This video is part of a raw unedited lecture series about traditional mechanisms and mechanical systems given by Professor Jonathan Hopkins at UCLA. Specifically, Topic 5 introduces the fundamental principles underlying gear design (e.g., involute gear tooth profiles, pitch point, pitch circle, base circle, addendum and dedendum circles, etc.). Principles of misalignment, backlash, interference, and undercutting are all discussed in the context of spur gears. Many other kinds of gears are introduced including internal gears, rack and pinion gears, worm gears, helical gears, square gears, nautilus gears, elliptical gears, etc.). The principles that govern gear box transmissions are also discussed and the mathematics necessary to calculate the first and second-order kinematic coefficients of mechanisms that use external, internal, or rack and pinion type gears are provided. This theory can also be applied to epicyclic or planetary gear transmissions.
Additional course resources are posted to Professor Hopkins’ website:
www.flexible.seas.ucla.edu
Copyright:
Some of the images used in this series’ lecture slides were collected a long time ago prior to my heightened knowledge and concern of copyright issues. As such, it’s possible that some of the images or animations used in these lectures are a potential copyright infringement. Thus, if you identify any image that belongs to you and you are not ok with me having it in my lecture, please contact me directly and I will remove or update any part of these lectures to be in compliance with your wishes. I’d also be happy to acknowledge you in this description. My email can be found on my website.
Disclaimer:
Responsibility for the content of this video is my own. The University of California, Los Angeles is not involved with this channel nor does it endorse its content.
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