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C-Beam - Sphinx 1000x1000mm inspired by Kyo

Discussion in 'CNC Mills/Routers' started by spark2, Feb 23, 2018.

  1. spark2

    spark2 Well-Known
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    spark2 published a new build:

    Read more about this build...
     
  2. Mouldy

    Mouldy Journeyman
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    That looks good. I'm hoping to do a simplar thing with my CBeam XL.. I have bought two 1000mm Cbeams and screws but guess I need wider Y plates like those you have used.
    I dont think the existing xlarge Cbeam plates currently under the XL bed are wide enough to make a stable virtical support for the X axis pillars.
    I have downloaded the sketches into Fusion360 but what depth are the holes for the Screw bearings and the eccentrics? Are the bearings sunk in to the width of the bearing?
    I assume the eccentrics are just slightly deaper than the eccentric "step"? Are there published dimensions for these?

    I then need to pluck up courage to use my Cbeam XL to actually cut the plates :-O I have only cut wood up to now..

    Thanks in advance
    Cliff
     
  3. spark2

    spark2 Well-Known
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    Hi, so you downloaded the Fusion360 Files from Kyo's Site right? I dont know if these Files have all informations (because i dont work with Fusion360). I used the DXF and STL Files. There u can see all the Dimensions, because these Files are 3D. Which Dimensions do you exactly need? Here is a Picture of the Y-Plates.
    Upper Pic is the Y-Plate (Side) and the lower Pic is the Y-Plate for Motor.
    U can also see that the Holes for the Eccentric is little bit bigger than the normal screwhole. You need that Dimensions?
     

    Attached Files:

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  4. Mouldy

    Mouldy Journeyman
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    Ah ok well for some reason they imported just as flat sketches. I’ll try another method later as I think I used wrong method with no conversion. I was just after the hole depths around the lead screw bearings
     
  5. Mouldy

    Mouldy Journeyman
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    Odd - Even if I try upload into the Assets tab - which should do necessary conversions, the dxf and the skp files all come out with no bodies. The dxf files just give me sketches. The skp files lokk flat but "odd". I've imported other openbuilds before... will look up the forums... Thanks anyway
     
  6. Kyo

    Kyo Master
    Staff Member Resident Builder Builder

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    That is correct, the DXF files are 2d files not 3d bodies. Most shops want basic dxf files when cutting plates. Just provide them the dxf's and the bearings you are using. For those who want to make their own, pocket depth can be found by either reviewing the plates within the complete Sketchup model , STL files or Fusion360 file. No need to import anything. I used Fusion360 as my cad for the plate set and provided the Fusion files on the "files and drawings" tab of my build "Here"

    Eccentric Holes: 7.2mm
    M5 Bolt Head Counter Bore Depth: 1.6mm
    Bearing Pocket Through Hole: 11mm
    Bearing Pocket Major Diameter: 16.1mm
    Bearing Pocket Major Depth: 5mm
    Bearing Pocket Flange Diameter: 18.1mm
    Bearing Pocket Flange Depth: 1.1mm

    As I was designing the plate set I thought a lot about how they could be made and with what tools folks from around the world may have. So while the above may hold true for Machining or 3d printing. When using the called for bearing and plasma , laser or water jet cutting the plates the bearing pocket can be simplified to just a 16.1mm though hole and the M5 counter bores added after the fact with this tool "Here" .
     
    #6 Kyo, Feb 24, 2018
    Last edited: Feb 24, 2018
    spark2 and Mouldy like this.
  7. spark2

    spark2 Well-Known
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    Yep sorry my fault. The DXF is 2D. I used the SLT Files. Thx Kyo for the Informations.
     
  8. Mouldy

    Mouldy Journeyman
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    Ok well I thought I'd try a test cut in alluminium as so far, I have only cutr wood with my CBeam XL
    Sadly a test cut at 800mm/min with a 6mm 4 flute cutter at DOC .1mm waved around alot. I think there is too much flex in my machine for ally. I've had a few issues with the wheels being a bit slack epecially on the z axis even when fully adjusted in.
    Admittedly I have raise the vertical beams by 50mm so that wont help.
    I'll perhap give it one more go at 400mm/min but otherwise would have to buy plates from US as I dont think they are avaiable in UK
    I'm wondering if I could instead use my existing Cbeam arge plates (3 [airs of wheels per side) offset so they overlap on the inner two pairs of wheels and the outer two are staggered on each side. This would give me a wider track.
     
  9. JeromeL

    JeromeL New
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    Hi @spark2

    I saw you use the taller plate for your build.

    What is the length of your cbeam you used for the z axis ?

    Thanks !
     
  10. spark2

    spark2 Well-Known
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    Hi JeromeL,

    Yes that is correct. I use the taller Plates. I use the 250mm C-Beam for the Z-Axis. Maybe i need to move the whole Z-Axis C-Beam little bit down.
    I don't know if the 500 mm would be better. But for me it will work because i want also carve some thick Pieces of Wood.
     
  11. James_Hopkins

    James_Hopkins Well-Known
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    How does your machine cut aluminum with the x-axis being 1000 mm?
    Is there alot more flex or does it still cut good?
     

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