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Unread 08-05-2011, 23:54
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A_Reed A_Reed is offline
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Re: 3 motor gearbox

Quote:
Originally Posted by 548swimmer View Post
I've got the math behind how it will work down, I'm interested more in the construction aspect.

What motor characteristics need to align to pull off a gearbox with different motors?
If that's the case then all you have to worry about is matching speeds with the CIMs (whether COTS or custom) and mounting it with proper alignment to gear central to your other two CIMs. That comes down to simple geometry in CAD.

The one thing you are going to have to double check is the added torque and bending stresses to your shafts from the extra motors. What may have been overkill for 1-2 CIMs may be verging on 'just enough' for the added power. Diameters may have to be increased to maintain a reliable factor of safety on par with the standards set up by common designs and COTS items. Your stresses may check out and look very safe but for alignment and efficiency in spur gears it is better to design for deflections.

Last edited by A_Reed : 08-05-2011 at 23:58.
 


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