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2. GEARS
3. Presentation Objectives Identify parts of the gear trainer
Identify gears
Identify gear terminology
Identify tooth terminology
Identify gear purpose
Determine RPM
Determine torque
4. Gear Trainer
5. What is a Gear? A gear is a toothed wheel
6. Spur Gear
7. Worm Gear Drive
8. Bevel Gears
9. Crossed Helical Gear
10. Harmonic Gear
11. Planetary Gear Train
12. Car Differential
13. Car Differential
14. Gear Terminology
15. Gear Terminology
16. Gear Terminology
17. Spur Gear Terminology
18. Spur Gear - Tooth Parts
19. Gear Tooth Size Called Diametral Pitch
20. Purpose of a Gear Energy Transmission
In the proper combination can be used to increase or decrease speed and torque
21. Gear Rotations
22. Determining Gear Rpm
23. What Is Torque? The turning effort (measured in inch-pounds or foot-pounds) that causes something to rotate. When torque produces rotation, then work is done.
24. Determining Torque
25. Importance Modern Multi Speed Bicycles
26. Also
27. Car 3 Speed Transmission
28. Gear Facts The rpm of the larger gear is always slower than the rpm of the smaller gear.
Mating gears always turn in the opposite direction.
Gears locked together on the same shaft will always turn in the same direction and at the same rpm.
Mating gears always have the same size teeth (diametral pitch).
The gear ratio between mating gears is the ratio between the number of teeth, the pitch diameters and the rpms.
29. Gear Review What is a gear?
Name 4 different types of gears.
What is torque and rpm?
What is diametral pitch & how is it shown?
List 10 places where gears are used.