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Troubleshooting An Anomoloy

Discussion in 'CNC Mills/Routers' started by ryushi5, Jul 22, 2020.

  1. ryushi5

    ryushi5 New
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    So, I'm relatively new to CNC. I am running a Lead 1010 system, Openbuilds Control v1.0.238, Blackbox controller. I made my GCode using Fusion 360 and Swarfer V13 for post processing.

    What this program does is simply cut an angled edge on a piece that has already been cut out.

    What I'm experiencing is that after a couple operations, it seems to add a few inches to the Y coordinate before continuing (as you can see by the line that takes off to the top left).

    At first, I figured maybe I was losing steps in the Y axis, so I checked all the couplers and wheels to make sure that nothing was binding or slipping. I found a few wheels that were maybe a little too tight, so I tried again. It ended up doing the same thing.

    At this point I figure there's probably an issue with the GCode, but from what I can see with a very amateur eye. . .things seem alright.

    Any thoughts on what may be wrong? Pictures and GCode attached.
     

    Attached Files:

  2. phil from seattle

    phil from seattle Journeyman
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    use a g-code visualizer to make sure your g-code will do what you want. I loaded it into one I use (NC Viewer // GCode Viewer and Machine Simulator) and it doesn't look right to me but I have no idea what you are trying to achieve. Each pass is offset a bit. Is that the problem you are seeing?
     

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  3. David the swarfer

    David the swarfer OpenBuilds Team
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    Your Gcode is fine
    your Y axis is sticking on a return stroke and losing steps.
     
    ryushi5 and Peter Van Der Walt like this.
  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Post your Grbl settings too. Skipping during seek moves could also indicate issues with stalling due to inappropriate settings (max feed or acceleration)
     
    #4 Peter Van Der Walt, Jul 24, 2020
    Last edited: Jul 24, 2020
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  5. ryushi5

    ryushi5 New
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    Thank you all for your help on this.

    Peter, I think you may be correct on stalling out. My GRBL settings are all pretty much the default settings that load for the Lead 1010 except that I have changed the max speed to 4000 mm/min.

    I purchased the 345oz*in NEMA 23 steppers with this kit. Is there a recommended setting for these, or should I simply turn that down until I stop having problems?
     
  6. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Just turn it down a little, or acceleration values so it ramps up to speed better. Every machine is just a little differently built so a little trial and error is needed sometimes
     
    Mark Carew and ryushi5 like this.

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