Simple Planetary Gears
by jonducrou, published
Thing Info
Summary
Set of planetary gears and arms to hold the planet gears in place.
Based off OpenSCAD code from thing:7390 (after cutting out significant portions of it - because the original thing is much more than a toy).
The gear ratios are very interesting, and (at least at first) non-intuitive, depending on the part that is held stationary.
With a fixed Annulus or Sun, this gives 1:6.
With a fixed Planet carrier, this gives 1:5.
Instructions
-
Print it.
- Assemble.
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Could you color it? It would be cooler looking and easier to comprehend if the different types of parts were different colors.
Best regards,
Steve C.
I haven't got enough pretty colours - but check this out: http://www.thingiverse.com/derivative:21916http://www.thingiverse.com/der...
Jon,
I am trying to build a rope machine and this sun gear configuration looks like ti will work. I need to build a housing to hold the gears and have he 3 gears turn three small hooks. the middle gear can be motorized or cranked I think.
Anthony
Great place to calculate gears and ratios and all that kind of stuff...
http://woodgears.ca/gear_cutting/template.htmlhttp://woodgears.ca/gear_cutti...
Also can you post a DXF file from the scad file here for us guys with a laser cutter/engraver? thx
Is says above: "Derived from 1:216 gearbox" thing 7390.
But that has DiffPlanet.scad which contains a reference to this: "
&
lt;MCAD/involute_gears.scad
&
gt;"
There is nothing called "involute_gears.scad" in any of these places:
http://www.thingiverse.com/thing:7390 has "DiffPlanet.scad" but no "involute_gears.scad" which it refers to
http://www.thingiverse.com/thing:3575 has "parametric_" v4.0 and v5.0 names (must i rename them?)
http://www.thingiverse.com/thing:3534 has "parametric_involute_gear.scad" - change Diffplanet to match?
3543 refers to http://github.com/TheOtherRob/MCADhttp://github.com/TheOtherRob/... but it is a dead link
http://www.thingiverse.com/thing:3575 has the" parametric..." 4.0/5.0 again, no 'involute..." and leads to
http://www.thingiverse.com/thing:3547 "the original", which says "404 You've reached the end of thingiverse"
http://www.thingiverse.com/thing:3001 has something with a similar filename, but in python
http://www.thingiverse.com/GregFrosthttp://www.thingiverse.com/Gre... doesn't refer to his script at all.
NOTHING in THINGIVERSE seems to have "involute-gears.scad".
Searching "GregFrost's involute gear script" in the wild:
gives http://www.makerbot.com/blog/tag/gregfrost/http://www.makerbot.com/blog/t... which has the same-old.
gives links back to things 3547
&
amp; 3575, which I covered before.
What does everyone else know that I'm clueless about?
Waaah! (where's my pacifier).
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