Thingiverse
1379:1 Compound Planetary Gearbox by Gear_Down_For_What
by Thingiverse
Last crawled date: 3 years, 1 month ago
Featured In These YouTube Videos:
Four in series (3.6T to one) - https://youtu.be/nvRgVUEBfp0
Torque testing and back-driving test - https://youtu.be/tgJUiEC9_-A
Three in series (2.6 Billion to 1) and gear ratio calculation - https://youtu.be/sNG63sWiV9k
Two In series(1.9M to 1) and explanation - https://youtu.be/VnWY0r1r9lQ
Torque Capabilities
Please know that i designed this gearbox for a demonstration model so that it would be easy for everyone to understand how a differential planetary works, for that reason i omitted the 3rd module that increases the torque capabilities.
Because of that, this gearbox cannot handle much load and it will start to skip teeth at around 3.5FT-LBS. There is more info on this in the youtube videos.
How This Works
1,379 Turns of the input sun gear will result in ring gear #2 making one full rotation.
These are designed to be able to mount them in series on the channel, or drive them with the included stepper motor mount. You will need to scale the channel longer if you want to use two gearboxes and the stepper motor mount on the same channel, but keep in mind it is very boring to watch the second gearbox rotate, as it is very slow.
This gearbox can not be back-driven, every piece of plastic on it will snap before you get the input to turn.
Gearing Information:
The gear ratio of two of these in series is 1,901,641:1
Three in series 2.6 Billion :1
Gears Used
Helix angle 30deg
Pressure Angle 20deg
Planetary Gearset #1 (Input End) Tooth Module = 1
Sun = 16T
Planets = 17T
Ring = 50T
Planetary Gearset #2 (Output End) Tooth Module = .846
Sun = 19T
Planets = 20T
Ring = 59T
Other Important Info:
CAD Files??
I Included the Fusion 360 Project with this, But the most recent version of this project can be downloaded in lots of different formats from this link:http://a360.co/2izCe0i
Feel free to create your own modifications and parts for this project, and if you do, make sure you create a remix and upload them, I'll link to them and possible create a collection for all of them!
Show Your Work!
Make a "make" and show everyone what you made! (make? :0) Everyone will thank you for it!
For More Cool Projects and Upgrades, Don't forget to Follow Me on Thingiverse and Subscribe to my Youtube Channel
Gear Down For What?
Four in series (3.6T to one) - https://youtu.be/nvRgVUEBfp0
Torque testing and back-driving test - https://youtu.be/tgJUiEC9_-A
Three in series (2.6 Billion to 1) and gear ratio calculation - https://youtu.be/sNG63sWiV9k
Two In series(1.9M to 1) and explanation - https://youtu.be/VnWY0r1r9lQ
Torque Capabilities
Please know that i designed this gearbox for a demonstration model so that it would be easy for everyone to understand how a differential planetary works, for that reason i omitted the 3rd module that increases the torque capabilities.
Because of that, this gearbox cannot handle much load and it will start to skip teeth at around 3.5FT-LBS. There is more info on this in the youtube videos.
How This Works
1,379 Turns of the input sun gear will result in ring gear #2 making one full rotation.
These are designed to be able to mount them in series on the channel, or drive them with the included stepper motor mount. You will need to scale the channel longer if you want to use two gearboxes and the stepper motor mount on the same channel, but keep in mind it is very boring to watch the second gearbox rotate, as it is very slow.
This gearbox can not be back-driven, every piece of plastic on it will snap before you get the input to turn.
Gearing Information:
The gear ratio of two of these in series is 1,901,641:1
Three in series 2.6 Billion :1
Gears Used
Helix angle 30deg
Pressure Angle 20deg
Planetary Gearset #1 (Input End) Tooth Module = 1
Sun = 16T
Planets = 17T
Ring = 50T
Planetary Gearset #2 (Output End) Tooth Module = .846
Sun = 19T
Planets = 20T
Ring = 59T
Other Important Info:
CAD Files??
I Included the Fusion 360 Project with this, But the most recent version of this project can be downloaded in lots of different formats from this link:http://a360.co/2izCe0i
Feel free to create your own modifications and parts for this project, and if you do, make sure you create a remix and upload them, I'll link to them and possible create a collection for all of them!
Show Your Work!
Make a "make" and show everyone what you made! (make? :0) Everyone will thank you for it!
For More Cool Projects and Upgrades, Don't forget to Follow Me on Thingiverse and Subscribe to my Youtube Channel
Gear Down For What?
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