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Wickie´s 6DOF Sim

Discussion in 'DIY Motion Simulator Projects' started by PeterW, Aug 3, 2019.

  1. hannibal

    hannibal Active Member

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    My Motion Simulator:
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    thank you for taking a moment to share!!!! @PeterW
  2. PeterW

    PeterW alias Wickie

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    last week I made the fine finish of my universal-joint-brackets. Here in Munich we have a company where you can rent a cabin for DIY glass shot blasting (https://www.braeuer-sandstrahlerei.de/).
    It was a lot of fun and cost only 20,- € total for all 18 parts. It took about 40 minutes time.
    highly recommendable! :) see picture:

    Wickie
    20190829_151320.jpg
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  3. PeterW

    PeterW alias Wickie

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    dear community!

    again some update of my project:
    The last weeks I made more thoughts about the upper part of the platform and the base

    [​IMG]

    As you can see I changed the design of the base – It was due to a proposal of my son - and what shall I say - we love it!
    For the material of the base I decided to make it from reinforced concrete. The reason for this material is because I wanted to have a stable and heavy base and minimum of vibration noise coming from the actuators.
    And last but not least - I think it will look super cool (at least in my opinion :) ).
    So we started to make a mould from wood and purchased cheap concrete for about 15,- € (for 90kg) - as it turned out it was too cheap !!! so during demoulding our base cracked. I also think we have been too unpatient and didnt wait long enough for hardening.
    So we decided to build a new mold - and due to the lessons we learned so far, the second mold became much better than the first one.
    Also this time the concrete we used was an expensive and special one that is usually used for making concrete furniture. The price was now 117,- (for 75kg). But believe me, it was worth all the money!
    Now the base is finished and we are super happy :)

    [​IMG]

    The weight of the base including the reinforcement is now about 80kg – so possible to carry with two or three persons.
    attached you can find all pictures

    Wickie

    Attached Files:

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  4. Jerry Atrick

    Jerry Atrick this is my sim Gold Contributor

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    Hi Wickie, fantastic job, and whom would have thought to use reinforced concrete, Genius :thumbs

    Regards Jerry
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  5. thefost

    thefost New Member

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    I am absolutely loving your build! If you end up releasing full details on your actuator I'm probably going to copy your entire build, it's fantastic :thumbs
  6. PeterW

    PeterW alias Wickie

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    hello thefost,
    when my simulator is ready (hopefully by the beginning of next year) I will release all construction models, drawings and sources to members for non-commercial use.
    If there are enough interested people, we can organize a collective order of parts that some people can't build themselves - we'll see.

    Greetings Peter
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  7. PeterW

    PeterW alias Wickie

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    My Motion Simulator:
    6DOF
    Hello all!

    Last week I received my high-speed quality ball screws from TBI Motion!
    The shop where I bought the ballscrews is called Tuli (https://www.tuli-shop.com/linear-mo...d-nuts/precision-ball-nuts/ball-nuts-sfh.html).

    upload_2019-10-4_21-40-3.png

    After the first attempt with cheap China ballscrews (which I had exchanged again because of the running noise), I finally decided for the 10 times (!!) more expensive quality ballscrews - hope they are worth their money and run quietly.

    Since all parts of my actuators are almost finished, I think the final assembly of the actuators can be done in the next weeks! I am sooooo corious.

    Wickie

    Attached Files:

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    Last edited: Oct 4, 2019
  8. thefost

    thefost New Member

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    Sounds great, I am keeping an eye on a few projects but right now yours is looking the most promising. If we do want to get some group buys going I'd be more than happy to help out, especially for USA based forum members.
  9. Gadget999

    Gadget999 Active Member

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    Do you think the motors have enough torque to run a 1610 ballscrew ?
  10. PeterW

    PeterW alias Wickie

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    Hi Gadget999
    Its diffucult to give a universally valid answer. The question is for what kind of simulator you would use the 1610 ballscrew. In case it is a weight balanced system I would say yes, but in a 6DOF sim that carrys a platform + driver with aprox. 180 kg, I would say that would be not a good combination.
    The question is why do you want to use a 1610 ballscrew?
    My thoughts about it:
    - When its because of speed: I dont think its necessary, because real 300mm/s under full load is really extreme fast. Any faster would scare me!
    - When you think that faster means the sim will follow fast and precise all position commands, then I think the 1605 is even more advantageous because the less load (torque) is on the ballscrew and motor, the faster the motor can accelerate and change direction.

    A maybe real reason to go for a 1610 ballscrew can be noise, comming from the (cheap) ballscrews.

    What I wrote is only my opinion based on my technical understanding - maybe I am completely wrong.
  11. adgun

    adgun Active Member

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    Hi Peter does youre new good brand ballscrews give les noice?
    regards Ad
  12. PeterW

    PeterW alias Wickie

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    Hi Adgun
    assembly of my actuators will be aprox in two weeks, so I think we will know it in three weeks
    Wickie
  13. adgun

    adgun Active Member

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    Hi if you are so far would you be so kind to post pickters from the ballcontact area from booth screws if possible.
    The noice could be visible
    Sorry for the bad english
    regards Ad
  14. Gadget999

    Gadget999 Active Member

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    Hi Peter,

    i had a discussion about the 1610 a while ago, we think bigger torque motors will work well with the longer pitch

    but until you try them back to back - you will never really know !
  15. PeterW

    PeterW alias Wickie

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    Hi guys
    some little update on my project. Yesterday I finished the last parts of all my 6 actuators - really all! - I can tell you guys - it was a lot, lot of work! - I think it have been alone more than 200 threads to cut!
    Today I gave the Zylinders some paint (same color than the later rubber-cover - RAL 7039).
    Wickie

    Attached Files:

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  16. SilentChill

    SilentChill Problem Maker

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    Nice work and a hell of a lot of work !!

    I'm still trying to get all my parts designed in sketchup for 3D printing, I'm hoping it will all work out and be strong enough, only time will tell, its slow going as I can't stop playing on my sim as it is lol I just need to strip it down and then I would get going a little faster
  17. Swatpilot

    Swatpilot New Member

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    Very nice, I may be interested in a group buy.
  18. PeterW

    PeterW alias Wickie

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    Hi all,
    some update to my project:
    This week, my son an me started the final assembly of the actuators. And I can tell you its such a good feeling to see the work growing and to see an end of the long tunnel :)
    Today we also built a simple wooden upper frame, just to be able to fix the 6 actuators provisional on the base and see the first time the overall dimensons- I can tell you guys, the simulator is really really huge and looks somehow dominant in my living-room - (luckily I am already divorced - otherwise I would probably still have that in front of me now :grin ).
    Wickie



    20191110_145256.jpg 20191031_110353.jpg

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  19. hannibal

    hannibal Active Member

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    what a work of art you have accomplished, @PeterW .. amazing...
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  20. Gadget999

    Gadget999 Active Member

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    PeterW

    liking the rig you have built

    are the top and bottom triangle shapes the same size ?

    what are the lengths of the equilateral triangle ?

    Regards