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Ultimo

Discussion in 'Other Builds' started by Brian Slee, Apr 27, 2014.

  1. Brian Slee

    Brian Slee Veteran
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    Brian Slee published a new build:

    Read more about this build...
     
  2. Mark Carew

    Mark Carew OpenBuilds Team
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    This is going to be a serious robot! Looking forward to seeing this one in action :thumbsup:
     
  3. Tweakie

    Tweakie OpenBuilds Team
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    Sounds good Brian, I am looking forward to seeing some of the details. :thumbsup:

    Tweakie.
     
  4. Brian Slee

    Brian Slee Veteran
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    Thanks everyone for all of the up front support! I will be starting the build this week and posting updates as I go, so stay tuned....
    Big shout out to Mark and the Open Builds crew for all of the great work they are doing!!
     
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  5. Brian Slee

    Brian Slee Veteran
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    Hi guys and gals. Not a whole lot to report today as I am still running around sourcing a few odds and ends. I did manage to get my X,Y, and Z axis power supplies wired up and tested. Here is a pic of the motor sets. For the axis motors I am running 3 NEMA 23 570 oz/in which are driven by ST-M5045 4.5A micro-step drivers and powered by separate 48V 5A power supplies. Hope to have more for you tomorrow.
     

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  6. winand

    winand Veteran
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    Nice stuff to start a build with! :)
    Interresting idea to make a 3d printer, mill and plasma cutter with interchangable modules
    But my first thoughts:
    For a 3D printer using NEMA23 motors is overkill, and for milling and plasma cutting you would
    probably want a bigger bed than the 45 cm diagonal?
    Why not go for a traditional XYZ table with a bigger Y range for printing?
     
  7. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    I would have to agree with the previous posters sentiment regarding an XYZ table but for a different reason. Hanging a print head or even a laser off the bottom of a pendulum movement is not a big issue because they have no forces working against them. A milling head however is entirely different. The bit pushes laterally on the work and the work pushes back and trying to achieve sufficient stiffness in a delta style framework such that the bit doesn't just skip off harder materials is going to be a rather substantial undertaking, if it is even at all possible.

    There's no intent to be a downer here but I see significant mechanical advantage working against you in a framework that really doesn't have as much stiffness as perceived that I think there are some issues that need looked into before you sink too much time and funding into this.
     
  8. Brian Slee

    Brian Slee Veteran
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    Hi Winand,
    Thanks for stopping by to take a look at what we are doing. The main reason for not doing a gantry style robot is space. Ultimo fits inside a 1m sq area. And the x-y limits out at 750mm vs 450. I limited the 3d printer to 450mm so I didn't have to add another separate power supply to heat the bed. I am also working on a system that would allow the processing of larger plate sizes so stay tuned as the build progresses.
     
  9. Brian Slee

    Brian Slee Veteran
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    Hi Rick,
    You are correct in the fact that stiffness is critical for milling ops. We think we have a way to add enough stiffness to the frame to make things work. Worst case...If I have to go to a gantry style frame to get everything I want out of the bot, all the stuff I have can be re-used. But that's not the plan ;)
     
  10. Brian Slee

    Brian Slee Veteran
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    WooHoo... My first OpenBuilds shipment arrived today. Man you guys are serious about your packaging, They could have dropped that package from a plane and it would have landed without a scratch :thumbsup:. Now I can start my frame lay out tomorrow. Stay Tuned.....
     
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  11. Brian Slee

    Brian Slee Veteran
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    Hey guys and gals...I hate to say it, but...We interrupt this build for ARGHHHH WORK. That's right I said it the four letter word. I am going to be tied up for a day or two on another project so I will not be able to get a lot done on Ultimo. But I will leave you with a few tidbits to hold you over till I get back. I got all my parts laid out and ready for the build and picked up the mill motor. What a beast!...... 2HP with a top speed of 28000 RPM. We will be using a manual speed control and non contact tach to set our speeds on the first prototype. I would also like to thank my good friend John for printing out my parts for the Bowden extruder You are awesome with a capital "A" bro.
     

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  12. Brian Slee

    Brian Slee Veteran
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    Hi All,
    I had a few minutes to spare while I am waiting on parts for the other project, so I started putting the frame together yesterday. The pup in the background is my buddy Boo. He guards me while I work lol. I have a little more time today so I will try and get the MDF panels cut and the rest of the dry fitting done so I can get the concrete poured into the tubes and start it curing. I will be using fiber reinforced cement (no aggregate) to add the stiffness to the frame, which is rated for 5000 PSI compression strength for a 2 " section. Stay Tuned.....
     

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  13. Brian Slee

    Brian Slee Veteran
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    Ok here is the leg with the V-slot attached.
     

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  14. Brian Slee

    Brian Slee Veteran
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    Getting ready to make the horizontal pieces.
     

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  15. Brian Slee

    Brian Slee Veteran
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    Boo and I have been busy today. We even managed to get the first horizontal frame piece all laid out and cut to size ;O)
     

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  16. Mark Carew

    Mark Carew OpenBuilds Team
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    Looking great Brian keep up the good work! This is going to be a fun build to follow along with :thumbsup:
     
  17. Brian Slee

    Brian Slee Veteran
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    Good Morning All,
    Thanks Mark. I will try to keep it worth watching.

