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Looking for worm gear motors for 6DOF

Discussion in 'Marketspace - Marktplatz' started by Rifly, Sep 1, 2020.

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  1. Rifly

    Rifly Member

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    Hi,
    maybe someone has something to offer, looking for something like this -

    24V 800W DC motor with 1:25 ratio (Updated 14.10.2019)
    https://www.alibaba.com/product-det...809.html?spm=a2700.8443308.0.0.20083e5fUqlcdp


    Want to make something similar to this project, and Idea to have more power than needed, to cover design mistakes pleases me.
    • Like Like x 1
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    Rifly, Sep 1, 2020
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    Just curious, have you considered servo motors and @Thanos driver?
    noorbeast, Sep 2, 2020
    #2
  3. Thanos

    Thanos Building the Future one AC Servo at a time... or 6

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    • Like Like x 1
    Thanos, Sep 2, 2020
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  4. Rifly

    Rifly Member

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    @noorbeast @Thanos
    Got info back on my inquiry for worm motors mentioned above - 180 usd motor +160 shipping, I guess if I get them all it will be equal to servo drives with gearboxes, but I will have to get controllers and supply separately right?

    I will have to get my calc out and start thinking what costs what. Thanks for pointing to servo direction.
    I know how to use search but by any chance, have a build thread you would recoment as simple and budget friendly?
    Rifly, Sep 2, 2020
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  5. Thanos

    Thanos Building the Future one AC Servo at a time... or 6

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    Correct. For the DC motors you will need to also buy drivers (Sabetooth or MM) and power supplies with balancing batteries for each motor etc...

    The AC servomotors come with matching servo drive, that it just needs to be directly wired to 110v or 220v for power. Simple and neat.

    https://www.aliexpress.com/item/32973113245.html

    See such servomotor attached on a small linear actuator. The servo drive then attaches to one of the db25 ports on my controller via a simple straight DB25 cable, no need to custom wire anything!
    2019-05-21T14_59_10.455Z-IMG_20190519_081648 (1).jpg


    There are examples of really small footprint 6dof platforms here in xsimulator forum. But check out the videos of this guy here that explains everything on how you can build such platform with servos:

    https://www.youtube.com/channel/UCxCueff3Tde6i2naPJmcXWg

    And if you don't want to use hard stop for calibration of the rotary actuators, you can even attach inexpensive contactless induction sensors... see this:




    Thanks
    Thanos
    • Winner Winner x 1
    Last edited: Sep 2, 2020
    Thanos, Sep 2, 2020
    #5
  6. Thanos

    Thanos Building the Future one AC Servo at a time... or 6

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    Besides. You don't want to spend all this money on DC motors to get this motion ( not even synchronized)

    Thanos, Sep 2, 2020
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  7. Rifly

    Rifly Member

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    @Thanos
    Im not sure if I can be pushy enough to ask more info about lifting capability of this combo
    lets say I chose recomended motor with 1:50 gearbox

    My weight is 95-100kg, and current 2dof top platform weight about 60kg with wheel and seat.

    P.s since this is becoming build thread I will be making new purpouse one a bit shorter.
    Rifly, Sep 2, 2020
    #7
  8. Thanos

    Thanos Building the Future one AC Servo at a time... or 6

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    My Motion Simulator:
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    Using 2.4Nm servomotor and 50:1 gearbox, according to my calculations you should be able to handle about 70kg on 150mm long arm (which the rods of your 6dof attach on).

    That is 70kg per motor, total 420kg if all actuators work synchronized to lift the load...
    • Informative Informative x 1
    Thanos, Sep 2, 2020
    #8
  9. Rodeo5150

    Rodeo5150 ROOKIE BUT LEARNING FAST Gold Contributor

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    I wanted to use your thanos card but $400 for one card is just not gonna happen. The whole reason for diy is because were not made of money. But awsome work though. I wish I could afford one
    Rodeo5150, Feb 1, 2022
    #9
  10. Rodeo5150

    Rodeo5150 ROOKIE BUT LEARNING FAST Gold Contributor

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    Yes I would need some direction to go that route in order just to know to let some Direction on how they're built also I can't afford no $500 for Thanos card it's just that can't happen I can't spend that kind of money that I dont have on one pcb
    Rodeo5150, Mar 4, 2022
    #10