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DianayJhon
Participant

Join Date: Jun 2011
Posts: 3

Adding angular velocity

09/29/2011 11:30 AM

Is there any way to add up shafts angular speeds, as shown below, using only gear box.

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Yahlasit
Guru

Join Date: Dec 2008
Location: Cd. Juarez, Chihuahua, Mexico.
Posts: 1023
Good Answers: 69
#1

Re: Adding angular velocity

09/29/2011 11:40 AM

Yes, it's called differential.

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DianayJhon
Participant

Join Date: Jun 2011
Posts: 3
#2
In reply to #1

Re: Adding angular velocity

09/29/2011 4:52 PM

Would it be, speaking of angular speed:

"Planet" + "Arm" = "Ring"
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DianayJhon
Participant

Join Date: Jun 2011
Posts: 3
#3
In reply to #2

Re: Adding angular velocity

09/30/2011 4:30 PM

I guess I have found the solution ...thanks to your tips.

Using the "tabular method" when all members are rotating, leads to:

ArmPlanetRingSun
Planetary geartrainaa+(N3/N2)ba+ba-(N3/N1)b
differentiela-b-a+ba+b

where a and b are evaluated from the known speeds of two of the members.

For a differentiel, we can add SUN and PLANET to obtain ARM...The problem here is how to connect a shaft to PLANET?

We can then use a Planetary gear train, with N1=N2 which lead to SUN + PLANET = 2 ARM
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