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1075 Sphinx

Discussion in 'CNC Mills/Routers' started by NeeqOne, Jun 22, 2018.

1075 Sphinx

1075 Sphinx

Discussion in 'CNC Mills/Routers' started by NeeqOne, Jun 22, 2018.

My first attempt at building a CNC. I chose the Sphinx due to ease of build and extensive documentation provided by Kyo.

1000mm x 750mm C-beam Sphinx CNC. 1075
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  1. NeeqOne

    NeeqOne Well-Known
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    NeeqOne published a new build:

    Read more about this build...
     
    #1 NeeqOne, Jun 22, 2018
  2. NeeqOne

    NeeqOne Well-Known
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    As you can see from the build picture, there are cables everywhere. I want to get the machine running and use it to mill parts for my enclosure. Moreover, I want to sleeve all the cables with the exception of the one for the spindle.
     
    #2 NeeqOne, Jun 22, 2018
  3. James_Hopkins

    James_Hopkins New
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    I can't wait to see a video on it running. I wanna see how the belt drive X axis works.
     
    #3 James_Hopkins, Jun 22, 2018
  4. NeeqOne

    NeeqOne Well-Known
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    I just sent G91 G0 X30 and G91 G0 Y30 and measured the distance travel in both direction and they were 30mm. I need to find a way to calibrate the z-axis.
     
    #4 NeeqOne, Jun 23, 2018
  5. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    It can easily be calibrated using a dial indicator or a set of calipers or even using a ruler set vertically against the face but if you're using the same screw on the z-axis as the others, it will have the same input value as the others.
     
    #5 Rick 2.0, Jun 24, 2018
  6. NeeqOne

    NeeqOne Well-Known
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    First engraving test went well. Initially, the text was inverted. I had to change $3 in the configuration to fix it. I will play with the maker a couple of time before jumping to using bits.

    20180628_222151.jpg
     
    #6 NeeqOne, Jun 28, 2018
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  7. NeeqOne

    NeeqOne Well-Known
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    I sleeved all the cables with the exception of the one for the spindle.

    20180701_174431.jpg

    20180701_174510.jpg
     
    #7 NeeqOne, Jul 1, 2018
  8. NeeqOne

    NeeqOne Well-Known
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    I have been able to get grbl to turn my spindle on and off. However, the spindle runs at the maximum rpm. Issuing the command S8000 has no effect on the speed at all. I will be glad if I can get some assistance to in setting up grbl to control the speed of the spindle. I am using bCNC. Moreover, I have attached the wiring diagram from my controller board (Phoenix) to the VFD below.

    VFD Wiring.png
     
    #8 NeeqOne, Jul 2, 2018
  9. NeeqOne

    NeeqOne Well-Known
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    I connected a 1K remote potentiometer, with the VFD 10v to one leg of the pot, VI to the Wiper Center leg and other leg to ACM. I was able to control the speed using the potentiometer with PD001 = 1 and PD002 = 1.

    However, once I hook up the VI and ACM to the phoenix CNC controller board, I am unable to control the spindle speed. It seems the VFD is not the problem. The problem might be the CNC controller or grbl settings. I will be glad if anyone can help with fix this issue.
     
    #9 NeeqOne, Jul 10, 2018
  10. NeeqOne

    NeeqOne Well-Known
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    Preparing to install T-tracks.

    20180713_195836.jpg
     
    #10 NeeqOne, Jul 13, 2018
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  11. Michael.M

    Michael.M Veteran
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    Awesome wasteboard! I attempted to do the same thing but I damaged my t-tracks when trying to enlarge the screw holes. Mine were drilled for some strange size countersink screws that I didn't have.
     
    #11 Michael.M, Sep 30, 2018
  12. Michael.M

    Michael.M Veteran
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    I'm still trying to figure out a near perfect solution to work holding. Actually, if I would have done research begore I bought my cast tooling plate, I would have bought a cast aluminum t-slot plate. I see them on eBay but they're really spendy.
     
    #12 Michael.M, Sep 30, 2018
  13. Giarc

    Giarc OpenBuilds Team
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    I just did something similar. I put 8 48 inch t tracks 2.75 inches apart on my work surface. I too have been trying to come up with the "perfect" clamping solution. This should help.
     
    #13 Giarc, Sep 30, 2018
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  14. NeeqOne

    NeeqOne Well-Known
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    20180930_200156.jpg

    This is the current state of my CNC. I am using a spring loaded pen to test and calibrate the machine. Also, I am using ESTLCAM with an Arduino Uno since the spindle control does not work on the phoenix controller.
     
