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Openbuilds Control /Fusion 360

Discussion in 'OpenBuilds Forum Help' started by Kristoffer Torsvik, May 5, 2019.

  1. Kristoffer Torsvik

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    Hello,

    I'm new to openbuilds and just got my LEAD CNC 1010 machine, still waiting for my spindle. In the meantime I've been playing around with the simultaion function in the openbuilds control software and it looks like it stops at my first G3 CCW radial line code. I can see the toolpath past that point, but it wont simulate. I'm using Fusion 360 as my CAD/CAM software.

    Does anyone know if what i can do to fix this? I've uploaded my file in case anyone wants to try.
     

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    • 1001.nc
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  2. sharmstr

    sharmstr Master
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  3. Kristoffer Torsvik

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    Thanks, but it's still stoping at the same spot. NCviewer has no problems reading and simulating my files
     
  4. sharmstr

    sharmstr Master
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    So it appears to only effect simulation. If you run the job it appears to work fine. (except for your tool change line which is one of the reasons you should use the post processor I linked you to.)

    @Peter Van Der Walt Can you have a look at this:? I never use simulation so I havent noticed this before, but I loaded a few files that I have successfully run on the machine before and they all fail simulation and G2 or G3 commands. Thank you :)
     
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  5. Kristoffer Torsvik

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    Thank you,

    I'll try to run the job as soon as I can using your post processor :)
     
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  6. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Correct, the simulator isnt clever enough for G2/3s sometimes, it just jumps from start-to-end points.

    Will run fine though
     
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  7. Kristoffer Torsvik

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    Hello again!

    I tried to run the program today, worked like a charm. But I had some problems with the flexible coupling on my Y-axis, it would lose grip on the lead screw some times at high feeds (2500mm/min +). during assembly I felt the nut blocks were very tight, could this be the problem and I should just run the machine at lower feeds untill the nut blocks wear in a little?
     
  8. sharmstr

    sharmstr Master
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    Dry silicone spray works wonders on those nut blocks. I use the WD-40 brand but there are others. Just make sure its the dry stuff and spray it on the screws. WD-40 Specialist
     
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  9. Alex Chambers

    Alex Chambers Master
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    It's a bit late to say this now (unless you want to dismantle bits of your machine) but the nut blocks are usually tight when new and the advice is to grip the leadscrew in a drill chuck and run it back and forth a few times. @sharmstr's advice re a dry lubricant (don't use an oily one - dust sticks to it) will help. Also it might help your flexible coupler get a better grip if you can get it's grubscrew between the threads of the leadscrew.
    Hope this helps, Alex.
     
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  10. sharmstr

    sharmstr Master
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    Flexible coupler doesnt have set screws. You're thinking of the lock collar perhaps.
     
  11. Alex Chambers

    Alex Chambers Master
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    Ahh - depends on the make of the flexible coupler - some have a screw which compresses the coupler onto a shaft - mine have grubscrews - two of them at 90 degrees grip the leadscrew.
    Alex.
    I told (a bit of) a lie - I just went and checked - my flexible couplers use both methods - one screw compresses the coupler to grip the leadscrew, the other bears on the surface of the leadscrew - it has a point on it that I was able to get between the threads giving it better grip than compression alone.
     
    #11 Alex Chambers, May 8, 2019
    Last edited: May 8, 2019
  12. sharmstr

    sharmstr Master
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    Yes, but he has a Lead 1010 that have the clamping style. I suppose one could drill and tap a hole on the screw side.
     
  13. Kristoffer Torsvik

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    Thanks for all the tips, guys!! the flexible couplers does have both set screws and clamping screws, maybe the big nema 23 motors have too much torque for the small 3mm set screw? I've designed a new coupler with TR8x8 threads clamped to the lead screw using 4 M5 bolts and 2 M4 set screws for the motor shaft, I'll give that a go when I can get them made
     
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  14. Kristoffer Torsvik

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    If you have 3D printers and want to try the design, im uploading the STL file. i have modeled the threads, but it might be better to use thread inserts
     

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  15. Alex Chambers

    Alex Chambers Master
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    Could I ask you to post this in Resources where more people are likely to find it?
    Thanks, Alex.:thumbsup::thumbsup::thumbsup:
     
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