1. EMD 223 Machine Component Design Dr. Feizal Yusof ME – USM Room 3.22 ext 6316

2. Presentation outline Introduction to Gear system – Spur gear – Helical gear – Bevel gear – Worm gear Gear Manufacturing Kinematics of Gear Gear selection Strength of gear teeth

3. Classification of gears

4. Spur gears

5. Helical gears

6. Herringbone gears

7. Internal gears

8. Rack and pinion

9. Straight bevel gear

10. Spiral bevel gears

11. Hypoid bevel gears

12. Worm gears

13. Spiral gears

14. Summary of gear types and eval.

15. Law of gearing

16. Kinematics of gear

22. Gear meshing

23. more Kinematics

24. More Kinematics

27. Test your understanding!

28. solutions

34. Thank You – 24/2

35. Reference Juvinall and Marshek “Fundamentals of machine component design” Wiley International, 4 th Edition Spotts, M. F., Shoup, T. E., (1998) “Design of machine elements” 7 th ed, Prentice Hall, NJ. Open University UK Podcasts (2010)- Design and designing course. Shigley, J.E. Mischke, C.R. and Budynas, R.G., (2003) “Mechanical Engineering Design”, eds., McGraw Hill. Collins, J.A., (2003) “Mechanical Design of machine elements and machines” Intl. eds, Wiley. Hamrock, B.J., Schmid, S.R., Jacobson, B., (2005) “Fundamentals of Machine Elements” 2 nd eds, McGraw-Hill. http://www.brighthub.com/engineering/mechanical/articles/9932.aspx http://www.eggxpert.com/blogs/debbie/archive/2009/04/16/evolution-process- of-mobile-phone.aspx http://www.eggxpert.com/blogs/debbie/archive/2009/04/16/evolution-process- of-mobile-phone.aspx