The file '43.3:1 Compound Planetary Gearbox For Robotic Arm Project! 3D Printer Model' is (stl) file type, size is 45.3MB.
4/27/17-Made another version of this with a higher gear ratio.
https://youtu.be/8H3fbxzmF9w
Align the planet gears in order as shown in the main picture, insert a sun gear, Snap Ring Gear #1 on, Inset all sun Gears, snap the other 2 or 3 ring gears on, also, you will need to close the gap in the rings before you spin this gear set or else it could skip teeth and get out of alignment, for this i have included the ring closures, that fits over all the rings
When you rotate the one piece sun gear, The Planet gears orbit that gear, when the Planet Gears make a full 360 Degree rotation around the Sun Gears, Ring Gear #2 and Ring Gear #4 will move 27.7 Degrees, ( 2 Teeth)
The other important thing to realize here is that Ring Gears #1 & #3 will be at the same potential and Ring Gear #2 & Ring Gear #4 will be at the same potential
The most recent version of this project can be downloaded in lots of different formats from this link: http://a360.co/2wW8PDX
3_Module_Planet_Gears.stl | 172.3MB | |
4_Module_Planet_Gears.stl | 235.7MB | |
Not_For_Robotic_Arm_Project.stl | 15.9MB | |
One_Peice_Sun_Gear.stl | 19.4MB | |
Ring_Closures_For_Testing.stl | 446.0KB | |
Ring_Gear_1.stl | 11.2MB | |
Ring_Gear_2.stl | 9.4MB | |
Ring_Gear_3.stl | 11.2MB | |
Ring_Gear_4.stl | 9.5MB | |
Sun_Gear_4.stl | 11.6MB |