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KYO SPHINX a la' SCYBUCK

Discussion in 'CNC Mills/Routers' started by SCYBUCK, Oct 16, 2018.

  1. SCYBUCK

    SCYBUCK Journeyman
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    SCYBUCK published a new build:

    Read more about this build...
     
  2. GrayUK

    GrayUK Openbuilds Team Elder
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    Sounds like a great machine. :D
    Would really like to see some pictures or even a video would be better :thumbsup:
     
  3. Andreas Bockert

    Andreas Bockert Veteran
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    Looks like a well built machine!

    hadn't heard of the Acorn. What made you choose Acorn over GRBL/CNC-shield?
     
  4. GeoffH

    GeoffH Journeyman
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    Looks strong! My only concern from the image is the MDF (I guess) machine bed, although it looks substantial having doubled the thickness, I believe that you will need coolant to cut aluminium which I imagine will cause problems with MDF. I have built a C-Beam XL which has an MDF bed but I only cut wood with no coolant. Anyway best of luck with your build.
     
  5. SCYBUCK

    SCYBUCK Journeyman
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    Thanks Geoff. I blow air at the carbide end mill and have had no issues with chip welding or clogging. Yes sir. The MDF bed has been an issue. Have had difficulty clamping the piece in place. The MDF is on the way out. A T slot aluminum bed is planned. Do you know of any low profile mill vices that are not too expensive?
     
  6. SCYBUCK

    SCYBUCK Journeyman
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    After watching a Youtube propaganda video about the Acorn and the Centroid operator interface the decision was made. Something about the interface from the Mach 3 to the G540 did not set well with me even though the acorn does utilize a parallel port output. Also did not care to do Arduino programming. I liked the idea that I had single source responsibility for any software/driver issues with Centroid.

    As it turns out, I do like the Centroid CNC-12 operator interface. The variety of Youtube videos that are available really helps. Received excellent warranty service from Centroid regarding utilizing the 4th axis to control the second Y gantry stepper. The set up wizard works great. This web page has an excellent system diagram... Acorn CNC controller, Step and Direction 4 axis CNC Control board with ethernet communication.DIY CNC kit.
     
  7. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    MakerSL MSL-8 OB Vise
     
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  8. GeoffH

    GeoffH Journeyman
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    Sounds a good plan. Not sure about a low profile vice but you will probably know that tightening a vice often results in the part lifting up a bit, so a sharp tap with a lead mallet normally gets the part down. With my XL style machine this is a no-no but with your machine, the bed can be solid enough for that. I use a pair of clamps for my wood projects and have to take care about lifting without giving it a clout.:( With my C-beam XL, after struggling with very limited Z travel for a while I increased the travel by about 4" without any noticable loss of rigidity for my work, Images
     
    #8 GeoffH, Oct 17, 2018
    Last edited: Oct 17, 2018
    GrayUK likes this.
  9. SCYBUCK

    SCYBUCK Journeyman
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    Geoff,
    Looked at your Images. It is obvious that somewhere between you and your router, someone has considerable skill and experience, sir! Good looking stuff! My question for you now, sir, is: What software do you use to do your designs and generate G Code, please?
     
  10. GeoffH

    GeoffH Journeyman
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    I chose the excellent Vectrics software Vectric Ltd - Passionate About CNC, I'm currently with VCarve PRO; it's not free, but in it's class it's a bargain in my opinion. It uses a pixel based algorithm which is fast, reliable and accurate enough for Wood Routing, for the so-called V-carving they have implemented a medial axis method that is also fast and reliable. Highly recommended! I haven't invested in their flagship Aspire software yet that includes more 3D design.
    Depending on what you intend to machine in Aluminium, there may be better choices. My control is XPRO V3 (Arduino with grbl), also very good and I use the free UGS for GCode transfer.
     
  11. SCYBUCK

    SCYBUCK Journeyman
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    Yep! I knew that you were going to say that. Do not ever say that this is a poor man's hobby!

    My current software for mechanical 3D design is Fusion 360. Looking for something for more artsy fartsy designs. Looks like it is staring me in the eyes.

    Thank you. I build my system on the shoulders of giants.
     
    #11 SCYBUCK, Oct 19, 2018
    Last edited: Oct 19, 2018
  12. SCYBUCK

    SCYBUCK Journeyman
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    Rick,

    My mind is racing with ideas that this basic design can do! Thanks for the tip! I build my CNC upon the shoulders of giants!
     
  13. GeoffH

    GeoffH Journeyman
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    Yes you need to spend a bit :eek:, retired now, so spending the kids inheritence. I started with VCarve Desktop that does 90% of what I need. Don't know much about Fusion360 but you are right Vectrics and the now defunct ArtCam (same initial developers) were designed for the arty-farty not-so-much-engineering stuff, which keeps me amused nowadays. That said VCarve is ok for 2d drawing but it's more like Coral Draw than Mechanical design CAD. Bear in mind that Vcarve doesn't create 3d models, it's mostly aimed at manipulating models to fit your part and subsequent 2 & 3d machining operations. You can find 3d stl or greyscale bitmap files on the internet (free or not) that can be imported, manipulated and machined.
     