    Well folks after getting the first panel done I sat back and evaluated my work....UGLY! Is all I can say :(

    I cut the panel free hand on the band saw and it was just too big to manage a clean precise radial cut not to mention the fact that I managed to knock my blade alignment completely off during the cut (surprised I didn't dump a blade in the process). Which meant I had to spend a lot of time with the sander to get it looking presentable. Sooo.....After sleeping on it I decided to expand my circle cutting jig (sort of)...which produces perfect circles with almost no effort. Instead of cutting a piece of wood and adding it to the jig I had I just took my dowel jig and locked it into my work bench vise at the precise radius I want. Here is a picture of the setup I will be using today. As always Boo was a big help. Thanks Boo I couldn't have done it without you ;O) I will let you know how the new setup works later

    Stay Tuned....
     

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    #17 Brian Slee, May 7, 2014
    Last edited: May 13, 2014
  18. Brian Slee

    Brian Slee Veteran
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    Smooth like butter!! I changed my layout technique a little and the new jig works great. I should have no problem finishing up the other two panels today :D
     

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  19. Brian Slee

    Brian Slee Veteran
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    Woot Woot the panels are cut. Ultimo should be standing on his own three feet tomorrow.

    Stay Tuned.....
     

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  20. Brian Slee

    Brian Slee Veteran
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    OUCH!!!
    Our first mishap....I took the stack of panels off my bench vise and set them aside to start a new setup for cutting the holes for the PVC. Let's just say the boxes I leaned it against were not up to the task of maintaining position against the heavy load and the panels slipped to the floor. I was lucky, in that no damage was done to the panels, but I don't think my rod will ever be the same....
    Sooo,,,, instead of getting the holes cut like I planned I ended up building a shuttle cart for the workbench. Now I can just wheel everything around to the tool I want to use. I still have to add straps but I think this is going to help immensely.

    Stay Tuned.....
     

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    • Ouch.jpg
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  21. Brian Slee

    Brian Slee Veteran
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    Hi All,
    Man the sawdust has been really flying today. Good thing Boo makes a terrific dust mop ;). Thanks for helping keep me straight buddy.
    The frame is up!!!! Wohoooo. Now I can mount my rail and get all my components laid out for installation.....

    Stay Tuned....
     

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  22. Tweakie

    Tweakie OpenBuilds Team
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    It's coming along nicely Brian, thanks for posting all the pictures - I am getting quite excited seeing the progress you are making :thumbsup:

    (please make sure that you and boo take care with that MDF dust, it is not good stuff to be inhaling ;)).

    Tweakie.
     
  23. Brian Slee

    Brian Slee Veteran
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    Thanks Tweakie.
    Boo and I will be sure to keep the vacuum on while we are cutting and drilling just to be safe.

    I am being lazy today but I did throw a v-slot on one of the posts so you guys had something to look at today :)

    The V-slot and the 2" PVC go together very nicely. The curve of the PVC gives me a lot of contact area with the extrusion all along the length so it should be able to handle a lot of pressure without deforming the plastic. We shall see....

    Stay Tuned....
     

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  24. Mark Carew

    Mark Carew OpenBuilds Team
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    Well done Brian! :thumbsup: This is going to be HUGE. Can't wait to see the first moves on this machine.
    Keep up the great work.
     
  25. Brian Slee

    Brian Slee Veteran
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    Hi Kids and Kiddettes,
    Hope you all had a good weekend and a great Mother's Day like we did!

    LOL @ Kram242...Thanks for the kudos and ME TOO ME TOO!!!!

    Well after a week of furious flurries of fanatical and feverish fervor I decided a good field day was in order. And I wanted to assure Tweakie that Boo is safe with me ;) so I spent the day vacuuming, rubbing and scrubbing. As always Boo is there to put the QA stamp on it after I pass inspection. Thanks for all the help today Boo. I will get back to making a mess tomorrow.

    Stay Tuned.....
     

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  26. Tweakie

    Tweakie OpenBuilds Team
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    That's what I like to see Brian - a nice clean shop (totally unlike mine) :thumbsup:

    You certainly have an excellent helper there ;)

    Tweakie.
     
  27. Brian Slee

    Brian Slee Veteran
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    LOL Thanks Tweakie. And NO I don't do windows ;)

    Yes Boo is a wonderful helper. Today I needed a stationary reference point while I was getting everything level and square and Boo was right there for me :) Boo you are the bestest dog a boy could have.....

    This is a very critical part so I will be taking my time with it. Remember kids...When it comes to robots, there's no such thing as "close enough"

    ...At least if you want it to work

    Stay Tuned......
     

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    #27 Brian Slee, May 13, 2014
    Last edited: May 13, 2014
  28. John R

    John R Well-Known
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    Great job Brian! - WOW, this thing's a monster!! ..and it fits so nicely in the corner! The Delta configuration is making good sense! Can't wait to see it making chips! What's next?
     
  29. Brian Slee

    Brian Slee Veteran
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    Thanks John,,,
    I still have a bit of work to do on the frame. I have to get my top piece drilled and cut then I will add some pieces to the bottom between the two plates to tie them together for additional stiffness then I can move on to getting the electronics mounted and connected up. Lots left to do.

    Stay Tuned....
     
  30. Brian Slee

    Brian Slee Veteran
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    Hi All,
    Sorry I haven't posted much this week. My other project required my attention for a couple days. I am happy to report though that I have just about finished everything I need to do on it, so I can now devote all of my available time to finishing Ultimo. My goal is to have the frame all complete, and the electronics mounted this week.

    Stay Tuned...
     

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