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Unread 04-02-2009, 16:12
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Re: FP Gearbox: Last stage gear?

Normally this requires an involute gear cutter(or hob), of which there will be several for the same Diametrical Pitch value, as the profile of the cutter needs to change a bit due to the number of teeth. You can also grind a peice of tool steel to make a form tool and use it as a single point cutter. OR if the tooth profile is large enough, you can use a properly sized end mill to cut the gear on a 3 axis mill. However this would likely be a very hard thing to accomplish(in something other than plastic / wood), for reasons I wont go into here. So, if you have a 4 axis CNC or a manual mill with a dividing head, or rotary table look into the involute gear cutters.
If you want to search around some, another word for gear cutting is hobbing.
Here is one example
http://www.youtube.com/watch?v=VHTXa...eature=related
and here is another, using a different style cutter
http://www.youtube.com/watch?v=62yme...eature=related
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Justin Stiltner
Lead Robot Inspector, VCU Regional
Unmanned Systems Lab, Virginia Tech
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Last edited by Justin Stiltner : 04-02-2009 at 16:15.