| WIP: Gears [message #162] Fri, 14 March 2008 09:36 UTC |
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Just experimenting a bit with some mechanical stuff here. I want to create a cube with gears on all sides that actually work! I think that with four gears (like in the screenshot), it'll work but I'm still figuring out what to add to the top and bottom (adding the same gears to the top and bottom would lock up the device, I think?)
What do you think?
Bart
Community Manager Europe | Shapeways
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| Re: WIP: Gears [message #167 is a reply to message #162 ] Mon, 17 March 2008 14:46 UTC |
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Hi Bart,
Nice Gadget...!!! I have been trying to figure out your device and I think that by adding a similar gear to the top and/or bottom of the cube the device will stop working. Not if you want all gear to keep rotating that is. Or am I mistaking here...?
Grtz,
Rob.
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| Re: WIP: Gears [message #169 is a reply to message #168 ] Mon, 17 March 2008 21:22 UTC |
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Hi Bart,
ahum complicated and useless. I like it? 
How did you compute those gears? Did you use templates?
regards,
Peter
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| Re: WIP: Gears [message #170 is a reply to message #169 ] Wed, 19 March 2008 07:54 UTC |
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I used a Python script for Blender to calculate the gears. It's quite old and doesn't work very well anymore so I only got the shape of one gear tooth(?). With a bit of manual spinning and filling up some holes I got these gears.
You can find that script here:
http://www.selleri.org/Blender/scripts/text.html
Cheers,
Bart
Community Manager Europe | Shapeways
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| Re: WIP: Gears [message #206 is a reply to message #170 ] Wed, 23 April 2008 22:29 UTC |
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Hi Bart,
2 hints
1. place the gears separately from the cube, aligned flat.
So, the layers of material form equal rims across all teeth. If your gears are placed vertical the modeled shape of the theeth at the 'äquator' are rougher than that at the poles.
2. on top of the cube you can place a planet-gear:
o
oOo
o
fine detail, laying flat, fun to watch.
(in the post, the scheme for the planet gear skipped the blanks but you know what i mean: 1 big Sun-wheel in the midlle and the 4 planet wheels around)
PS: heard anything from stefano? He left without a trace...
[Updated on: Wed, 23 April 2008 22:32 UTC]
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| Re: WIP: Gears [message #211 is a reply to message #162 ] Fri, 25 April 2008 12:27 UTC |
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Yeah not possible to add gears on top...
But perhaps you could add the same sort of thing as on the side of an old locomotive wheel... make something go up and down. Then you can do a piston as well!
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| Re: WIP: Gears [message #503 is a reply to message #218 ] Sat, 02 August 2008 14:28 UTC |
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You should use bevel gears for that. The current tooth profile is no good for 90 degrees angles. It will work, but it is not mechanically sound.
edit: I mean miter gears
[Updated on: Sat, 02 August 2008 22:00 UTC]
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| Re: WIP: Gears [message #554 is a reply to message #503 ] Mon, 04 August 2008 07:11 UTC |
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Ah, I'd never have figured that out on my own. I'll give those a try, thanks!
Bart
Community Manager Europe | Shapeways
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| Re: WIP: Gears [message #1277 is a reply to message #1268 ] Wed, 10 September 2008 12:50 UTC |
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Hey Whystler,
that's a cool idea! I think I'll have to revisit my old gearbox one of these days and give it a try 
Cheers,
Bart
Community Manager Europe | Shapeways
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