Cams Flashcards
What does a cam do
A cam changes the input motion (which is usually a rotating motion) to a reciprocating motion( which is a motion that moves backwards and forwards)
How many parts does a cam have
A cam has two parts the “follower” and the “cam profile”
What does one cycle mean
One rotation/revolution of the cam
What does dwell mean
When the cam rotates but the follower does not rise or fall
What does the rise mean
The rise is the part of the campaign that cause the follower to rise
What is the fall
The part of the cam that cause the follower to fall
What are the different types of followers
Flat follower
Point follower
Roller follower
Offset follower
What the cam profile
It is the shape of cam
What are different types of cam shapes
Pear
Eccentric
Heart
Drop
What does a pear shaped cam do
Pear shaped cars are used on the shafts of cars. The follower remains motionless for about half the cycle of the cam and during the second half is rises and falls
What does a eccentric cam do
Circular cams or eccentric cams can produce a smooth motion. These cams are used in steam engines
What does a heart shaped do
Heart shaped cams allow the follower to rise and fall in uniform velocity
What does the drop shaped cam do
It causes the follower to remain motionless for about half a cycle before gently rising and falling
