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OpenBuilds WorkBee 1510

Discussion in 'CNC Mills/Routers' started by Mark Carew, Jun 15, 2018.

  1. sharmstr

    sharmstr OpenBuilds Team
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    Hi Guys,

    I just attempted a surfacing job and it stopped 2/3rds of the way through. No alarm or limit switch. Just stopped all movement. I have an xPro with commands being sent using OpenBuildsMachineDriver software. I took a short video of the interface when it stopped. You'll see there are no errors. The interface says its idle. Though the video doesnt show this, pause and stop jobs were unresponsive. The gcode was generated from Fusion360 using the strooom post. I'm running all of this on Windows 10 laptop with no power saving settings enabled.

    On the hardware side, its a Dewalt DWP611 plugged into a separate circuit than the controller. The usb cable has a big ol ferrule on it and is no where near the vacuum or router wires. The router power cord isnt bundled with the machine wires. All of my motor and limit switch wires are shielded cables with the drain wires attached to a ground bus.

    With all of that info out of the way... I did notice the machine lagged on the last change of direction just before this happened. The best way I can explain it is that is seemed it had to think about what to do next. Like buffering or something. What does the "Queue" number mean in the bottom right hand part of the OBMD screen mean?

     
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Queue = how many lines left to send (when it gets to zero the job is done).

    If theres any errors they popup onscreen (from v1.0.110 onward) so you dont miss them. If you havent, please update to 1.0.110

    Try again, see if you can pickup a pattern. Once off happening is probably just some EMI on the USB.

    The driver doesnt pickup very quick disconnect/connects (as there is some expected latency) - so run USBLogView - Records the details of any USB device that is plugged or unplugged into your system and see if the device drops in/out (you can keep it running at the same time - very helpful tool)
     
    #92 Peter Van Der Walt, Oct 27, 2018
    Last edited: Oct 27, 2018
  3. sharmstr

    sharmstr OpenBuilds Team
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    Cool. I'll run it again today. I was on 1.0.110 when it happened. I'm the one that requested that the error messages stay on screen a bit longer :)
     
    Peter Van Der Walt likes this.
  4. Grimace

    Grimace New
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    I created these 2 signs using VCarve Pro (set to inches.) The toolpaths were saved as "XCarve (inch) gcode" and were profile cuts using a 60° half-inch v-bit.

    The top sign in the "Blessings" photo was run using the OpenBuilds controller; the bottom using grbl panel. You can see that the right border didn't line up on either, but was much better on the OpenBuilds controller. On the "Thankful" sign you can see that the border is misaligned as it connects the circle and the "L" is off a bit.

    As I had previously been saving toolpaths as "grbl (inch)" and had this same problem, I tried XCarve after reading in a forum that some were having more success with "XCarve grbl."

    This misalignment seems to occur only on the Y-axis but I am detecting no noticeable machine problems. Is this a code, controller,settings issue?
     

    Attached Files:

  5. sharmstr

    sharmstr OpenBuilds Team
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    I had a similar issue. Turned out that the screw holding one of the Y axis belt tensioners vibrated loose. Re-tensioned the belt and the problem went away.
     
  6. GrayUK

    GrayUK Openbuilds Team Elder
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    It looks to me as if the error is in the X-Axis, left to right. :)
    However, it seems to be in exactly the same place, if it were me, I'd run the same program a couple of times and watch for any variation in error. :rolleyes:
    Maybe position your piece of material a couple on inches up or down, to see if the error is repeated in the equivalent position, or if the error moves with the position. If you can see what I'm getting at? :)
     
    MaryD likes this.
  7. sharmstr

    sharmstr OpenBuilds Team
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    Are the steps/mm for the motors just a starting point? I just checked my Y axis and its not moving far enough for the given distance. (i.e. only 398mm instead of 400mm). I have it set to 26.667 as per the doc. I have checked the ruler I'm using with two other rulers to make sure thats not the problem.
     
  8. Giarc

    Giarc OpenBuilds Team
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    That is just a starting point. You need to calibrate each axis like this:


    There are other higher production value videos on the topic on youtube, as well. Also see this for more info on steps/mm calculation.
    gnea/grbl
     
  9. Giarc

    Giarc OpenBuilds Team
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    So for your situation (only going 398 istead of the 400 commanded), the math looks like this:

    commanded 400mm/actual 398mm = 1.005025125628

    1.005025125628*26.667 theoretical steps per mm = 26.801005025122 actual steps/mm

    If you saw my math grades in both high school and college you would realize it would be best to double check this yourself.:thumbsup:
     
    sharmstr likes this.
  10. Grimace

    Grimace New
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    Thanks @sharmstr that wasn't it. :-(
     
  11. wpickensjr

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    In the planning phase for my first build. What are your thoughts about extending the Y-Axis to >1250mm cutting area? I am thinking with a cutting area greater than 4', I would be able to use tiling to cut full 4'x8' sheets. My immediate concern is with the rigidity of the Y-Axis, will the single beam have enough strength for a large span? Has anyone else had any luck with 4' width machine?
     
