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Unread 09-04-2004, 18:00
sanddrag sanddrag is offline
On to my 16th year in FRC
FRC #0696 (Circuit Breakers)
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Re: Lasercutting Spur Gears?

Quote:
Originally Posted by ChrisH
The shape of the involute surface of the gear tooth does vary with changing diameters, but the other parameters (tooth height, addendun, dedendum, etc) remain the same. So you wouldn't want to design a 10 tooth gear and then just copy that tooth for a 60 tooth gear.

The interesting thing is that for conventionally made gears, you only need one hobb per pitch. All gears of a given pitch can be made from a single hobb, which is fairly straight forward to design. One instance where the old way might really be easier.

ChrisH
Could you please explain to me (or show a picture) of what the involute surface and hobb is? Thanks.
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Teacher/Engineer/Machinist - Team 696 Circuit Breakers, 2011 - Present
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Technical Mentor, Team 696 Circuit Breakers, 2005-2007
Student Mechanical Leader and Driver, Team 696 Circuit Breakers, 2002-2004