Large 3 stage planetary gearbox
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Published on June 21, 2012
Derived from
Tiny Planetary Gears Set
by aubenc
Description
I don't know if this is truly a derivative, as it was designed from scratch. But I did get inspired by aubenc's tiny planetary gear set ( thingiverse.com/thing:23030 ), so credit where credit is due :)
It was printed on A PP3DP UP!
EDIT: I previously wrote that the reduction ratio was 12.7:1. That is actually not true. The correct ratio is 3.33:1 pr. stage and 37:1 at the output shaft.
I designed it to show the capabilities of the UP! compared to the 20 times more expensive Dimension uPrint we also have at the institute.
It also shows our students that they can try out mechanical models designed in Solidworks without calculating in the rediculous material cost of the uPrint.
EDIT: I've added a ZIP file of all the components.... don't know why I didn't do this right away.... d'oh!
It was printed on A PP3DP UP!
EDIT: I previously wrote that the reduction ratio was 12.7:1. That is actually not true. The correct ratio is 3.33:1 pr. stage and 37:1 at the output shaft.
I designed it to show the capabilities of the UP! compared to the 20 times more expensive Dimension uPrint we also have at the institute.
It also shows our students that they can try out mechanical models designed in Solidworks without calculating in the rediculous material cost of the uPrint.
EDIT: I've added a ZIP file of all the components.... don't know why I didn't do this right away.... d'oh!
Instructions
The settings used on the UP! are:
.3mm z resolution
loose fill
4 layer surface depth
Most of the parts snap together fairly easily, but the square shaft is a pretty tight fit in the sun gear.
To make the lid easier to get on and off sand the surface of the pins on the lid with some 80 grit sandpaper.
The grip of the handle should rotate freely with the support removed
.3mm z resolution
loose fill
4 layer surface depth
Most of the parts snap together fairly easily, but the square shaft is a pretty tight fit in the sun gear.
To make the lid easier to get on and off sand the surface of the pins on the lid with some 80 grit sandpaper.
The grip of the handle should rotate freely with the support removed
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License
Large 3 stage planetary gearbox by mcentric is licensed under the Attribution - Share Alike - Creative Commons license.
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Has anyone performed a torque analysis on this assembly?
I'm a software developer, not an engineer. I have an interest in robotics. I'm trying to determine whether or not printed gearboxes can be used to do real work. How much torque can they stand? What RPM can they sustain? What sort of lubricant is required to operate?
Sorry for the really late reply! No function analysis of any kind has been done on it. It is purely for demonstration purposes :)