Open Differential Design

This is a simply design to show how an open differential works and how the basic components are assembled.

Maker/DIY

Creative Commons Attribution Noncommercial Share Alike

Commercial use is not allowed, you must attribute the creator, you may remix this work and the remixed work should be made available under this license.

Learn more or download attribution tags

Description

Thanks for checking out my open style gear differential! I have successfully printed this group of components several times with no issues, so please let me know if you have any problems.


I printed these components at 50mm/s and at a resolution of 100 microns on my Ultimaker 2 with the infill set at 15%. These are just the settings I used however so feel free to experiment if you want faster print times. For the orientation of the parts on the print bed, everything with a notch or long extruded pieces (side captures, ring gear, spider gear support, pinion support base, hand crank) I would recommend printing with the notch or extrusion facing up to minimize support structures. All of the gears should be printed laying flat on the printer bed with the teeth of the gear sticking up. 


The pictures uploaded after the render will correspond to steps 1-7 of the assembly process. Everything is a press fit and goes together smoothly, so if you find yourself using excessive force at any time assembling, refer back to the pictures, or simply ask for help!


Required components and quantity:

2 Spider Gears

2 Axel Gears

1 Pinion Gear

1 Ring Gear

1 Spider Gear Support

2 Main Axels 

1 Spider Gear Axel

1 Ring Gear Side Capture

1 Off-Side Gear Capture

1 Pinion Support Base

1 Hand Crank


While assembling, it is easiest to keep the assembly orientation the same as they are in the pictures. :)


Step 1: Take the 2 main axels and insert them through the 2 side captures. The ring gear side capture has a larger “rider” on it than the off side capture. The notches on both of the captures should be facing towards you.


Step 2: take the assembly on your left (the off side gear capture and axel) and slide the spider support on. Once you have the side capture and spider support on, line up the Hexagonal pattern on one of the axel gears with the axel and press it into place.


Step 3: Take the assembly from your right in step one (ring gear side capture and axel) and slide the ring gear on. Once the ring gear is in place, snap the other axel gear onto the axel.


Step 4: On the ring gear side assembly you will notice the two holes on the support structures extruding out of the gear. One of these holes goes clear through the support while the other does not. On the side with the open hole, line up one of the spider gears and twist/slide the shaft through the support structure and spider gear. Once you have one gear on, line up the other on the opposite side and push the shaft through until it is flush with the top of the hole. During this step be careful not to snap the support extrusion off of the ring gear, as it is not hard to do. 


Step 5: Here’s where it starts taking shape! Take the ring gear assembly and the spider support (off side) assembly and attach them together by lining up the notches in the spider support with the tips of the extrusions on the ring gear.


Step 6: Put the gear assembly aside for now…Take the pinion support base and slide the hand crank through it from the flat side to the side with the extrusions. there is a stop collar on the hand crank to bottom it out. Take the pinion gear, line up the hexagonal pattern, and press it onto the hand crank until there is no back and forth play of the assembly in the pinion support base.


Step 7: This is it! Take the gear assembly and the pinion base assembly and line up the extrusions on the pinion support base with the notches in both of the side captures. Once you press these together, you are done! 


To see the differential function, place it on the edge of a table and turn the hand crank while grabbing the handle on either main axel while the other axel magically keeps turning! Enjoy! :)

Materials and methods

-PLA
-Nylon
-ABS

Documents

Issues

Issues are used to track todos, bugs or requests. To get started, you could create an issue.

Comments

Ac80d506490a3b166fc42c21cab7dda9?default=blank&size=40joma added this to the 3d-printing collection ago
Ac80d506490a3b166fc42c21cab7dda9?default=blank&size=40joma added this to the tools collection ago
2ff3af25ad2f81eabf2ccbe0dece4797?default=blank&size=403dprintingnerd added this to the To Make collection ago
8e22009da21314bdf850232f9433a7cc?default=blank&size=40Dorito added this to the my collection collection ago
Ad30bd4fc7cfee699ef731976d949c4d?default=blank&size=40IBuild added this to the Toys collection ago
Mini aviator2 small png iconChris added this to the Cool Projects collection ago
Mini chill  simpsonized  rCurt added this to the Automotive collection ago
Mini thgttgKJunjoe added this to the Gears collection ago
3da49e5f162182fd3caf735ba7db70a3?default=blank&size=40Louis Garcia added this to the Mécanisme collection ago
57d0ffc9fac74fe9d6b1b7e08ede9482?default=blank&size=40gadgetsteve added this to the Gift ideas collection ago
3035ed9da24a6e26c264d5abbe5d7385?default=blank&size=40sungam94 added this to the stuff collection ago
439130abc394994d73efaa17a8ea12d5?default=blank&size=40filch20049 added this to the Technik collection ago
3d64913729af00844f753847bf291bc4?default=blank&size=40r3xx0n added this to the Zu Drucken collection ago
D638cb9cbd323f118e6470876bdf6791?default=blank&size=40Alex Canario added this to the Motores collection ago
741d818be84363a6f5c443ce709db564?default=blank&size=40mSquared added this to the Gears collection ago
Eed3e826dd8636015fb3e07a10f35f32?default=blank&size=40Eduardo added this to the Diferencial collection ago
Mini 0a75793ThijsJansen added this to the Fun collection ago
A531cdef4f7baf439ea9742a3e492ef5?default=blank&size=40Hindimied added this to the Interessante Dinge - Interesting Things collection ago
E6c814f86df628a30aab00e97c038ca4?default=blank&size=40Teos added this to the ciekawe collection ago
Mini monimweb1Alain Ducros added this to the differencial collection ago
3e891aab9df972d5249e6e57e6310975?default=blank&size=40BS printed this ago
Carousel thumb 20141217 220100
Printed on:
Zortax - Zortrax M200 3D-printer
Result:
Nearly perfect design apart from the fact, that my printer wasn't able to print perfect diameters for the holes and the gears. The gears and holes/axels should have tolerances of ~ .5mm so the spindles could spinn freely and the gears-teeth would fit perfectly.
1fa101dc63105d995f3406e72c414583?default=blank&size=40Mitch Pricer published this design ago