    #14 NeeqOne, Sep 30, 2018
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  15. Michael.M

    Michael.M Veteran
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    I remember you saying something about your Phoenix controller having issues. Do you like the arduino? Your test looks good dude! I bet you could test cut something. You should try cutting HDPE cutting boards with a single flute cutter. Literally zero effort for the machine.
     
    #15 Michael.M, Sep 30, 2018
  16. Michael.M

    Michael.M Veteran
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    Plus plastic tends to make little curly chips that are easy to clean.
     
    #16 Michael.M, Sep 30, 2018
  17. Michael.M

    Michael.M Veteran
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    Did you calibrate your steps per mm? Like tell the machine to move X axis so far and measure actual moved distance?
     
    #17 Michael.M, Sep 30, 2018
  18. NeeqOne

    NeeqOne Well-Known
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    I have done that. But, I will do it once again. I bought a digital indicator to help with calibrate the whole CNC. I am putting together a dust collection system. These the items I am using.
    1. High Efficiency Dust Separator, 12 in. dia, with 2.5 in hose, 36 in. long
    2. 5 gal. Homer Bucket
    3. 12 Gal. 5.0-Peak HP Wet/Dry Vac with Tumbler
    4. Dust Shoe
    I have a shop vac but it is not as powerful as the one listed above. I hope to sell it and use the funds to purchase the 12 gal one.

    IMG-20180926-WA0003.jpeg

    The above is another drawing. Once I get the dust collection system in place, I will do some test cuts.
     
    #18 NeeqOne, Sep 30, 2018
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  19. NeeqOne

    NeeqOne Well-Known
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    I decided to re-calibrate my X and Y axes and also optimize my ESTLCAM settings. Machine was able to draw this Mickey Mouse with no issue.

    20181005_182011.jpg


    [​IMG] 20181005_183401_1.gif
     
    #19 NeeqOne, Oct 5, 2018
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  20. Michael.M

    Michael.M Veteran
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    That's pretty cool dude. I've never done anything like that but have wanted to try it. I think I've seen people use spring loaded pen holder devices for whatever reason although you seem to be doing fine with it chucked up.
     
    #20 Michael.M, Oct 6, 2018
  21. NeeqOne

    NeeqOne Well-Known
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    my pen is spring loaded.
     
    #21 NeeqOne, Oct 6, 2018
  22. Michael.M

    Michael.M Veteran
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    Oh nice
     
    #22 Michael.M, Oct 6, 2018
  23. Giarc

    Giarc OpenBuilds Team
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    Is it a purchased pen holder, or a 3D print with files available. Recently, I have been using one I printed from this this file, but it is not the best for drawing small circles. It is this one:[​IMG]
     
    #23 Giarc, Oct 6, 2018
  24. Michael.M

    Michael.M Veteran
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    Oh ok. It truly looks like a short pen chucked directly in the collet from your GIF you uploaded.
     
    #24 Michael.M, Oct 6, 2018
  25. NeeqOne

    NeeqOne Well-Known
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    I just cut a ballpoint pen into two and put the spring from the tip at the end.
     
    #25 NeeqOne, Oct 6, 2018
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  26. Giarc

    Giarc OpenBuilds Team
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    That is way to easy and brilliant. My problem is I stumble across things on thingiverse I really didn't know I needed until I saw one. That was how I ended up with an overly complicated pen mount. :thumbsup:
     
    #26 Giarc, Oct 6, 2018
  27. NeeqOne

    NeeqOne Well-Known
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    20181006_212508.jpg

    This is my simple solution. Once I get a 3d printer, I will go with a different solution. This has helped me to calibrate the feedrate and accelerate in ESTLCAM. My machine was skipping some steps during some drawing.
     
    #27 NeeqOne, Oct 6, 2018
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  28. NeeqOne

    NeeqOne Well-Known
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    I just finished my first mill on my CNC. In as much as everything went smooth, there is a slight issue with the part I milled.

    20181025_193959.jpg

    As indicated in the picture, the part marked is not vertically straight as the other parts. What could be the cause of this? The machine bed is not level yet. Could this be the issue? Thanks.
     
    #28 NeeqOne, Oct 26, 2018
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  29. NeeqOne

    NeeqOne Well-Known
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    I try surfacing a piece of MDF to test a new bit I bought. It seems some layers are slightly higher than others after surfacing. Any clue what the issue might be? Thanks

    20181101_134028.jpg
     
    #29 NeeqOne, Nov 1, 2018
  30. GrayUK

    GrayUK Openbuilds Team Elder
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    I think, looking at your picture, you're going to need to do some "Tramming". i.e. Either your spindle, your X-axis, your Z-axis, or all three, are not square to the bed. You need to get out your best and most accurate squares and have a check.
     
    #30 GrayUK, Nov 1, 2018
    CNCMD and NeeqOne like this.
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