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  1. #2061
    Join Date
    Sep 2016
    Posts
    506

    OmioCNC report

    Quote Originally Posted by davekenyon View Post
    Bloody hell - didn't know I could... but I have!

    https://www.youtube.com/watch?v=hGd9...ature=youtu.be
    Doesn’t sound like the motor is stalling so must be coupler slippage. Tighten up the little coupler connecting the motor shaft to the end of the screw, it clamps on each side so give them both a crank. Given it’s been spinning inside the surface of the coupler could be ragged, might be worth buying a better one to replace them all anyway.

    It will look similar to this




    Sent from my iPhone using Tapatalk

  2. #2062
    Join Date
    Nov 2011
    Posts
    19

    Re: OmioCNC report

    That's got it sorted thanks! Any recommendations on improved couplers? Thanks.

  3. #2063
    Join Date
    Jan 2007
    Posts
    626

    Re: OmioCNC report

    Quote Originally Posted by Mmpie View Post
    Doesn’t sound like the motor is stalling so must be coupler slippage. Tighten up the little coupler connecting the motor shaft to the end of the screw, it clamps on each side so give them both a crank. Given it’s been spinning inside the surface of the coupler could be ragged, might be worth buying a better one to replace them all anyway.

    It will look similar to this




    Sent from my iPhone using Tapatalk
    Nice pick up Mmpie!

  4. #2064
    Join Date
    Dec 2017
    Posts
    24

    Re: OmioCNC report

    Have anyone had problems with losing steps on Omio? I purchased a Omio X8-2200L-USB more than an a year and have used it on daily basis without any problems. However, last week it began losing steps on Z, not often but all of a sudden when I don't want it to happen (ruined two pieces of nice exotic wood and a router bits).
    I have checked so there is no obstruction when turning the screw. Tigthened the screws on the flexible jaw coupling. I also diconnected the cable and connected it to a multimeter (in beep mode) and while bending it on critical positions.
    I can make two or three successful jobs (running approximately one hour) and then it fails all of the sudden.

  5. #2065
    Join Date
    May 2015
    Posts
    1422

    Re: OmioCNC report

    That sucks

    Could something from the job be jamming the screw during the cut? You reckon it's moving freely now, but don't forget the problem is spurious. Could it be too aggressive a Z move on the toolpath - sometimes you get away with it, sometimes not? I'd also maybe try switching the stepper with another axis and see if the problem moves, then maybe the driver, just to eliminate those.

  6. #2066
    Join Date
    Oct 2014
    Posts
    11

    Re: OmioCNC report

    For the last few weeks I've been building a new electronics cabinet for my X6-2200L centered around a UC300ETH and UB1 breakout board. Just recently I figured out VFD speed control and decided to make a video on it. I know there's a few guys here looking to make the transition over from Mach3 to UCCNC as well so I'm going to try to do my best to document my progress in video format.
    Current issue is that I'm not sending a pure 0-10V analog speed signal to the VFD but something much closer to 0-13V so I'll have to play around with VFD parameters and UCCNC's PWM configuration to resolve that. Next step is to clean up the wiring, make some chips, and start working on preparing for the ATC spindle that I ordered from JGL.

    https://youtu.be/m3QBfp_2ayc

  7. #2067
    Join Date
    Jan 2007
    Posts
    626

    Re: OmioCNC report

    I had the same problem with the Nowforever VFD.
    The 12V output is closer to 13V, so I used a 7810 low drop out Voltage Regulator to drop it down to 10V.
    Works fine.

    Steve

  8. #2068
    Join Date
    Sep 2016
    Posts
    506

    Re: OmioCNC report

    Quote Originally Posted by Belarusian View Post
    For the last few weeks I've been building a new electronics cabinet for my X6-2200L centered around a UC300ETH and UB1 breakout board. Just recently I figured out VFD speed control and decided to make a video on it. I know there's a few guys here looking to make the transition over from Mach3 to UCCNC as well so I'm going to try to do my best to document my progress in video format.
    Current issue is that I'm not sending a pure 0-10V analog speed signal to the VFD but something much closer to 0-13V so I'll have to play around with VFD parameters and UCCNC's PWM configuration to resolve that. Next step is to clean up the wiring, make some chips, and start working on preparing for the ATC spindle that I ordered from JGL.

    https://youtu.be/m3QBfp_2ayc
    You’re putting an ATC spindle on the X6?

    For VFD control, use modbus. You will get perfect RPM’s and data fed back to mach3 which you can have shown up on the mach3 screen to see how things are running.


    Sent from my iPhone using Tapatalk

  9. #2069
    Join Date
    Jan 2007
    Posts
    626

    Re: OmioCNC report

    Quote Originally Posted by Mmpie View Post
    You’re putting an ATC spindle on the X6?
    For VFD control, use modbus. You will get perfect RPM’s and data fed back to mach3 which you can have shown up on the mach3 screen to see how things are running.
    Sent from my iPhone using Tapatalk
    I thought about doing that, but I bauked at the learning curve to get the Modbus comms working......It may not be hard, I don't know.
    I've just had bad experiences in the past...lol

    One day I'll look at it......


