Chapter 3 Unit 5

Question 1

What is a cam?

Answer 1

Similar to wheels they turn around an axle like a wheel but they’re not round

Question 2

What is the function of the cam follower?

Answer 2

Rests on cam and keeps it down

Question 3

What can also be used to hold a follower against a cam?

Answer 3

Spring

Question 4

How is reciprocating motion created?

Answer 4

When the irregular shape of the cam pushes the follower up and down

Question 5

What is the input motion?

Answer 5

Rotary motion

Question 6

Describe the eccentric cam

Answer 6

Starts rotating at its lowest point (A) and gradually go higher towards B then gradually lower until it reaches its lowest point again

Question 7

Describe a snail cam

Answer 7

Starts moving at its lowest point A. Gradually goes higher and higher up to its highest point B then suddenly drops down to A again

Question 8

Describe a pear cam

Answer 8

rotates from A to B, it stays at its lowest point. When it rotates from B to A, it goes gradually up to its highest point and then down towards point A again

Question 9

Describe a heart shaped cam

Answer 9

rotates from A to B, it is at its lowest point. When it rotates from B to A, it goes gradually up to its highest point, then down and up again. Then it goes to its lowest point at A and stays at the same height until it reaches B again