  14. johnnycnc

    johnnycnc Journeyman
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    I have gone with the Acorn as well, Scybuck. I also have gone with the PRO4848 frame. I have the frame built and am now working to get the motors and drivers in sync with the Acorn. I have no electronics knowledge so am going through the learning curve with that and the Centroid forum is helping.
     
  15. Michael.M

    Michael.M Master
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    This is definitely on my "To Do ASAP" list. (Incredibly long list)
     
  16. Michael.M

    Michael.M Master
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    Hey Scybuck your machine looks like a little power house! What is that clamping system on your wasteboard? I like the 2.2kw spindle. I actually now wish I had gone bigger than 800w. My VFD is 1.5kw so I am wondering if I cpuld just swap the spindle for a 1.5kw version. This is what my .8kw spindle came with so I am not sure if you're supposed to run the next size up VFD with your spindle. Like would I need a 2.2kw VFD for a 1.5kw spindle? I would also like to make the switch to Mach 3 in the near future. I'm currently working on an enclosure for my machine. I do everything from my apartment so it will be such a relief to run the machine without making a huge mess.
     
  17. joe williams

    joe williams Veteran
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    So Michael, is your plan to move away from, I guess, arduino/grbl to Mach 3? What is it about Mach 3 that you like better...just wondered!
     
  18. Michael.M

    Michael.M Master
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    Probably my main motivation at this point is I have a mini Harbor Freight lathe I plan to CNC once the Granite machine is complete. I know there is a version of Mach 3 for lathes and I figured it would just simplify things running the same software across all my (future) mschines. It will be a while before this happens though as making the change will cost some money. I haven't looked in to GRBL for lathes but there's quite a bit of info for Mach 3 Turn.
     
  19. joe williams

    joe williams Veteran
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    Oh, ok...that makes sense! Good luck!
     
  20. SCYBUCK

    SCYBUCK Journeyman
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    I am not a paid advertisement for Centroid. But, their "control machine" is not a candy butt set up at all, IMHO.
     
  21. johnnycnc

    johnnycnc Journeyman
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    Scybuck, are you familiar with the "Beagle Bone"? Apparently the Acorn is mutated from it.
     
  22. SCYBUCK

    SCYBUCK Journeyman
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    Great minds think alike! LOL. While I am running the Acorn line, both of us are thinking similar regarding consistency of "control machines" between the mill and the future lathe. Got my Acorn board and software ready to go for a similar planned CNC Lathe.

    IT is good to hear back from you sir, after the several months that I have not frequented this site. Too busy building the machine that we have previously discussed. Specifically, this machine.

    Yea. I like your aluminum bed. Yours truly pulled the trigger on an aluminum tee slot base today.

    Typically, electrical devices are designed to deliver their rated load (let's not talk about service/duty factors as that brings in unnecessary complicating factors). If the electrical characteristics line up and the rated load of the VFD equals the motor load, then you are in business. No need to derate.

    The clamping system that you see in the picture is from Clamp Set for 3D Carving . My opinion is that they are clever and good looking. They work well under light/medium loads. They are based upon M5 threads. I am working to cut some aluminum clamps that mimic theirs as they temporarily bend under high loads.
     
    #22 SCYBUCK, Oct 22, 2018
    Last edited: Oct 22, 2018
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  23. Michael.M

    Michael.M Master
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    I'm interested to hear more about this aluminum tslot base. Is it extrusion or one of those cast tslot tables?
     
  24. CNCMD

    CNCMD Veteran
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    T-Slot base is what I just converted to. Misumi sells them. Here is how it looks. 20181003_190556.jpg
     
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  25. GrayUK

    GrayUK Openbuilds Team Elder
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    Of course, if you use a cooling spray, you could now tilt up the back and run a piece of guttering along
    the front to catch it all, as well as the wash down. :rolleyes::D
     
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  26. Michael.M

    Michael.M Master
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    I considered an extruded tslot table when I built my Sphinx. I'm not exactly sure what's held me back. Those extrusions look awesome though. I really like the idea of a single extrusion. Thank's for the link.
     
    #26 Michael.M, Oct 31, 2018
    Last edited: Oct 31, 2018
  27. Michael.M

    Michael.M Master
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    That's actually a really interesting site. They have some nice linear motion components.
     
  28. joe williams

    joe williams Veteran
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    That site looks dangerous for my bank account ! Some good looking items!
     
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  29. Anthony Bolgar

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    How does the Z axis do with the weight of the spindle? I am in the process of building my sphinx, and just wonder if it will handle the weight OK.
     
  30. Michael.M

    Michael.M Master
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    Anthony, when I built my Sphinx, I had no problems with the weight but mine was an 800w spindle. I think the 2.2kw is a few pounds heavier. How wide is your X axis?
     

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