the driven or follower will be in the opposite direction of the driver.
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