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Question about the X,Y,Z

Discussion in 'CNC Mills/Routers' started by jltcet, Dec 14, 2023.

  1. jltcet

    jltcet Well-Known
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    When setting up the x,y,z axis where should the X-, Y-, Z- be located far right corner if you looking at the front of the machine if that makes sense.
     
  2. Misterg

    Misterg Veteran
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    X- is spindle / tool far left
    Y- is Spindle / tool at the nearest edge of the work area (so gantry nearest the front for a moving gantry machine or table furthest from the front for moving table machines)
    Z- is spindle / tool down
     
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  3. Alex Chambers

    Alex Chambers Master
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    The back, right, up corner of the machines workspace is ALWAYS the maximum for each axis. Normally with a CNC mill/router that is zero and the co-ordinates become more negative as you move away from that corner.

    Alex.
     
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  4. jltcet

    jltcet Well-Known
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    So my numbers become more positive when I move away from that point far right corner
     
  5. Alex Chambers

    Alex Chambers Master
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    What controller are you using?
    If you jog;
    X+ve should move the tool right
    Y+ve should move the tool back
    X+ve should move the tool up

    If it doesn't do that we have to get that sorted first.

    Alex.
     
  6. jltcet

    jltcet Well-Known
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    Black box when I set it up as said above it goes positively I’ve tried reversing the axis it go’s negative but words the front
     
  7. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Your ENDMILL must follow the Cartesian standard: Cartesian coordinate system - Wikipedia

    To do that, fix any axis that goes the wrong way round, in CONTROL > Grbl Settings tab > $3 Dir Invert > flip the switch for whichever axis is going against the Cartesian Standard. The ARROWS on the Jog buttons are a quick and easy way to know - if you jog Y+ which way does the arrow on the button point? Did your machine move the ENDMILL in that direction? If not, flip the Y axis switch in Grbl Settings > $3. If it did, DONT flip the switch that axis is fine then. Same for Z and X.

    Ignore the numbers on the DRO, they'll make sense when you HOME and SETZERO - for now just make it jog the right way first.

    Once machine complies with standards, then you use $23 to tell the firmware where you installed the switches. And then you load jobs and start zeroing and that sort of thing
     
  8. jltcet

    jltcet Well-Known
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    X+ moves Left
    Z+ moves up
    Y+ moves
    Y+ moves forward towards the me
    All numbers go positive from farm right moving in opposite direction not negative
     
  9. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    So...

     
  10. jltcet

    jltcet Well-Known
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    I though it was to run - numbers after homing or did I misunderstand I’m taken it
     
  11. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Note
    Please reread my reply, think about it. Test it properly and then apply fixes where needed.
     
  12. jltcet

    jltcet Well-Known
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    Ok so I bei got that part figured out, but now when I home all everything seams to go correctly but the Z+ gos up instead of down to home not Z- , but when I probe it goes in the correct direction is this correct should Z home be all the way up
     
  13. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Z SHOULD HOME UP! Up and away from Clamps. Also, cartesian standard Z+ UP and that is correct. Homing "downward" is a terrible idea will cause tonnes of crashes. Move your switch so it homes on the way up
     
  14. jltcet

    jltcet Well-Known
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    Cool thanks I believe it working correctly now
    sorry for the mis spelling typing on a phone can suck
     
  15. jltcet

    jltcet Well-Known
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    Sorry another NOB question after homing you steer everything to zero correct
     
  16. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Yes.
    I think you may have skipped the Hello World :)
     
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  17. jltcet

    jltcet Well-Known
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    Thanks for the reminder on this. I must have watched this video 5 times, but forgot about some of it. Also found out my design a was trying to cut out I setup in the wrong quadrant when I made it in F360. and that was why it was backwards when trying to run the program. Once I figured out this it Thanks again for the help and info. Im sure Ill have more soon enough :D
     
  18. jltcet

    jltcet Well-Known
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    Well Its been awhile sense I postd on my progress. But everything seams to be going well. Ive compleated a couple projects, and currently working on another. Gotm another question. Ive been using Easel for my current project and wondering why its using the far right as the strting point. insted of the closer left if that makes sense. When using Fusion 360 I havent figured out where to place the object Im working on/ It gives you a grid I placed where I though it should be but ends up being in the total opposite dricetion or all backwardshere to place you project in F 360 Ill include a pic so you might get what Im trying to say . Thanks again for all the help
     

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  19. Alex Chambers

    Alex Chambers Master
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    In Fusion you set an origin in the Cam setup. I don't think it matters where in the grid in a sketch you place your object.

    Alex.
     
  20. David the swarfer

    David the swarfer OpenBuilds Team
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    This explains how to set your origin for the WCS
     
  21. jltcet

    jltcet Well-Known
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    Ya Ive tried this but how do you know which ways forward on the Y or Backwards on the Y or have I missed something (most likely)
     
  22. Alex Chambers

    Alex Chambers Master
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    Usually your Y motors are at the back, but the other clue is that your on X axis the tool moves to the right (when looking at it from the front) when you move in the +ve direction.

    Alex.
     

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