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Linear actuator with AC servomotor (beam design)

Discussion in 'Motor actuators and drivers' started by dureiken, Dec 21, 2019.

  1. dureiken

    dureiken Active Member

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    Like that ?

    [​IMG]

    [​IMG]
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  2. PeterW

    PeterW alias Wickie

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    Yes, perfect!! This will help a lot to reduce the risk of damage during testing and emergency shutt off :) Try to give enough travel space into the damper. The forces are huge and the small dampers are not as hard as they seem - my experience
    Wickie
  3. dureiken

    dureiken Active Member

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    Thanks to @thefost and @Peacemaker105, I changed design once again, really love this one, which seems to be strong !

    [​IMG] [​IMG]

    And I will try a new link method with collar (OD of nut is 36 and ID of alu tube is 36)

    [​IMG]

    It makes me win 30mm on stroke VS the previous design (I lost 12mm with DIam40 IGUS bearing)

    Don't hesitate to make advices :)
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  4. dureiken

    dureiken Active Member

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    I went to a local shop and realize that 5mm rod is very ... unstable :p

    So I made a new try with 10mm (tube or rod) and I discouple base and top rods.

    [​IMG]

    I had to go to OD120/ID112 tube for pulleys and belt to be ok.
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  5. dureiken

    dureiken Active Member

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    Hi,

    after a lot of discussions on discord with @Thanos @SilentChill @thefost @MagicMunkyNuts @Peacemaker105 @pmvcda (thanks to them), I choose to go with beam design which seems to me a lot easier to build. And tubular/cylinder design seems to be not very silent as it seems.

    [​IMG] [​IMG]

    Orange parts are PETG, white ones are IGUS filament and the bearing is a IGUS J https://www.igus.ee/product/66.

    And maybe because I already received all the beams :p

    [​IMG]

    Final stroke is 530mm, for 500mm used in rig.
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  6. dureiken

    dureiken Active Member

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  7. dureiken

    dureiken Active Member

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    First actuator finished :

    5b9086b5-65f6-4229-bfcd-31abcce92d26.PNG 20200419_222558.jpg 20200419_222602.jpg 20200419_222610.jpg 20200419_222613.jpg
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  8. dureiken

    dureiken Active Member

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    Hi

    just a little update, I finally built my 6 actuators, seems fine :) need to test them now

    In chrono line, all majors steps :

    20200425_103259.jpg 20200425_104147.jpg 20200425_111124.jpg 20200425_111813.jpg 20200425_113313.jpg 20200425_120117.jpg 20200425_120145.jpg 20200425_154304.jpg 20200425_171843.jpg 20200425_201055.jpg 20200425_201116.jpg

    That's all :)
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  9. Gadget999

    Gadget999 Well-Known Member

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    what is the spec of your motors ?
  10. Sebj

    Sebj Active Member

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    And roughly how much cost per actuator to build?
    Beautiful work
  11. dureiken

    dureiken Active Member

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    thanks

    for the cost, no idea, in this way I can't lie to my wife :p
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  12. Sebj

    Sebj Active Member

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    Was curious vs buying servo motors

    I never tell the wife
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  13. dureiken

    dureiken Active Member

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    New test :



    really smoother when not on main controller page, I stay on menu
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  14. Mehmetbaran187

    Mehmetbaran187 New Member

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    Wow
    Such a clean job you did.

    I was wondering about your motors ? Can you give us some specs please.
    What is the lead screw size ?
    All orange parts are 3D printed right ? Can you please share?

    Thank you.