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Type: Posts; User: vakeiros

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  1. Replies
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    Re: Large Epoxy granite VMC building

    exactly.

    however I don't even consider it a problem, I mean the amount of expansion I don't think it to be relevant at all, if it was an abrupt and wide temperature difference it might but in our...
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    Re: Large Epoxy granite VMC building

    well not a better choice, I believe it's a close call. I spoke about that because some genious out there referred alu+EG not being a good idea due to thermal expansion differences. anyway I work with...
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    Re: Large Epoxy granite VMC building

    I used steel, why? well because it's easy to get :P
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    Re: Large Epoxy granite VMC building

    now I'm working on the Head.

    made all the sides for the head block, all sides aluminum and will be EG filled:

    https://i.postimg.cc/LJpBHCDV/15749836115211.jpg
    ...
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    Re: Large Epoxy granite VMC building

    Couple of days ago I finally placed the column on the base, this is the first actual piece of the machine going for the right place! huge step in the build, finally started the actual build!
    ...
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    Re: Large Epoxy granite VMC building

    ok guys, it's been a while since I posted updates and there are quite a few. So I finished the saddle mold and filled it:

    https://i.postimg.cc/p55Yd33s/15749836116898.jpg
    ...
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    Re: Large Epoxy granite VMC building

    thanks mate, yeah I finally start making something about this machine, to much money stalled already so work needs to wait a bit XD
    I'll be making outside work until Nov 8th then it's all for the...
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    Re: Large Epoxy granite VMC building

    also machined my spindle sleeve, this was already made sometime ago but I think it's worth sharing, made out of a 175mm diameter block, bore 120mm H7, this was a challenge, never had machined...
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    Re: Large Epoxy granite VMC building

    so this was a big update, last Friday I filled the column, I hadn't taken any pics of the filling (was very busy filling it) but yeah, essentially was mixing EG and pouring it to a wooden box,...
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    Re: Large Epoxy granite VMC building

    so also finish my column mold meanwhile, here're some pics:

    https://i.postimg.cc/PNCRvKFF/15722522823386.jpg

    https://i.postimg.cc/nC7S0rx4/15722522823937.jpg
    ...
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    Re: Large Epoxy granite VMC building

    sorry, I didn't got notifications on replies and I'd problems with my PC and internet, anyway...




    like I said, been having some tech problems, but yes I finished the cure, 20H at 60ºC.


    ...
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    Re: Large Epoxy granite VMC building

    ok I'm limited to 15 images so I had to split the post, casting coming next

    - - - Updated - - -

    the casting:
    https://i.postimg.cc/xkC8xTVX/IMG-20190929-111917.jpg
    ...
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    Re: Large Epoxy granite VMC building

    So, been some busy weeks for a change... Finally got some time to spend on this project. Made a vibration table, just quick and dirty and guess what, it works! Bought 2 cheap 150w benchgrinders,...
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    Re: NCStudio OR Controller

    Any network cable will do, both direct or crossed, the ethernet cable is just the way of communication like your current LPT but faster. I use Mach3+ESS for 5 years now and never had a problem.
  15. Replies
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    Re: Large Epoxy granite VMC building

    Hi guys, been a while since I posted anything... really busy times... I intended to spend all this month in the machine but it just wasn't possible... Lots of work and . Been gathering more missing...
  16. Thread: Concrete VMC

    by vakeiros
    Replies
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    11,859

    Re: Concrete VMC

    yeah he will take care of that when the rest of the machine is done (assembly, alignment, paint, enclosure, flood coolant), he will use the machine to make the parts he need for the ATC. should be...
  17. Thread: Concrete VMC

    by vakeiros
    Replies
    268
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    11,859

    Re: Concrete VMC

    KERN, DMG and some other, these 2 are on top of my head. when you see something like "mineral casting" or "synthetic granite" is always epoxy+aggregate now for the receipt weel that's the secret...
  18. Thread: Concrete VMC

    by vakeiros
    Replies
    268
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    11,859

    Re: Concrete VMC

    Epoxy it self is great for viration dampening, that's why some of the most accurate VMCs in the world are made this way! great vibration dampening plus very nice thermal stability make these a very...
  19. Thread: Concrete VMC

    by vakeiros
    Replies
    268
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    11,859

    Re: Concrete VMC

    yeah looks good, and cheap :P
  20. Thread: Concrete VMC

    by vakeiros
    Replies
    268
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    11,859

    Re: Concrete VMC

    great, BTW can you show me the air tank buffer you ordered? I already have my air cylinder for the counterweight, also I've here an old 20l CO2 bottle that I'm thinking of using to the tank buffer......
  21. Thread: Concrete VMC

    by vakeiros
    Replies
    268
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    11,859

    Re: Concrete VMC

    is that from me or the ballscrew is making strange noise at the ends?? if yes I guess you have an alignment problem and when the nut gets closer to the fixed blocks it struggles to move ant makes the...
  22. Thread: Concrete VMC

    by vakeiros
    Replies
    268
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    11,859

    Re: Concrete VMC

    My version is the 5.5KW and it's rated torque 26Nm from 0-2000 RPM and going down from there, so he's version is 3.7kW should be in the 15's Nm at least 0-2000RPM, and he will be able to make rigid...
  23. Thread: Concrete VMC

    by vakeiros
    Replies
    268
    Views
    11,859

    Re: Concrete VMC

    you must be confused... he's using a 3.7KW spindle servo motor 12k RPM (should weight about 40kg) + BT30 spindle unit, that's not a router motor... might not be the most powerful motor in the game...
  24. Thread: Concrete VMC

    by vakeiros
    Replies
    268
    Views
    11,859

    Re: Concrete VMC

    looking great mate, keep us posted! I should receive my missing motors tomorrow (5.5kw spindle servo and a 400W absolute servo for the 4th axis), hopefully I will have my castings done by the end of...
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    Re: Large Epoxy granite VMC building

    Hi guys, just one more little update on the thread, as always I've been extremelly busy so been really hard to get anything done on this build, anyway I'm almost done gathering the expensive big...
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