1. For downloading SimTools plugins you need a Download Package. Get it with virtual coins that you receive for forum activity or Buy Download Package - We have a zero Spam tolerance so read our forum rules first.

    Buy Now a Download Plan!
  2. Do not try to cheat our system and do not post an unnecessary amount of useless posts only to earn credits here. We have a zero spam tolerance policy and this will cause a ban of your user account. Otherwise we wish you a pleasant stay here! Read the forum rules
  3. We have a few rules which you need to read and accept before posting anything here! Following these rules will keep the forum clean and your stay pleasant. Do not follow these rules can lead to permanent exclusion from this website: Read the forum rules.
    Are you a company? Read our company rules

Showroom 6DOF Compact Rectangular 7 Actuator Motion Platform (Not Stewart)

Discussion in 'DIY Motion Simulator Projects' started by d4vid, May 17, 2021.

  1. d4vid

    d4vid New Member

    Joined:
    May 16, 2021
    Messages:
    9
    Balance:
    88Coins
    Ratings:
    +25 / 0 / -0
    My Motion Simulator:
    AC motor, Motion platform, 6DOF
    Hi Everyone,

    This is my first DIY motion simulator project. It is still a work in progress. Materials have been purchased for a modded SFX100 with 150-180mm stroke, Item24 aluminium profile (300mm) instead of kinetik, and reversed longer linear bearings (LMEKL30UU) with longer hollow shaft (380mm). I still have to buy the materials for the surge and yaw/sway platforms. The longer shaft would allow to attach the rig to the actuators in a way that the mouting and turning points on the rig can be higher up, so a roll becomes more of a roll-like and of a less surge-like movement.

    I already have the 3d printer, and placed the order for 7 x 90ST-M02430 motors with AASD-15A drives, a Thanos AMC-AASD15A Servo Controller, 3 x modded GX150 with dust cover and 300mm stroke, and 4 x ball-bearing hinges from Item24 to connect the motors with the platform.

    The surge platform will be just a simple linear rail with sliders, nothing fancy, that's the easy part.

    The difficulty came with implementing the Yaw and Sway elements in the bottom-most platform. I never liked the idea of caster wheels and saw a video on the Thanos discord channel which inspired me to create a design for this. I looked around for CAD software and found Fusion 360 to be looking good and free. It also makes sense before I buy all the hardware, to make sure it is going to work out well at the end. I am very new to CAD software, I only started learning it 4 days ago, but the idea of building this platform helped me get up at night - in a good way :)

    I would really appreciate the input of the veterans here, people who have experience with building motion platforms.

    I have a hard time figuring out the joint placements and rod lengths for the connection between the linear table and the platform. Are there any guidelines or formulas to make their movement as optimal as possible?

    I am also still trying to figure out a clean and precise solution to connect the surge element shafts with the SC linear bearings that move along the sway shafts. Maybe I should just 3d print or CNC (outsource) a plate that fits exactly.

    Cheers,
    David

    YawSwayPlatform.png





    • Like Like x 5
    • Funny Funny x 1
  2. Ads Master

    Ads Master

    Balance:
    Coins
    Ratings:
    +0 / 0 / -0
  3. d4vid

    d4vid New Member

    Joined:
    May 16, 2021
    Messages:
    9
    Balance:
    88Coins
    Ratings:
    +25 / 0 / -0
    My Motion Simulator:
    AC motor, Motion platform, 6DOF
    credit goes to @fredbalcou at Thanos discord for the inspiration on the wheel-less design. Here is his video:
    • Winner Winner x 2
    • Like Like x 1
  4. BALCOU

    BALCOU New Member

    Joined:
    May 17, 2021
    Messages:
    1
    Balance:
    25Coins
    Ratings:
    +0 / 0 / -0
    My Motion Simulator:
    6DOF
    Nice modeling, so that the link does not break your head, directly connected the bearing to the actuator table, no need to connect the upper part to the lower part.

    Attached Files:

    Last edited by a moderator: May 17, 2021
  5. Sebj

    Sebj Active Member

    Joined:
    Nov 13, 2014
    Messages:
    287
    Location:
    Canada
    Balance:
    1,028Coins
    Ratings:
    +162 / 1 / -0
    My Motion Simulator:
    2DOF
    Nice project. Like to see new ideas. Good luck
    • Like Like x 2
  6. d4vid

    d4vid New Member

    Joined:
    May 16, 2021
    Messages:
    9
    Balance:
    88Coins
    Ratings:
    +25 / 0 / -0
    My Motion Simulator:
    AC motor, Motion platform, 6DOF
    I quite like the idea of fixing the yaw and sway DOFs in the middle. I am starting to figure out the joints, I have adjusted the design a bit here and there, moved the motors further away from the center, designed the shaft holders to be 3d printed, have changed one of the motors to the real GX150. I just need to adjust the length of the GX150 to be double the size, to match the one with 300mm travel and dust cover, and reconnect the bottom joint to the GX150's table. Some parts have arrived, still waiting for the motors and GX150s from China, and parts from Item.
    Linear_Yaw_Sway_Platform_2021-May-21_03-21-56PM-000_CustomizedView15784688677.png
  7. d4vid

    d4vid New Member

    Joined:
    May 16, 2021
    Messages:
    9
    Balance:
    88Coins
    Ratings:
    +25 / 0 / -0
    My Motion Simulator:
    AC motor, Motion platform, 6DOF
    EDIT: *motors -> linear tables. I just realised, I will certaily need some kind of clamping mechanism and may just go with drilling the holes out on the SC sliders for the SHF30 just as you did. The 3d printed parts may not hold the shafts strong enough.
  8. carlos matheus oliveira

    carlos matheus oliveira New Member

    Joined:
    Jan 14, 2018
    Messages:
    1
    Location:
    Brazil
    Balance:
    139Coins
    Ratings:
    +1 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor
    Congrats, very impressive project... Well done.
    • Like Like x 1
  9. d4vid

    d4vid New Member

    Joined:
    May 16, 2021
    Messages:
    9
    Balance:
    88Coins
    Ratings:
    +25 / 0 / -0
    My Motion Simulator:
    AC motor, Motion platform, 6DOF
    Thank you.
    Here are some updates:

