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Unread 27-02-2005, 14:23
sanddrag sanddrag is offline
On to my 16th year in FRC
FRC #0696 (Circuit Breakers)
Team Role: Teacher
 
Join Date: Jul 2002
Rookie Year: 2002
Location: Glendale, CA
Posts: 8,510
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Re: Change from External to Internal teeth

Sorry about the double post, I was going to delete one but it was late last night and I forgot. Anyhow, now that I know they are not the same, is there any way I can derive the correct internal profile from the external profile I have? I can't draw a proper single tooth. See, I need the drawing to be involute so I can take this drawing somewhere to be manufactured (edm, perhaps laser, etc.). I have a program (Geargen) that will make an involute external gear in a dxf, but not internal. Can I somehow convert it in Inventor or AutoCAD? Or are there any other programs that will make the drawing?

I found an involute internal gear on cbliss, but it does not seem to show anything when I open it. All the features are grey-ed out.

Is there any way to make a gear drawing good enough to cut in AutoCAD?
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Teacher/Engineer/Machinist - Team 696 Circuit Breakers, 2011 - Present
Mentor/Engineer/Machinist, Team 968 RAWC, 2007-2010
Technical Mentor, Team 696 Circuit Breakers, 2005-2007
Student Mechanical Leader and Driver, Team 696 Circuit Breakers, 2002-2004