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OpenBuilds OX CNC Machine

Discussion in 'CNC Mills/Routers' started by Mark Carew, Dec 15, 2013.

  1. Gaou²

    Gaou² New
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    i haven't did anything in z axis . it is stock ox 1500x1000 . i have some flex on the whole carriage that runs on the double 60x20 profile but i dont mind . What is bother me is the flex on the z axis. When it comes to drill then it is flexing along y axis. i mean instead of going down vertically ( z-axis) when it touch the part then it flexs a little on the y axis.
    [​IMG][​IMG]
     
  2. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    The easiest solution is just to extend the spacer blocks. Looks like you could easily add 60mm to them. The additional leverage adds a fair amount of rigidity.

    spacer blocks.jpg
     
  3. Gary Caruso

    Gary Caruso OpenBuilds Team
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    Yes, this or do the C-Beam upgrade (Ox HD)
     

    Attached Files:

    Peter Van Der Walt likes this.
  4. Gaou²

    Gaou² New
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    the c-beam upgrade needs internal mini wheels, or it is just the outside wheels ?
     
  5. Gary Caruso

    Gary Caruso OpenBuilds Team
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    At first I was using the standard Ox HD that Chrisclub cuts (no inside wheels), but have since designed my own plates (the ones in the pic) that do have the inside wheels as well.
    see pics
    Cheers
    Gary
     

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  6. Peterlovediy

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    I've tested Nema 23 CNC stepper motor from STEPPERONLINE. This stepper motor performs very well for my application and exceeded my expectations. I'm using these in a milling cnc I'm building to drive the axis ball screws and have been able to achieve speeds in excess of 2200rpm which with a 5mm pitch screw, translates into 11,000mm/min or over 400IPM. Mass moved during these tests was 60lbs. Granted the torque at this speed is next to nothing for the given voltage but at least is an indicator of where the limitations are.
     
  7. Valentin Cortes Ramirez

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    Hi!
    I have a problem with machine, I completed the assembly but when I want to use the machine, the machine have problem.
    I have tried to machine a simple circle but it is deformed, I think that the axes have some blur but I don't know how to know what the real problem is.
    Can anybody help me?
     
  8. Giarc

    Giarc Master
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    You may have a loose screw on your pulley. Or you may need to calibrate your x, y, and z axis. If it is a belted system, use Steps per millimeter - belt driven systems to figure out what your steps/mm should be. Then do this:


    Or if using the Openbuilds software, there is instructions on how to calibrate.
     
  9. DarkPenguin

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    Double check that all the wheels are appropriately tight against the rails. If you can spin them with a finger the opposite eccentric will need to be adjusted.
     
  10. DarkPenguin

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    Are those plate designs available? Or just the plates? I've been working on a design to attach a c-beam z to my OX but it a tried and true version already exists...
     
  11. Gary Caruso

    Gary Caruso OpenBuilds Team
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    Sure I could post them, will need some time to clean up the file and I'll post.
    Cheers
    Gary
     
  12. DarkPenguin

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    Very cool!
     
  13. Gary Caruso

    Gary Caruso OpenBuilds Team
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    Just posted in my builds section.
    BTW if you have a standard OX with 2060 gantry v-slots this wont work!

    Cheers
    Gary
     
  14. DarkPenguin

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    I'm upgrading the a-axis, too.

    Thanks!
     
  15. DarkPenguin

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    Sooo... What's the best way to add a homing switch to the z-axis? (Stock, not upgraded yet.)
     
  16. John Brown

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    Dumb question, i've been following this build for a while but I noticed a lot of builders are using this for wood, can I use this for acrylic also?. I am getting deeper into custom PCs and want to have my own CNC since I PCSed to Korea.
     
  17. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    Not a dumb question at all. Actually the Ox is ideal for acrylic as the belts allow for faster cutter head movement than screws. Acrylic cuts best with a low spindle speed and fast cutter head movement as this generates less heat at the cutter head, promoting better cutting and less melting of the plastic.
     
    Peter Van Der Walt likes this.

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