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What is the best way to make gears in Blender 3D? [message #74900] Tue, 17 September 2013 01:39 UTC Go to next message
avatar stevenr4  is currently offline stevenr4
Messages: 4
Registered: July 2013
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I've seen a ton of gears along many different prints on this site. Many of which actually function within the print. I've never made gears before, let alone ones that could work without jamming.

My question is, for those who use blender 3D, what is the best way to make gears? I mean, I could try to do it by copying and pasting teeth one by one, or try rotating them around a certain point, or even trace out a good drawing of gears. But from what I've seen, I have to believe that there is a standard, or at least a better way, of making functioning gears.

Also, I was planning on counting the teeth to make sure there is a nice reduction ratio between certain gears in the system. I am planning on making something similar to this hand crank fan. http://www.youtube.com/watch?v=3eojAdYMT0g

Thanks! Very Happy
Re: What is the best way to make gears in Blender 3D? [message #74903 is a reply to message #74900 ] Tue, 17 September 2013 02:54 UTC Go to previous messageGo to next message
avatar FreeRangeBrain  is currently offline FreeRangeBrain
Messages: 219
Registered: April 2013
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I'd suggest looking up "involute gear" formulae if you're looking to make "real" gear teeth. I'm expecting a set of gears to arrive tomorrow, coincidentally enough. I modelled mine in Inventor and they have generally come out quite well. (I don't have a clue in Blender, but I'm sure someone on the forum does.)


Creativity - sometimes by the brute force method.
Re: What is the best way to make gears in Blender 3D? [message #74916 is a reply to message #74900 ] Tue, 17 September 2013 09:53 UTC Go to previous messageGo to next message
avatar JACANT  is currently offline JACANT
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Registered: July 2011
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You can create gears in Sketchup and Inkscape then import them into blender.

index.php?t=getfile&id=41136&private=0

  • Attachment: gears.png
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jacantdesign@gmail.com
Re: What is the best way to make gears in Blender 3D? [message #74951 is a reply to message #74900 ] Tue, 17 September 2013 17:56 UTC Go to previous messageGo to next message
avatar Keymaker  is currently offline Keymaker
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Registered: February 2013
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look for addon under add mesh category named Extra Objets. index.php?t=getfile&id=41170&private=0

If you want to create your own style, than is probably the best to use array modifier...

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The only thing that limits us is our imagination.
Re: What is the best way to make gears in Blender 3D? [message #76195 is a reply to message #74951 ] Sat, 05 October 2013 21:07 UTC Go to previous messageGo to next message
avatar TrainThingz  is currently offline TrainThingz
Messages: 101
Registered: March 2012
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Go here:

http://parametricparts.com/parts/8npxd6ur/

... set up your gear with the pitch and dimensions you need, then export it as STL ( See the [ DOWNLOAD ] button... ), and import it to Blender. It will save you hours of work.

Note to non-gearheads.... Pitch and pressure angles of gears that are supposed to mesh MUST match! Change only the number of teeth and (if necessary) shaft size while working with a single set.

Watch the tip of the tooth for the minimum dimension. That's where it's likely to be smallest.

If anyone creates a worm gear version that works with this, let us know!
Re: What is the best way to make gears in Blender 3D? [message #76204 is a reply to message #74916 ] Sun, 06 October 2013 04:16 UTC Go to previous message
avatar TrainThingz  is currently offline TrainThingz
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Registered: March 2012
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The Gears option for Sketchup isn't a regular part of the program - It's a plugin that has to be downloaded from a third party, and doesn't appear to work with Sketchup 2013 (the latest version). According to the download site, it works with SketchUp 6 & 7... several versions back.

 
   
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