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Show me your Universal Joints

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Psionic001, Feb 9, 2019.

?

Do you make your own Joints or buy after market

  1. Designed and Built my own joints

    28.6%
  2. Purchased after market

    61.9%
  3. Found another way to use joints

    4.8%
  4. I don't use joints

    4.8%
  1. Psionic001

    Psionic001 Active Member Gold Contributor

    Joined:
    Mar 5, 2017
    Messages:
    138
    Location:
    Sydney
    Balance:
    1,002Coins
    Ratings:
    +59 / 1 / -0
    My Motion Simulator:
    Motion platform, 6DOF
    I make them and I’m in Sydney. Takes a few weeks to have them fabricated in a factory in China. Will PM you.
  2. Tóth Péter András

    Tóth Péter András TPA

    Joined:
    May 2, 2023
    Messages:
    19
    Location:
    Budapest, Hungary
    Balance:
    140Coins
    Ratings:
    +3 / 0 / -0
    My Motion Simulator:
    2DOF, Arduino
    Do you still make them? Can I order?
  3. Psionic001

    Psionic001 Active Member Gold Contributor

    Joined:
    Mar 5, 2017
    Messages:
    138
    Location:
    Sydney
    Balance:
    1,002Coins
    Ratings:
    +59 / 1 / -0
    My Motion Simulator:
    Motion platform, 6DOF
    Please PM me
    Cheers
  4. Valentin1985

    Valentin1985 New Member Gold Contributor

    Joined:
    Apr 5, 2022
    Messages:
    11
    Balance:
    - 60Coins
    Ratings:
    +4 / 0 / -0
    My Motion Simulator:
    2DOF, AC motor
    Great job. I used car parts. They work great in my project. But I had to modify the grinder

    Attached Files:

  5. Psionic001

    Psionic001 Active Member Gold Contributor

    Joined:
    Mar 5, 2017
    Messages:
    138
    Location:
    Sydney
    Balance:
    1,002Coins
    Ratings:
    +59 / 1 / -0
    My Motion Simulator:
    Motion platform, 6DOF
    Hi, yes you can order.
    They are custom CNC machined from 7075 aluminium, and I can generally modify the design, finish, and anodising colour to spec. each individual Aluminium joint (2 pieces of aluminium) costs $100usd plus shipping when purchasing a set of 6 or 12 joints. Manufacture time s approximately 3-4 weeks.


  6. Tóth Péter András

    Tóth Péter András TPA

    Joined:
    May 2, 2023
    Messages:
    19
    Location:
    Budapest, Hungary
    Balance:
    140Coins
    Ratings:
    +3 / 0 / -0
    My Motion Simulator:
    2DOF, Arduino
    Thank you. I found a cheaper solution. If it works fine, I'm gonna stick to it.
    • Like Like x 1
  7. Rodeo5150

    Rodeo5150 ROOKIE BUT LEARNING FAST Gold Contributor

    Joined:
    Mar 21, 2019
    Messages:
    210
    Location:
    Antioch, CA, United States
    Balance:
    1,233Coins
    Ratings:
    +51 / 0 / -0
    My Motion Simulator:
    Arduino, 6DOF
    I designed them in Tinkercad and 3d printed in carbon fiber pla with my ender 3. Some of the top peices are in PETG cuz I ran out of cf-pla and petg is half the price lol 16911576793168106422815298818844.jpg 16911577122656933142651600474923.jpg

    20230727_181245.jpg 20230727_181236.jpg 20230727_181233.jpg 20230727_181245.jpg 20230727_181236.jpg 20230727_181233.jpg
  8. Psionic001

    Psionic001 Active Member Gold Contributor

    Joined:
    Mar 5, 2017
    Messages:
    138
    Location:
    Sydney
    Balance:
    1,002Coins
    Ratings:
    +59 / 1 / -0
    My Motion Simulator:
    Motion platform, 6DOF
    I can’t comment on the design as the photos are so dark and blurry.
    Are you confident 3D printing will take the loads required?

  9. Rodeo5150

    Rodeo5150 ROOKIE BUT LEARNING FAST Gold Contributor

    Joined:
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    Antioch, CA, United States
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    Ratings:
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    My Motion Simulator:
    Arduino, 6DOF
    I think so I made them out of carbon fiber and petg I believe a carbon fiber PLA and the top sections of the mounts are out of petg because I ran on a carbon fiber so yes I think so they are extremely strong the petg I'm a little worried about but the carbon fiber absolutely not I'm sure that's going to hold. And I won't lie I'm a little concerned I am that's why the the top piece of the mounts are they go through they go around the the cross bearing through the mount and into a steel plate that mounts to another steel plate that's connected to the actuator so the bottoms are made out of carbon fiber which they can be they can go around this the cross bearing through the mount and then into the metal of my base when bolted so it can be made very strong I believe I'm hoping they're going to hold
    Last edited: Aug 5, 2023
  10. Rodeo5150