    Steve

  10. #2070
    Join Date
    Dec 2012
    Posts
    390

    Re: OmioCNC report

    Quote Originally Posted by Sterob View Post
    I thought about doing that, but I bauked at the learning curve to get the Modbus comms working......It may not be hard, I don't know.
    I've just had bad experiences in the past...lol

    One day I'll look at it......


    Steve
    Somewhere in this thread there are step-by-step instructions on how to do it.

  11. #2071
    Join Date
    Sep 2016
    Posts
    506

    Re: OmioCNC report

    Modbus isn’t that difficult actually. If you have any knowledge of pc coding you’ll find it a breeze. I didn’t but I looked at it and googled it, and looked a bit more, scratched my head a few times then suddenly it all clicked and I managed to do exactly what I wanted to do really quite simply.

    Definitely worth doing you can have any info from your vfd from estimated RPM (pretty damn accurate) to voltage to how much current your spindle is pulling read out all in real time right on your screen in Mach3 and your programmed spindle speed will be pretty much dead nuts accurate - tested mine with a cheap digital tacho at 1000 rpm increments all the way to 24000 and every single speed the tacho read to within 10 RPM.

    If you get more advanced I’m pretty certain you could have safety macro’s written so if you pull too much current or whatever it could automatically soft estop the machine to prevent any real damage from taking place. Can happen when your cutters start to go dull which is usually when you’re looking the other way.


    Sent from my iPhone using Tapatalk

  12. #2072
    Join Date
    Oct 2014
    Posts
    11

    Re: OmioCNC report

    Made another video going over the progress I've made upgrading the X6 with an ATC spindle and my UCCNC electronics. Whats been very pleasant is that the X6 router required minimal modification so far, just a larger drag chain had to be installed which required a few new holes to be drill and tapped.
    Also made a nice little modification on the X axis, by modifying the limit switch I've been able to extend the X axis travel to 365mm (original was 350 I believe) which was just enough for me to be able to fit 8 ISO20 tool holders on the tool rack.
    One issue I'm trying to tackle right now is bed leveling and finding the ideal approach between shimming the gantry, tramming the spindle, and surfacing the bed/spoilboard.
    The biggest obstacle now is designing, machining, and assembling the pneumatic tool rack and enclosure for the tool holders. Due to the small size of the table it's far too easy to get chips onto the tool holders and the dust blowoff isn't perfect. I expect to have a solution and a 90%+ done machine within the next few weeks.

    If anyone feels like this deserves it's own thread please let me know, I don't want to put too much work into documenting my progress however I'm more than happy to share the things that I've learned with anyone looking to undertake a similar endeavor.

    https://youtu.be/qoQHNMf2a_s

  13. #2073
    Join Date
    Jan 2007
    Posts
    626

    Re: OmioCNC report

    Nice work. You have put a lot of hours in that project already.

  14. #2074
    Join Date
    Oct 2014
    Posts
    11

    Re: OmioCNC report

    Has anyone found where I can buy more of the square M6 nuts that this machine came with? DIN557 appears to be smaller, no luck finding any other standards to go off of.

  15. #2075
    Join Date
    May 2015
    Posts
    1422

    Re: OmioCNC report

    Pretty sure someone did a while back, somewhere in this behemoth of a thread.

    I ended up using coach bolts upside down in the T slots and screwing the nuts down on top.

  16. #2076
    Join Date
    Jun 2010
    Posts
    4252

    Re: OmioCNC report

    WHY use square nuts? Why not hex?
    Have you tried eBay? They have plenty.

    Cheers
    Roger

  17. #2077
    Join Date
    May 2015
    Posts
    1422

    Re: OmioCNC report

    Square for T nuts. Less likely to spin when you're loading up the clamping force, bigger surface area means less likely to create indent in the back face of the T track.

  18. #2078
    Join Date
    Sep 2016
    Posts
    506

    Re: OmioCNC report

    Wow. Great job sticking that on.

    I use drop in t-nuts for the Bosch rexroth profile. Very handy as if you’ve got things set up you can still drop a t-nut in from the top, no need to move stuff to slide it in.


    Sent from my iPhone using Tapatalk

  19. #2079
    Join Date
    Oct 2014
    Posts
    11

    Re: OmioCNC report

    I took a long break from working on the router (burning out and other commitments) but I'm back with another update video. This time I'm happy to report that the machine is now capable of automatic tool changes with the ATC spindle and pneumatically actuated tool rack. I'll be making a separate thread soon where I plan on sharing my macros and finer details about the machine since I've been getting a lot of inquiries about it.

    https://youtu.be/i5Vgb4ftkHs

  20. #2080
    Join Date
    Sep 2016
    Posts
    506

    Re: OmioCNC report

    Quote Originally Posted by Belarusian View Post
    I took a long break from working on the router (burning out and other commitments) but I'm back with another update video. This time I'm happy to report that the machine is now capable of automatic tool changes with the ATC spindle and pneumatically actuated tool rack. I'll be making a separate thread soon where I plan on sharing my macros and finer details about the machine since I've been getting a lot of inquiries about it.

    https://youtu.be/i5Vgb4ftkHs
    That’s brilliant, great job


    Sent from my iPhone using Tapatalk

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