Gears Flashcards
1
Q
What is a gear
A
A toothed wheel that works with others to alter the relation between the speed of a driving mechanism and the speed of the driven parts
2
Q
Spur gears
A
Common type
The teeth are straight and cut and parallel to axle
Used when axle is required to rotate in the same place
3
Q
How is gear ratio calculated
A
Gear ratio= number of teeth on driven gear / number of teeth of driver gear
4
Q
Bevel gear
A
Aka crown and pinion
5
Q
Rack and pinion
A
Used to convert a rotational movement into a linear movement
6
Q
Worm gear
A
A mechanical arrangement consisting of a toothed wheel worked by a short revolving cylinder bearing a screw thread
