Hermea mount repeat problems

Discussion in 'Tool heads & ToolChanger' started by Thomas Kamsker, May 24, 2020.

  1. Thomas Kamsker

    Thomas Kamsker Active Member

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    So i changed my original E3D Toolchanger setup to have one hermea and 1 Aero + volcano nozzle to print
    The Bodens work fine but the hermea setup doesn't work now at all.
    i normally align the receiver plate with the moving part that it is perfect aligned in x i use an steel ruler to check that , i hope that is correct to works at least for the V6, then i check if that setup is aligned in z means when i did the Aero setup i had to change the mounting to do so.
    the Hermes setup is ok in z. Now i drive the moving part into the receiver in small 0.5mm steps. when it make the click sound. (hardened balls ouch hardened rods ) then i start the locking macro. i removed the cover to see what happens and it seems that it doesn't turn full. But when i hold the package by hand and engage the lock it works so there is no debre or something in the way. i now run out of ideas what else can i Check ?
    any input or ideas appreciated

    2nd issue i have is that the setup is only possible at the most far right position if you have other tools the are in contact but as it is now no real issue
     

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  2. Greg Holloway

    Greg Holloway Administrator
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    Hi,

    Check you have the latest version of the Hemera fan duct as there was an adjustment made to help with alignment.

    You might also find you need to do a bit od adjustment with loosening the screws to get it to align correctly. It can be a little fiddly but shouldnt take too long.

    Those attached photos are a little hard to see as they are quite small.
     
  3. Thomas Kamsker

    Thomas Kamsker Active Member

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    Hi i now played around with the Hermea (i had also some alignment problems with the aero and Vulcan) but the problem is the repeatability .
    I was correcting all angles now it is really parallel less tan 0,15 mm the top is aligned is sideways
    I managed now that first move it works when i put it back and pick it up again the whole stuff has moved in z 0,3 mm and x 0,3mm and this is enough that locking fails. It seems that the construction with this single leg is the weak point because of the weight of the hermea. (The picture is from my start point where you can see the tilt towards Z axis. If i had my 4 axis setup on my mill i would have done the single leg in Alu. So if you aware of any more stable design i would happily test it because i originally wanted to mount 2 hermea in my tool changer setup.
    One way could be to make one part in my resin printer where backplate the single leg and the top black receiver is one pice do you think this make sense ? i would happily test that setup ?
    And maybe CPE is wrong material ? should i try PETG ? or nylon ? it simply feels that this one little leg is not stable enough to fight the momentum and i did several test runs all with rehoming so first pick works 2nd pick fails and this is because the aluminium receiver is then in an different position as it is at first move .. so if there is anything i can do to improve i would happily do that
    thx thomas
     

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  4. Thomas Kamsker

    Thomas Kamsker Active Member

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    Mistery solved ,.. there was an Alu chip where the steel part should have been pressed in ,.. but it wasn't so it couldn't lock properly and the reason why it did it wasn't properly it only held as much too doesn't fall off ... so i am now in the position to start my hermea journey ,..
    thx for input thomas
     
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  5. smoki3

    smoki3 Active Member

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    Some one have issues with the magnet? My tool is too heavy
     
    #5 smoki3, Jul 19, 2020
    Last edited: Jul 20, 2020
  6. Paul Arden

    Paul Arden Well-Known Member

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    I believe I am having a similar issue, it tips slightly back after docking as the magnet won't fully hold it.
     
  7. Paul Arden

    Paul Arden Well-Known Member

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    Ok, I thought I had the latest fan duct but it looks like I printed mine about a month before the update so reprinting now to see if that helps.
     
  8. Paul Arden

    Paul Arden Well-Known Member

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    Printed the most up to date fan duct however even with the reduced size of the dock side mounts it was still just tapping the acrylic panel stopping it from seating properly. I further modified the fan duct to make the size of those mounts match the ones for the receiver support and now it is sticking to the dock correctly.
     

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  9. Jason Chodakowski

    Jason Chodakowski Active Member

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    Kind of wish thingiverse was more like github at times...
     
  10. Paul Arden

    Paul Arden Well-Known Member

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    It would be great if the printed parts were actually on Github like the first release of the V8 tools, I found that much easier to manage.
     
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  11. Paul Arden

    Paul Arden Well-Known Member

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    Ignore that STL, it doesn’t resolve my issue and it is intentional that the duct should sit flush against the acrylic which my STL prevents, so just posting a message here to make sure people don’t use it.
     

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