cnc machine build 1.2x1.2m

Discussion in 'Hobby Engineering' started by Ch4iS, Feb 1, 2015.

  1. Ch4iS

    Ch4iS Member

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    Another toy in the making.

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    Thanks for looking :)
     
  2. mad_mic3

    mad_mic3 Member

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    Looks nice & sturdy:thumbup:
     
  3. dazza00

    dazza00 Member

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    Looks great.

    Is the 1200mm X 1200mm the cut area ?
    Are you working to a plan or custom build.
    Have you got a estimate on final cost.

    Trying to weigh up cost/time vs cheap China job.
     
  4. OP
    OP
    Ch4iS

    Ch4iS Member

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    Thanks mad mic

    Dazza, it'll have a cutting area a bit over 1200x1200, custom build drawn in sketch-up as I go, don't mind sharing if anyone wants it.

    No total price worked out, but so far I'm $950 deep.
     
  5. mad_mic3

    mad_mic3 Member

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    Hey Ch4is, i wouldnt mind a copy once its built, might build something at a latter date:thumbup:
     
  6. OP
    OP
    Ch4iS

    Ch4iS Member

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    Last edited: Mar 12, 2015
  7. OP
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    Ch4iS

    Ch4iS Member

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    Last edited: Mar 12, 2015
  8. OP
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    Ch4iS

    Ch4iS Member

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    Last edited: Mar 12, 2015
  9. OP
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    Ch4iS

    Ch4iS Member

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  10. ShadowBurger

    ShadowBurger Member

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    lookin good! machine porn :leet:
     
  11. OP
    OP
    Ch4iS

    Ch4iS Member

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  12. ShadowBurger

    ShadowBurger Member

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    lol love the prototyping bolts...

    what are you driving the steppers with? they look pretty hefty.
     
  13. OP
    OP
    Ch4iS

    Ch4iS Member

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    Maybe some geckodrivers, not 100% sure I really wanted to keep the build cost under $2000 so might give some of these TB6600's a go and see how they run.

    http://www.hotmcu.com/tb6600-1-axis...ver-board-for-cnc-router-p-56.html?cPath=7_30

    The steppers are 387 oz-in 3.5A nema 24 stepper motors, a bit on the small size for a machine this big but I'm trying to keep costs down where possible.
     
  14. pippin88

    pippin88 Member

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    I'm loving Leadshine digital drivers. DM556 or 856 can be had on aliexpress for less than USD60 a driver, shipped.
     
  15. OP
    OP
    Ch4iS

    Ch4iS Member

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    Decided to go with some geckos again, I'd probably regret it with the budget drivers, I did look at the leadshine drivers and they do look good but just having used the geckos previously I just can't fault them.



    Not much to show but tons of holes drilled and tapped, just waiting on some more T-slot nuts to put the Y axis slide together.


    Click to view full size!



    Click to view full size!
     
  16. OP
    OP
    Ch4iS

    Ch4iS Member

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    Machined more bar stock to attach the X axis rack, was planning to use some extrusion but the bar stock worked pretty good on the Y axis.

    Click to view full size!


    Cut the X axis end plate and pinion pulley reduction swivel motor plate:confused:

    Click to view full size!


    Click to view full size!


    Will look something like this

    Click to view full size!


    Having never built a rack and pinion setup I've got no idea if I have enough force holding the pinion to the rack, but I very roughly worked out about 20-25kg upward force with dual springs more if I drill more holes or get some thicker wire springs, but the 2mm+ springs seem overkill.
     
  17. OP
    OP
    Ch4iS

    Ch4iS Member

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  18. mad_mic3

    mad_mic3 Member

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    looking sweet as:thumbup:
     
  19. OP
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    Ch4iS

    Ch4iS Member

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    Last edited: May 31, 2015
  20. mad_mic3

    mad_mic3 Member

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    Looking sweet as, thats a whole lotta love gone into so far:thumbup::)
     

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