    Rodeo5150 ROOKIE BUT LEARNING FAST Gold Contributor

    Joined:
    Mar 21, 2019
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    210
    Location:
    Antioch, CA, United States
    Balance:
    1,233Coins
    Ratings:
    +51 / 0 / -0
    My Motion Simulator:
    Arduino, 6DOF
    16912100937105810434360376300852.jpg 16912101376447155381784486463842.jpg 16912101714147527153708009948565.jpg 1691210215128262090448633188538.jpg 16912102398546107091330515279662.jpg 16912102650611410978085195532768.jpg
    • Like Like x 1
  11. Rodeo5150

    Rodeo5150 ROOKIE BUT LEARNING FAST Gold Contributor

    Joined:
    Mar 21, 2019
    Messages:
    210
    Location:
    Antioch, CA, United States
    Balance:
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    Ratings:
    +51 / 0 / -0
    My Motion Simulator:
    Arduino, 6DOF
    How much
  12. Rodeo5150

    Rodeo5150 ROOKIE BUT LEARNING FAST Gold Contributor

    Joined:
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    +51 / 0 / -0
    My Motion Simulator:
    Arduino, 6DOF
    Very nice work.
    Would it be possible for you to share your .STL files with me?
  13. Rodeo5150

    Rodeo5150 ROOKIE BUT LEARNING FAST Gold Contributor

    Joined:
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    Antioch, CA, United States
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    Ratings:
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    My Motion Simulator:
    Arduino, 6DOF
    Awesome 3D print quality man how do you get it to look so nice and so perfect
  14. Rodeo5150

    Rodeo5150 ROOKIE BUT LEARNING FAST Gold Contributor

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    My Motion Simulator:
    Arduino, 6DOF
    I really like this joint would you please share your STL files with me
  15. Dirty

    Dirty Well-Known Member Gold Contributor

    Joined:
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    Sure!
    Fusion360 project here: https://a360.co/3yPN6ZU
    upload_2023-8-5_22-1-13.png
    All parts print without supports. PETG @285°C


    ...or did you mean those?:
    Lower: https://a360.co/3zUtapW
    upload_2023-8-5_22-4-12.png

    Upper: https://a360.co/3DWZ1Zu
    upload_2023-8-5_22-4-2.png

    Let me know, if you need STLs. And be sure to use actual shoulderbolts, not just ordinary hex screws.
    upload_2023-8-5_22-9-28.png


    I will be travelling (Vancouver and Portland) for the rest of August, so I might take a few days to answer.

    Cheers... Dirty :)
    • Like Like x 1
    • Friendly Friendly x 1
    • Useful Useful x 1
  16. Rodeo5150

    Rodeo5150 ROOKIE BUT LEARNING FAST Gold Contributor

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    +51 / 0 / -0
    My Motion Simulator:
    Arduino, 6DOF
    Hey man thank you very much I appreciate the hell out of that man thank you. Yes sto files would be easier because I don't have Fusion 360 at the moment so actually it's some STL files would be better for me if you could that would be great
  17. Dirty

    Dirty Well-Known Member Gold Contributor

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    Here are the STLs, but you should definitely get Fusion360 (it's free) to understand and adapt the design. 3D printing allows for a highly integrated design, meaning you can pack a bunch of functions into the same part. On the other hand you will then get a part that is specific to your needs only.

    Screenshot 2023-08-09 at 07.24.28.png

    In this case here, you should adapt the design to match the diameter of your rods, the method of mounting them to the rods, the dimensions of the bearings you want to use, the dimension of the thread (metric or imperial?). And also, if your actuators are not internally constrained, you can omit the axial bearing on the single-sided design alltogether.

    Mechanical design is a solution to a problem. Make sure that the solution matches the problem! Or even better: Tailor the solution to your problem for best results :thumbs

    Cheers,... Dirty :)

    Attached Files:

    • STL.zip
      File size:
      2.4 MB
      Views:
      104
    • Friendly Friendly x 1
    • Useful Useful x 1
    Last edited: Aug 11, 2023
  18. Rodeo5150

    Rodeo5150 ROOKIE BUT LEARNING FAST Gold Contributor

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    Antioch, CA, United States
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    +51 / 0 / -0
    My Motion Simulator:
    Arduino, 6DOF
    Thank you so much bro. You say Fusion360 is free huh?
    I coulda swore it was a paid software...
    Thank for everything.
    Oh you mentioned my actuators..
    Heres some pics of the ones a made 20230818_201013.jpg 16927036405801240734944764619377.jpg 16927036957656685439441581007529.jpg
  19. Dirty

    Dirty Well-Known Member Gold Contributor

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    It is free for hobby use. The feature set of the free license is way enough.

    And if you work anywhere in education you can get an educational license to get a full-on version, but you won't need it.
  20. Rodeo5150

    Rodeo5150 ROOKIE BUT LEARNING FAST Gold Contributor

    Joined:
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    210
    Location:
    Antioch, CA, United States
    Balance:
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    Ratings:
    +51 / 0 / -0
    My Motion Simulator:
    Arduino, 6DOF
    Thank you so much actually you know in CURA you can just download the whole STL file and it comes out as one completed universal joint right, but then if you right click and choose a break into pieces, it disassembles the whole universal joint for you and you can just delete what you don't want to print. like the nuts and bolts that u want to be metal. it's pretty neat.
    I did download FUSION360 tho.

    so yeah I was able to get some printed. man these universal joints these things are nice man they are built tough I really really like the universal joints I think you did an excellent job