  12. DLIO

    DLIO New
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    hello all, im a newbie here and just got my workbee1510 belt driven assembled and cant get to get circles round...kind of feeling lost and desperate to be honnest...any help? many thanks. DLIO
     
  13. gibson

    gibson Well-Known
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    i had to slave my y-axis .. so now they both move same time .. and i double belted mine and that helped me out a lot.. the workbee is a great setup though make sure every thang is tight...ive got the ox build ..
     
  14. DLIO

    DLIO New
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    After checking all I noticed a loose y axis pulley. Re-mouted all back up and run again the circles. Better results but still the start point and end point of circle does not match. Besides when cutting the circle that it seems the end mill is cutting small segments of the circle at a time...:/ any
     

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  15. J-P

    J-P New
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    Hi, I was wondering if anyone has a copy of the assembly he could share as a Step or Iges, or anything importable in a real CAD software, as it seems you need to pay for Sketchup Pro in order to export...
    Otherwhise, what I really need is the overall dimensions. Are 1500mm x 1000mm the real dimension, does it includes the steppers and cable drag chains? Thanks!
     
  16. sharmstr

    sharmstr OpenBuilds Team
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    Its more like 1515 x 1013 without motors. Add the length of your motors to the 1013 dimension. The drag chain runs under the motor so no need to account for that.
     
  17. Mike Stephany

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    What is the max weight of a spindle that can be used for this build?
    Thanks!
     
  18. Joe Douglas

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    Is it possible to make the Z axis go deeper like on the 1010? Maybe make the gantry taller and the waist board thinner?
     
  19. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    The easy solution is to build it with the rails under the bed laid flat like in the 1010. Just remember the farther you make the Z-axis reach, the greater the leverage that is applied to the system which can lead to torsional deflection of the X-axis resulting in lower quality cuts.
     
  20. sharmstr

    sharmstr OpenBuilds Team
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  21. jtovar78

    jtovar78 New
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    Ordered mine and it should be here on Monday. Reading through this thread and saw your previous post. Just curious if you went through with using the 20x60 spoil beams instead of the 20x80? If so, did it compromise any stability of the table?

    Thanks!
     
  22. sharmstr

    sharmstr OpenBuilds Team
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    I've gone through a few different setups. Currently, which I'm happy with, I have 3 20x80's laying on the 80 side with bracing in between (ignore the Y beam supports since you cant do that with a stock setup): Shawn's Workbee 1510

    Edit: Found a better picture

    20190223_124931.jpg

    Edit Edit: I guess I should explain that I dont attach my wasteboard like the stock build. I have a single sheet that I attached drop in t-nuts to that attach to the 20x80. Then on top of that I have replaceable sections. That way I never have to lift the frame up to change out any of the wasteboard.
     
    #112 sharmstr, Jun 22, 2019
    Last edited: Jun 22, 2019
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  23. ludo10

    ludo10 New
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    hi, no manual and assembly video unavailable, what do I do with all those parts !!
     
  24. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    The "Build" convers the writeup: See OpenBuilds Workbee 1510 (60" x 40")
    Video: See (Embedded in the Build page linked above too)
     
  25. ludo10

    ludo10 New
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    ok thanks, was looking by separate axis links
     
  26. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Ahh good catch, I will alert the video team that the "chapter" links are broken! :)
     
  27. SeriousCaller

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    I'm at step 3 in the assembly video, and the black-wheels are binding when I tighten the nylon-nuts. Even if I only use my hands, and screw the nut in until there's no more wobble in the 27 mm screw. If I try to spin the wheel at this point, there's some resistance :(.

    Pictures:
    Imgur

    I assembled the wheels with a bearing on one side, then a shim on the other, plus a bearing. Then attached it to the y-axis plate, using a 27mm screw though the plate, an aluminium spacer (10 x 5 x 6 mm), two shims (8 x 5 x 1mm), a wheel, and the nylon nut (8mm).

    What am I doing wrong?
     
  28. Alex Chambers

    Alex Chambers Master
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    I'd say you were overtightening the screws, except that the screw is hardly reaching the nylon in the nyloc. Are you sure you have used the 27mm screws?
    Alex.
     
  29. SeriousCaller

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    Updated with measured screw:
    Imgur

    Isn't it weird? :( The wheel starts to bind even if I just use my fingers to tighten...
     
  30. Alex Chambers

    Alex Chambers Master
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    In your pics one of the wheels doesn't seem to have the bearing fully inserted - the bearing should be flush with the outside of the wheel.

    Can you get a lower angle shot of the wheel on the screw? Ideally with the screw vertical in the pic so I can see whats happening between the wheel and the spacer?

    Alex.
     
    Peter Van Der Walt likes this.

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