Kinematics with MicroStation Ch06O Epicyclic Gear Trains

Complete Kinematics course made in MicroStation http://www.Bentley.com ; for deeper, intuitive learning without abstract formality and dry rigor for its own sake.

This video introduces the concept of epicyclic gear trains, how dramatically they differ and their degree of freedom using animation. Its application and benefit in gear boxes and a schematic representation is also presented.

0:17 How are they different from simple gear trains?
0:30 Demonstration using two identical coins
1:17 ANIMATION of the rolling coin trick
1:50 Conclusion!
2:02 Replacing coins with gears
2:10 Planet and sun gears
2:19 Generalizations
2:32 Arm and annulus or ring gear
2:57 Degree of Freedom
3:10 ANIMATION like a simple gear train with arm fixed
3:32 ANIMATION motion of arm added
3:46 Advantage of more DoFs -- Gear Box!
4:36 Schematic representation
4:56 Calculation of number of teeth using the schematic

Category:

Education

Tags:

• Epicyclic Gear Train
• Epicyclic Gears
• Velocity Ratio
• Epicyclic Gear Box
• Schematic Representation
• Animation Epicyclic Gears
• a Coin Trick
• Kinematics
• Mechanisms
• MicroStation
• Bentley
• Ujjwal Rane
• Mechanical Engineering

[willza13]

I still don't understand why the rotating coin had to rotate twice inorder to move all the way around the stationary coin.

[UjjwalRane]

@willza13 Instead of the moving coin, imagine a car being driven around. Will it undergo one complete rotation after the round trip? Now in addition to this imagine the car is 'tumbling' instead of being driven around. It will undergo more rotation right? The moving coin is doing both these things at the same time.

HTH

[tedcoughran]

well narrarated, thanks man

[UjjwalRane]

@tedcoughran You are welcome! Thanks for watching it. Hope you find the other clips on gears useful too.

[sabihus]

wonderfull presentation thanks. may god give more knowledge to share and develope the entire universe.

[UjjwalRane]

@sabihus Thank you for that wonderful wish!

[khunadi]

very helpful..thank you

[rushigajjar]

thx



[UjjwalRane]

@n21crowns You are welcome! Hope you had as much fun watching it as i had making this one.

[n21crowns]

Really useful for understanding the working principle of epicyclic gears.. thnx...