DIY Motion System and Tool Changer

Discussion in 'Motion System' started by p3t3rp4nd4, Nov 21, 2019.

  1. p3t3rp4nd4

    p3t3rp4nd4 Active Member

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    The postition of the ball screw is the same as the postion of the original lead screw. Only the length was diffrent.
    I left it a bit longer, because the bed was missing and i din´t want to cut it before installing it and then recognise that it´s to short ;)

    I did the first toolchange tests before i edited the macros/cut the ball screw and one time the tool changer head ran into it....
    But luckily no harm was done :)

    Yesterday i printed a first prototype of a simple holder for a raspberry pi zero with an wide angle camera.
    From this position you can see the whole moving area and all the tool.

    IMG_20191209_214610.jpg

    IMG_20191209_214621.jpg

    Also, here are a video and picures from my first dual color prints:




    IMG_20191208_133435.jpg

    IMG_20191208_180336.jpg

    There is a lot room for improvement, but for my first dual color print i´m fine.

    Here is a picture from a rocket printed in vase mode @ around 50mm/s...
    I think the quality is impressive.

    IMG_20191208_185618.jpg
     
    #21 p3t3rp4nd4, Dec 10, 2019
    Last edited: Dec 10, 2019
    mhe, Ntesla66, potti5 and 2 others like this.
  2. Greg Holloway

    Greg Holloway Administrator
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  3. p3t3rp4nd4

    p3t3rp4nd4 Active Member

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    Now that i am on vacation, i got some time to work out the "last" tasks...

    I got to align the nozzles in X and Y with an USB microscope, just like @Amr
    I really liked that idea and the the results are great.

    IMG_20191215_172029.jpg

    IMG_20191215_172019.jpg

    nozzle_alignement.gif

    I also made an new brush holder for the height adjustable brush and changed the prime and purge macros to suit the adjustable brush.

    Prime macro testing:


    This thing and a few other things i uploaded to thingiverse, maybe someone will find it usefull.

    ToolChanger - Adjustable Cleaning Brush
    https://www.thingiverse.com/thing:4053862

    E3D ToolChanger - Toolhead LED Illumination
    https://www.thingiverse.com/thing:4053885

    Emergency Stop Button
    https://www.thingiverse.com/thing:4053908

    E3D ToolChanger Simplify3D Model
    https://www.thingiverse.com/thing:4053993

    E3D ToolChanger - Simple Raspberry Pi Zero Camera Mount
    https://www.thingiverse.com/thing:4054063

    Next thing is to machine the needed parts to install the hemera.
    First testing and playing with printed parts were already done.

    IMG_20191213_072416.jpg
    IMG_20191213_072425.jpg
     
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  4. Greg Holloway

    Greg Holloway Administrator
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    Very cool!.

    I am going to have to isntall the light. S3D now has the bed model loaded too :)
     
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  5. Jai Stanley

    Jai Stanley Well-Known Member

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    Splendid work! Love the nozzle alignment idea. Wish I had the software skills for automatic nozzle alignment in X/Y!

    I'm just looking at making an adjustable brush, now I've got all sorts of hot ends. Great to see it working...
     
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  6. Frostie2k

    Frostie2k Member

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    Can you share the holder from the Paneldue Case to the Profile?

    best regards
    Guenther
     
  7. p3t3rp4nd4

    p3t3rp4nd4 Active Member

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    Here are the .stl and .stp files from the displayholder i made.
    It´s not the final version, but since this works, i haven´t spend more time improving it.

    You have to drill two holes into the case, to get the srews with the allen key.

    Once i find the time, i will improve the case and also the holder.
    But for a quick and easy solution, i think it´s ok.

    I made a few more improvements...
    Like a fan housing for the duet cooling.

    IMG_20191223_195846.jpg IMG_20191225_184248.jpg IMG_20191225_204226.jpg IMG_20191223_193110.jpg

    And a holder for the bowden tubes when using hemera tools instead of titans.

    IMG_20200106_201415.jpg

    These things i will also upload to thingiverse once i got the time.
     

    Attached Files:

  8. Christophe Kafrouni

    Christophe Kafrouni New Member

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    Hey awsome work man!!

    I've been following your work very closely and I was going to start turning my ender 5 plus or Blv cube into a toolchanger (just for fun, nothing serious) but I wanted to know is there place to fit a 2020 extrusion between the rail and the shaft in the ToolHead assembly? if not, would a 1515 fit?

    I plan for the time being on just printing the milled aluminium parts just for testing and maybe get them milled down the road in aluminium.
    Also do you have a links to parts you've bought for the ToolHead assembly and the Dock assembly?

    Thanks a lot, hope to see more of your build!! And of course thanks to Greg for that design.
     
  9. Frostie2k

    Frostie2k Member

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    @p3t3rp4nd4

    thanks.

    How fast can you print with the Hemera? I got ringing and ghosting above 40-45 mm/s. With a Direct Drive Tool that have the same weight, i have no issues till 85-90 mm/s print speed.

    best regards
    Guenther
     
  10. yngndrw

    yngndrw Well-Known Member

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    Is this the gap you're referring to? It's hard to fully see due to the parallax but there's about 18mm of space there.
    20200109_122122-1008x567.jpg
     
  11. smoki3

    smoki3 Active Member

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    @p3t3rp4nd4
    Do you get heating issues on the duet? I never needed active cooling.
    May you can simply use small heatsink on the motor drivers.
     
  12. p3t3rp4nd4

    p3t3rp4nd4 Active Member

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    @smoki3
    I only had one reported driver overtemperature since i use the duet boards.
    Not that i need active cooling, but i had two 60mm fans laying around and nothing to do xD
     
  13. dc42

    dc42 Well-Known Member

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    Duet 2 mounted vertically so that it gets convection cooling should be OK up to 2A motor currents without a fan.
     
  14. John Meacham

    John Meacham Well-Known Member

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    Did you get a chance to put your hermera bowden tube holders online? mine are flapping in the breeze and causing trouble.

    The default path for them is really long, I am having issues with the extruder skipping when using the tubes when they twist up.
     
  15. garethky

    garethky Well-Known Member

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    I would be interested in what parts you used for that ball screw Z axis!

    edit: I think I worked out one option. Railcore's BOM points to ZYLtech as their supplier for the lead screws. They have a reasonably prices 12mm x 4mm pitch ball screws.Is that the same size as what you used?
     
    #35 garethky, Feb 28, 2020
    Last edited: Feb 28, 2020
  16. p3t3rp4nd4

    p3t3rp4nd4 Active Member

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    Yes, I used a cheap one from eBay, which performs really well.
    I was used to redesign the bracket which holds the ballscrew nut. If you are interested I can upload it.
     
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  17. Jocke

    Jocke Member

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    Great work!
    I have just begun planing and machining some parts for this build as well and was hoping for some of your expertise!
    Which stepper motors did you use for the X and Y?
     
  18. p3t3rp4nd4

    p3t3rp4nd4 Active Member

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  19. fantasmag0ria

    fantasmag0ria Member

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    Hi,
    quick question: how long is the x/y belt?
    I'm ordering parts for my DIY motion platform and have no idea how much belt to buy.
     
  20. yngndrw

    yngndrw Well-Known Member

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    The belt paths are around 2m each (A little over to take into account the path around the motor pulleys and the fastening of the ends) - I'd suggest purchasing 5m, 6m or even 10m of belt. If you get 10m, you'll have enough for one or two spares.
     

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