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Help generating spur gears!


Knz183

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Hey guys,

I'm new to using Inventor. I have a 2013 student version I'm working with and I'm stuck trying to generate a pair of spur gears. The ratio is 2-1 with the smaller gear being about 3". When I input my information I get error messages and my gears always end up over lapping where they're supposed to meet. Any help or advice will be useful. Thanks guys!

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More information is needed.

Pitch?

The diameter is specified at the pitch diameter - not the OD of the gear. The OD will be the PD+2*addendum.

What textbook are you using to learn about gears?

 

The gears produced by Inventor are rough approximations, not true involute toothform and therefore will overlap just a bit.

There is a way to output more accurate toothform - but it is usually overkill unless you will be making the gears yourself as most gears are purchased off-the-shelf.

Let me know what book you are using and I can walk you though the parameters.

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