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Author Topic: Non-Circular Gear Theory  (Read 13415 times)
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ArtF
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« Reply #30 on: May 25, 2015, 05:04:40 PM »

hard to imagine how that rotates without shaft motion.. I dont doubt it does of course, its just hard to imagine. Smiley


Your good..

Art
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JustinO
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« Reply #31 on: May 25, 2015, 11:56:15 PM »

Nate, the additiona l axes make the math easier.
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Nate
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« Reply #32 on: June 03, 2015, 12:10:25 AM »

I printed up a pair, the meshing is not great, though I'll blame that on the print quality for now.  ... I'll probably print some more and see if I can make a working bevel gear turntable .

* ncg.jpg (0 KB - downloaded 167 times.)
* ncg2.jpg (0 KB - downloaded 166 times.)
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ArtF
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« Reply #33 on: June 03, 2015, 06:00:24 AM »

Nate

 For some reason they are zero bytes.. can you repost? Id like to see those...

Art
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Nate
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« Reply #34 on: June 03, 2015, 03:05:07 PM »

Let's try that again...


* ncg.jpg (816.86 KB, 2448x1348 - viewed 363 times.)

* ncg2.jpg (243.49 KB, 1604x1064 - viewed 334 times.)
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ArtF
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« Reply #35 on: June 03, 2015, 04:59:39 PM »

Im not so sure Id call those non-circular bevels.. its almost as if they need their own term....

Nice work,
Art
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Nate
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« Reply #36 on: June 04, 2015, 01:58:54 PM »

Im not so sure Id call those non-circular bevels.. its almost as if they need their own term....

Yeah, there's a nice visual effect when using smooth curves instead of chevrons.  I tend to call them 'macaroon gears' because of the way they look when the pitch angle is small.


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Nate
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« Reply #37 on: June 05, 2015, 11:59:24 PM »

I revised it with less eccentric ity, lower pitch, and larger pressure angle to mitigate print quality issues, and also fixed a rounding bug.   Now I have some gears that actually mesh.


* ncg1.jpg (1197.57 KB, 2256x1984 - viewed 370 times.)

* ncg2.jpg (756.14 KB, 1728x1380 - viewed 367 times.)
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ArtF
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« Reply #38 on: June 06, 2015, 05:57:49 AM »

Nice. I really can see why you call them Macaroon gears... Smiley

Art
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BobL
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« Reply #39 on: June 07, 2015, 03:55:49 PM »

Nate;

These look crazy, also amazing to know they actually roll.. Nice.


Cheers
Bob
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Gearotic Motion
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« Reply #40 on: June 12, 2015, 11:13:27 AM »

You can print your own if you like, though the stl files are a bit messy.

http://www.pedantic.org/~nate/stls/twolobebevel.stl
http://www.pedantic.org/~nate/stls/threelobebevel.stl

My prints weren't perfect, but after a little wearing in they work pretty well.
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ArtF
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« Reply #41 on: June 12, 2015, 08:12:53 PM »

Ill have to give it a shot..

Art
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