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New Custom CNC

Discussion in 'CNC Mills/Routers' started by Goran crno, Apr 20, 2016.

  1. Goran crno

    Goran crno Well-Known
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    Goran crno published a new build:

    Read more about this build...
     
  2. andersonb

    andersonb New
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    Looks pretty good! Could you please provide a BOM for your custom build?
     
  3. dakman

    dakman Well-Known
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    You must have read my mind.... I too would like to build a 1500mm square unit. Would it be possible to get the drawings for your plates?
    I would do a few mods to the overall height but leverage what you've done thus far..... any assistance would be greatly appreciated!
     
  4. dakman

    dakman Well-Known
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    Where did you find 40x80 v-material used in your Y-axis, it's not on the openbuilds list of rail material?
     
  5. Goran crno

    Goran crno Well-Known
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    HI there
    Thank you all for the responds.
    I will share the Gantry Plates drawing soon...still working on it.
    The Y-axis are are 40x20mm rails.
     
  6. Goran crno

    Goran crno Well-Known
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    Hi andersonb
    sorry...what is BOM....
     
  7. dakman

    dakman Well-Known
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    in your V-build _2 image, It looks like 40x80 stock running in the Y-axis..... yet yo say it's 40x20.... I'm old and confused now....
     
  8. GrayUK

    GrayUK Master
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    BOM = Bill of Materials
    I think you might well need to beef up your X axis.
     
  9. dakman

    dakman Well-Known
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    with 4 bolt holes, I would think it is 80mm in the vertical.
     
  10. Goran crno

    Goran crno Well-Known
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    Hi
    Oh sorry my bad.
    The Y-axis is a C-beam rail
     
  11. dakman

    dakman Well-Known
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    40x80 sure would handle the load much better
     
  12. gecko2308

    gecko2308 New
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    Hi, did you release the drawing for the plate ? Realy interesting ! I'm planning to build a 1500x1500 cnc with c-beam... And your plate drawing could be helpfull for me ! Thanks and realy nice design !
     
  13. Metalguru

    Metalguru Master
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    Wow! This thing looks like the landing gear for an Antonov...:confused:

    dakman , that 40 x 80 material is called C-Beam. Look for it in the store.

    Goran crno Hope you have lots of cash for those 80+ v wheels.;)

    If you don't mind a bit of constructive criticism, I have some thoughts:

    It seems kind of odd that you have 24 wheels on each Y axis, and 24 on the Z axis, but only 10 on the X? Although, if you are just cutting foam, you may not need the strength. You could probably get away with just using every other set of wheels and still be plenty strong.

    Also, I might suggest that you beef up the bed somewhat. 20x40's are a bit light for supporting a bed that is 1.5mx 1.5m. You may end up with a bed that sags in the center. I would go to at least 20x60's and add a couple more cross pieces. A Torsion Box would be an ideal bed for this machine.

    Same on your X axis cross braces. I would go with at least 40x40's on the cross braces on the carriage top, and add at least one more brace about halfway down your tall gantry plates. You are going to have huge side-side flex with those tall plates and no cross bracing. Perhaps a pair of 20x80's or even another c-beam. With a frame that large, though, you really have to be aware of flex and resonances.

    And, I hope the plates you have shown in red are not really going to be made of acrylic as they appear to be. For a machine this size, aluminum is a must.

    But that's just my opinion.
     
    GrayUK likes this.
  14. Goran crno

    Goran crno Well-Known
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    Hello Metalguru
    Thank you for your comment.
    I will consider your all your suggestions.
    The Ganty Plates will be from aluminum.

    thanks allot
    Goran
     
  15. Metalguru

    Metalguru Master
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    Hi Goran:

    Good luck with your build!
     

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