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Sphinx XL

Discussion in 'CNC Mills/Routers' started by beardyblair, Nov 18, 2016.

  1. GrayUK

    GrayUK Openbuilds Team Elder
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    beardyblair.
    Excellent piece on your "Upgrade 1: Spindle". :thumbsup:
    However, I am very concerned that this important and detailed information is going to be lost, like so many in the past, in the darkness of distant threads. :cry:
    Can I suggest you make a copy of that Post and put it in the "Tips and Guides" area, as a future source of information. :)
    Gray
     
  2. beardyblair

    beardyblair Veteran
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    I will happily do this. Let me rewrite it as a "how to". Got a few more coming up as I am setting it up for pwm control and I know that this is also something people struggle with.
     
    GrayUK and Kyo like this.
  3. Chris Brinton

    Chris Brinton Well-Known
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    Apologies, I cant for the life of me figure out how to export 3D files from the free version of sketchup into Fusion360. I can only export .dae and .kmz as 3D and fusion 360 can load .igs, .iges, .sat, .smt, .stp, .step and .f3d

    I may be missing something very straight forward, but Im not seeing it.

    BTW, love the build and Im starting my own now. How do you like the new 2.2kw spindle ?
     
    James_Hopkins likes this.
  4. Mark Carew

    Mark Carew OpenBuilds Team
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  5. Chris Brinton

    Chris Brinton Well-Known
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    Thanks Mark. Unfortunately you cant generate CAM off of Mesh objects yet in Fusion 360. I could have projected the plates onto a new sketch but that would have only been an approximation. Instead, I duplicated the mods for the v2 50mm taller side plates to the existing v1 .f3d files. That will allow me to generate the CAM. Ive attached the file if its useful to anyone else.
     

    Attached Files:

  6. rlrhett

    rlrhett New
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    Just to be clear, it is the same BOM and same build steps as the original "Sphinx", just with larger extrusions and lead screws (and the taller plates). I think I will be ordering the parts from Openbiulds Store, and I want to make sure I've got the whole BOM to order from.

    Thanks!
     
  7. Chris Brinton

    Chris Brinton Well-Known
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    That is what I understand, and how Im doing my build.
     
  8. rlrhett

    rlrhett New
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    Thanks! Just wanted to be sure.
     
  9. Andreas Bockert

    Andreas Bockert Veteran
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    You might want to add some additional supports along the bottom and not only rely on the wasteboard for support. You'll need to adjust your angle brackets and whatnots accordingly.
     
  10. blue25

    blue25 Well-Known
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    hi, what controller do you use?
     
  11. Angus Shippey

    Angus Shippey Well-Known
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    Just checking , did you use 2 x anti backlash nuts per Y axis?
    I'm about to add Y plates from Chris as my first set did not work nicely.
     
  12. ChadRat6458

    ChadRat6458 Journeyman
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    2 anti backlash nuts will make it too tight. Either one anti backlash nut or 2 regular ones. I learned the hard way.
     
  13. Nels

    Nels Journeyman
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    I went with the single anti backlash also.
     
  14. Angus Shippey

    Angus Shippey Well-Known
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    Thanks guys, I will use one then.
     
  15. Chillimonster

    Chillimonster Veteran
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    What is the maximum travel on this build - Did you achieve the required 800 x 800mm?
     
  16. JeromeL

    JeromeL New
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    @beardyblair

    Nice build, I'm looking to build the same.

    What kind of tolerance you can achieve with this machine?

    Thanks !
     
  17. beardyblair

    beardyblair Veteran
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    Aproximately 840mm on the X and 860mm on the Y with the current spindle and gantry setup. This may change.


    With the new spindle I am experiencing better tollerances as I had movement in the spindle itself previously. I am able to etch PCB's with the current setup using a 0.05mm mill.
    The new geared Z will also improve resolution and will improve this axis also. Due to the size and weight of the machine and the materials used I can actually notice very small movements (0.10mm) during calibration just by leaning on the desk. We found this out when leaning in to view a PCB being cut. Because of this we strengthened the desk, reduced its size and will be adding a cast bed as the next addition.
     
  18. beardyblair

    beardyblair Veteran
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    I did and due to a lot of precision setup have had no problem.

    I tried with a single backlash nut but did notice a difference. I may try this with the next build.
     
  19. Chillimonster

    Chillimonster Veteran
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    Excellent new.

    And this is still on a 1000 x 1000.

    That’s will suit me perfectly as I need 800 x 800 or just over.
     
  20. beardyblair

    beardyblair Veteran
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    Yes, I went with these dimentions as I build this machine to cut 820 x 820 carbon sheet.
     
  21. JeromeL

    JeromeL New
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    Hi @beardyblair ,

    Thanks for the information on the tolerance. I want to buy my extrusion to have the same size of your machine and
    can you confirm me the size of the extrusion you use for your machine ?
    It's the correct dimension ?

    Vslot & CBEAM
    • Qty 5 20x60 V-slot 880mm base/frame
    • Qty 2 20x60 V-slot 996mm base/frame
    • Qty 3 C-beam 1000mm X, Y axis
    • Qty 1 C-beam 310mm Z axis (this could possibly be shorter, have not finalised this yet)

    And the lead screws:
    • Qty 3 1040mm - this is the full size no cutting needed
    • Qty 1 355mm

    Thanks !
     
  22. Sprags

    Sprags Veteran
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    So buffing the 15mm screws removed scratches enough to shorten them to 12mm? Or did you buff 3mm of material off of them to to get them down to 12mm? I'd suggest grinding rather than buffing. Grinding is a lot more aggressive and its a far fast way way of removing that much material. If you want to buff scratches out of them after grinding that much material that is probably OK too.
     
  23. Chillimonster

    Chillimonster Veteran
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    Just got a few more bits to order in:

    C-Beam when Ooznest get it in stock this week
    Spindle - when i decide what i'm going for - going to air cooled, but undecided between Kress / Makita RT0700CX4 / Chinese 0.8kw
    Steppers - Still looking for best value

    But a question for you if I can....

    Just about to start on the bench - whats the overall dimensions with steppers etc so i dont go too small or too big on the bench?
     
  24. Spiceworld

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    Hi

    Does anyone know what size aluminium plate I would need to be able to have the 2" taller plates cut locally in the UK.

    Thanks in advance

    Richard
     
  25. Giarc

    Giarc Master
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  26. mikework

    mikework Well-Known
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    Greetings!

    How did the addition of the 2.2KW Spindle go? Any nod or other needed adjustments?

    I am about to add the same size spindle to my build with a similar size of c-beam and wondered whether I should beef it up somehow.

    -Mike.
     

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