How does a cam and follower work?

A cam and follower mechanism is a profiled shape mounted on a shaft that causes a lever or follower to move. Cams are used to convert rotary to linear (reciprocating) motion. ... The follower maintains contact with the cam through the force of gravity or by a spring.

1. Does a cam and follower increase speed?
2. What is the difference between a cam and a follower?
3. What is the advantage of using a chain drive over spur gears?
4. Which gear train provides more torque?
5. What is an example of a cam and follower?
6. How does a cam work?
7. Why is there a roller on the end of the follower?
8. Can a chain & sprocket system slip?
9. What is the disadvantage of chain drive?
10. What is better a belt or chain garage door opener?
11. What gear train would you use to ride up a hill?
12. How many teeth should a gear have?
13. Why is an idler gear used in gear trains?
14. Where are knife edge follower used?
15. When contact between cam and follower is rolling is called?
16. What offset followers?

Does a cam and follower increase speed?

A Cam and Follower is very similar to a crank and slider. The input is always a gear called a cam which is shaped similar to a half moon. ... Since the input and the output are not similar and do not have teeth there is no gear ratio and no change in torque and speed.

What is the difference between a cam and a follower?

Followers move vertically to the axis of the cam when the cam moves in a reciprocating motion. The follower is a part of a machine that follows the cam that is either oscillating or reciprocating in motion. In brief, a driver member is a cam, while a driven member is known as the follower.

What is the advantage of using a chain drive over spur gears?

*The advantage of a chain drive that uses sprocket gears over using spur gears is the ability to transfer torque and speed over longer distances. What type of movement does the Input gear do?

Which gear train provides more torque?

Torque is the measure of twisting force, calculated as the product of circumferential force multiplied by the radius of the gear. This means that bigger gears will have more torque than smaller gears because of the larger radii of the gears.

What is an example of a cam and follower?

The cam and follower mechanism is widely used for operating the inlet and exhaust valves of internal combustion engines. They are used in wall clocks and the feed mechanism of automatic lathe machines. They are also used in paper cutting machines and weaving textile machinery.

How does a cam work?

How do cams work? Cams generally do the opposite job to cranks: they turn rotary motion into reciprocating motion. Whatever you need to move up and down (or back and forth) rests on top of an oval wheel, sometimes mounted off-center (the cam). As the cam rotates, the object it supports rises up and down.

Why is there a roller on the end of the follower?

When the contacting end of the follower is a roller, it is called a roller follower, as shown in Fig.). Since the rolling motion takes place between the contacting surfaces (i.e.the roller and the cam), therefore the rate of wear is greatly reduced.

Can a chain & sprocket system slip?

The disadvantage of the chain and sprocket drive is that it can be noisy and more expensive than a belt and pulley drive system. Chain and sprocket drives are not used on some applications such as drilling machines and lathes precisely because the chain and sprocket drive does not allow slip.

What is the disadvantage of chain drive?

Disadvantages of chain drive

Conventional chain drive suffers vibrations due to chordal effect. The production of chain drive is higher than belt drives. The chain drive needs accurate and careful mounting. The chain drive need careful maintenance, lubrication and slack adjustments.

What is better a belt or chain garage door opener?

The chains used on residential garage door openers typically have higher tensile strength and greater lifting capacity than belts. They also may last longer in certain applications.

What gear train would you use to ride up a hill?

Uphill: Approach uphill situations with an appropriate amount of momentum, a higher gear (3rd in an automatic transmission) and less throttle to reduce torque, which also reduces wheel spin. The last thing you want to do is get halfway up the hill, lose traction and begin to spin your wheels.

How many teeth should a gear have?

So, the minimum teeth number for standard gears is 17.

Why is an idler gear used in gear trains?

The purpose of an idler gear used in gear trains is to have the required direction of rotation at the output shaft. ... 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.

Where are knife edge follower used?

The Knife Edge Follower: This is the simplest type, is not often used due to the rapid rate of wear. When it is adopted, it is usually for reciprocating motion, running in slides and there is considerable side thrust, this being a component of the thrust from the cam.

When contact between cam and follower is rolling is called?

Explanation: It is the angle between the direction of the follower motion and a normal to the pitch curve. This angle is very important in designing a cam profile. ... Explanation: When the contacting end of the follower is a roller, it is called a roller follower.

What offset followers?

Offset follower: The center line of the follower does not pass through the center line of the cam shaft. The amount of offset is the distance between these two center lines. The offset causes a reduction of the side thrust present in the roller follower.