Pulleys and Belts Flashcards
1
Q
What is the purpose of belt drives?
A
They transfer power and motion from one place to another
2
Q
Why are pulleys not efficient?
A
Mechanical losses (e.g. heat, harmonics, etc.)
3
Q
What causes chatter from a machine?
A
Equispace of teeth on a blade
4
Q
What are different types of pulleys?
A
Round
Vee
Stepped
5
Q
What is good and bad about flat belts?
A
Good: suitable for high speed
Bad: low starting torque, more likely to slip
6
Q
What does grit buildup on a chain drive cause?
A
Premature wear or failure
7
Q
How do you calculate the velocity ratio and speed of a pulley?
A
(Same as with gears)
Driven/ drive
S1 x T1 = S2 x T2
8
Q
What are different types of belts?
A
Toothed drive belt
Flat drive belt
Chain drives
