1. Simple Gear Train A. Driven Drive B. Driven Drive Mechanisms
Gateway To Technology®
Unit 2 – Lesson 2.2 – Mechanical Systems
Simple Gear Train A.
Driven
Drive B.
Driven
Drive gear is on the input shaft, driven gear is on the output shaft.
Drive

2. Simple Gear Train

3. Simple Gear Train with Idler
Mechanisms
Gateway To Technology®
Unit 2 – Lesson 2.2 – Mechanical Systems
Simple Gear Train with Idler
Driven
Drive
Idler

4. Bevel Gear Mechanisms Gateway To Technology®
Unit 2 – Lesson 2.2 – Mechanical Systems
Bevel Gear

5. Bevel Gear

6. Worm and Wheel Wheel Worm Mechanisms Gateway To Technology®
Unit 2 – Lesson 2.2 – Mechanical Systems
Worm and Wheel
Wheel
Ratio - The input axle turns 32 times every time the output axle turns once.
Worm

7. Worm and Wheel

8. Leadscrew Mechanisms Gateway To Technology®
Unit 2 – Lesson 2.2 – Mechanical Systems
Leadscrew

9. Leadscrew

10. Rack and Pinion Pinion Rack Mechanisms Gateway To Technology®
Unit 2 – Lesson 2.2 – Mechanical Systems
Rack and Pinion
Pinion
Rack

11. Rack and Pinion

12. Universal Joint Mechanisms Gateway To Technology®
Unit 2 – Lesson 2.2 – Mechanical Systems
Universal Joint
Angular Range – Discuss the purpose of a universal joint as being flexible, for example, when your vehicle hits a pot hole the drive shaft doesn’t break.
Flow of Power – If you turn the output shaft, will the input shaft turn?
Direction of Travel – Can the handle be turned both clockwise and counterclockwise?

13. Chain Drive Driven Drive Drive Driven Mechanisms
Gateway To Technology®
Unit 2 – Lesson 2.2 – Mechanical Systems
Chain Drive
Driven
Drive
Drive
Driven

14. Chain Drive

15. Crank and Slider Crank Slider Mechanisms Gateway To Technology®
Unit 2 – Lesson 2.2 – Mechanical Systems
Crank and Slider
Crank
Slider

16. Crank and Slider

17. Cam and Follower FOLLOWER CAM Mechanisms Gateway To Technology®
Unit 2 – Lesson 2.2 – Mechanical Systems
Cam and Follower
FOLLOWER
CAM

18. Cam and Follower