    Linear_Yaw_Sway_Platform_2021-Jun-29_12-36-41AM-000_CustomizedView10831490194.png Item_Slider_Push-Pull.png aasd-rack-sq.png compact-6dof-platform-4k-joints-moved2-sq.png compact-6dof-platform-4k-joints-moved-sq.png compact-6dof-platform-4k-bottom-sq.png compact-6dof-platform-4k-no-p1x-sq.png compact-6dof-platform-4k-sq.png
    • Like Like x 2
    • Friendly Friendly x 1
  10. Sebj

    Sebj Active Member

    Joined:
    Nov 13, 2014
    Messages:
    287
    Location:
    Canada
    Balance:
    1,028Coins
    Ratings:
    +162 / 1 / -0
    My Motion Simulator:
    2DOF
    Love this engineering design. My next rig.

    Can you post your design specs so others can print/purchase parts as well?
    • Like Like x 1
  11. accelero

    accelero New Member

    Joined:
    Jun 30, 2015
    Messages:
    29
    Location:
    france
    Balance:
    135Coins
    Ratings:
    +9 / 0 / -0
    My Motion Simulator:
    2DOF, AC motor, Arduino
    Wow looking forward observing the animal in motion:)
    • Like Like x 1
  12. d4vid

    d4vid New Member

    Joined:
    May 16, 2021
    Messages:
    9
    Balance:
    88Coins
    Ratings:
    +25 / 0 / -0
    My Motion Simulator:
    AC motor, Motion platform, 6DOF
    Thank you! It is great to hear that :) I will be open sourcing the design, I am getting everything together now, finalizing the parts list. When are you planning to build it?
  13. d4vid

    d4vid New Member

    Joined:
    May 16, 2021
    Messages:
    9
    Balance:
    88Coins
    Ratings:
    +25 / 0 / -0
    My Motion Simulator:
    AC motor, Motion platform, 6DOF
    Testing DoubleTL full stroke with the Thanos controller:
    4 actuators + DoubleTL with SRS and DR2.0:
    • Like Like x 4
    • Winner Winner x 3
    • Agree Agree x 1
  14. hideki

    hideki Member

    Joined:
    Feb 3, 2014
    Messages:
    159
    Location:
    Spain
    Balance:
    64Coins
    Ratings:
    +47 / 1 / -0
    My Motion Simulator:
    2DOF, SCN5
    First Motion Simulator? New in CAD design? Man, you are good...
    That rig is incredible! Congrats
    • Friendly Friendly x 1
  15. d4vid

    d4vid New Member

    Joined:
    May 16, 2021
    Messages:
    9
    Balance:
    88Coins
    Ratings:
    +25 / 0 / -0
    My Motion Simulator:
    AC motor, Motion platform, 6DOF
    Thank you. I never thought what a PC build and simulators in general will drag me into :D Lots of new things learned... It feels so liberating to be able to design something in 3d then manufacture it (CNC or 3D print) and to build physical stuff after so much abstract software coding...
    • Like Like x 1
  16. Motion4Sim

    Motion4Sim Member

    Joined:
    Jun 13, 2020
    Messages:
    55
    Location:
    Europe
    Balance:
    504Coins
    Ratings:
    +87 / 1 / -0
    My Motion Simulator:
    Arduino, Motion platform, 6DOF
    Hi, very interesting design. great work. please let us know how the linear guides behave during operation with a load. thank you for sharing. unbelievably great.
    • Friendly Friendly x 1
  17. hideki

    hideki Member

    Joined:
    Feb 3, 2014
    Messages:
    159
    Location:
    Spain
    Balance:
    64Coins
    Ratings:
    +47 / 1 / -0
    My Motion Simulator:
    2DOF, SCN5
    Well, If building feels good Driving it is paradise. What a clever and pretty design David
    • Friendly Friendly x 1
  18. d4vid

    d4vid New Member

    Joined:
    May 16, 2021
    Messages:
    9
    Balance:
    88Coins
    Ratings:
    +25 / 0 / -0
    My Motion Simulator:
    AC motor, Motion platform, 6DOF
    • Winner Winner x 2
    • Like Like x 1
    • Useful Useful x 1
  19. Quang Thuy

    Quang Thuy New Member

    Joined:
    Nov 30, 2021
    Messages:
    14
    Balance:
    97Coins
    Ratings:
    +2 / 0 / -0
    My Motion Simulator:
    2DOF
    First motion simulation project, but you did it professionally. Thank you for sharing, hope to do the same as you in the future.
  20. hideki

    hideki Member

    Joined:
    Feb 3, 2014
    Messages:
    159
    Location:
    Spain
    Balance:
    64Coins
    Ratings:
    +47 / 1 / -0
    My Motion Simulator:
    2DOF, SCN5
  21. nmk

    nmk New Member

    Joined:
    Jun 22, 2022
    Messages:
    12
    Balance:
    71Coins
    Ratings:
    +5 / 0 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, SimAxe, Arduino, Motion platform
    well thought out congratulations on the project.
    Last edited by a moderator: Jul 19, 2022