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  1. #1
    Wal's Avatar
    Lives in Stockport, United Kingdom. Last Activity: 2 Days Ago Has been a member for 5-6 years. Has a total post count of 313. Received thanks 29 times, giving thanks to others 12 times.
    Hello all.

    Right, after the reasonably successful mill build, I've decided that I need a CNC lathe. Nothing too big or clever - heh, in all honesty I'm struggling to think what I'd make with it, but no doubt it'll come in handy at some point.

    The control electrics are pretty much sorted as I'll use my mill box to drive the steppers, so essentially I'm after building a couple of short linear stages (1605 ball-screws, 20mm profile rails), populating one of 'em with a tool-post and getting hold of a spindle/chuck - probably from a lathe manufacturers spares section (think Warco etc.) I've not even thought about thread cutting as yet, although it would be a very cool thing to be able to do...

    Materials to turn: 6082 mostly, brass, steel perhaps. Small scale stuff.

    I did start out thinking about a conversion until I saw this video the other day:

    https://www.youtube.com/watch?v=Y1IDHIcyHLY

    Excellent. Apart from the mind-blowingly ace turret, these are the lines along which I'm thinking.

    Do-able? Any advice/links to other builds of interest?

    All the best.

    Wal.

  2. #2
    Nice looking machine and pretty simple design, apart from the turret you mention, although you would definitely have to include that. I did notice there is no tailstock, are you planning on fitting one ?

    Would it be worth considering at this stage to allow adaption to a 4th axis cnc with router ?
    Last edited by EddyCurrent; 15-10-2014 at 08:54 PM.
    Spelling mistakes are not intentional, I only seem to see them some time after I've posted

  3. #3
    Wal's Avatar
    Lives in Stockport, United Kingdom. Last Activity: 2 Days Ago Has been a member for 5-6 years. Has a total post count of 313. Received thanks 29 times, giving thanks to others 12 times.
    It's pretty cool, eh?

    There are plans out there for that turret, although my efforts will be more along these lines:

    https://www.youtube.com/watch?v=hnSqy0oKyTQ

    Yes, I wondered about the tailstock. Bearing in mind this will be for small scale stuff, is it essential?

    Wal.

  4. #4
    Quote Originally Posted by Wal View Post

    Yes, I wondered about the tailstock. Bearing in mind this will be for small scale stuff, is it essential?

    Wal.
    their dead handy for stopping skinny work pieces bending during cuts. Depends how much they stick out of the chuck i guess and also being cnc you can always do the boring thing of taking it down in short steps

    Stuart

  5. #5
    Hi Wal
    This might be worth a read.
    http://makezine.com/projects/the-mul...lathemilldrill
    regards
    Mike
    Last edited by mekanik; 02-01-2015 at 01:50 PM.

  6. #6
    Quote Originally Posted by mekanik View Post
    Hi Wal
    This might be worth a read.
    http://makezine.com/projects/the-mul...lathemilldrill
    regards
    Mike
    It's like that old saying about a lathe being the only tool that can make itself.

    Or why buy it for $5 when i can make it for $50 ;)

    Stuart

  7. #7
    Quote Originally Posted by mekanik View Post
    Hi Wal
    This might be worth a read.
    http://makezine.com/projects/the-mul...lathemilldrill
    regards
    Mike
    Ah, the "Yeomans Technique", but with concrete!
    Obviously it's a technique of "Not Quite Using The Quoted Technique"

    You can't even weigh that in, at least Gingery's designs had that small advantage ;-)

    - Nick

  8. #8
    Frankly I would start with one of the small Sieg lathes, also sold under other names, rather than try to make your own if you don't already have a lathe. But not too small. You get a reasonably accurate bed, spindle and slides as well as the motor drive. Backlash is not nearly so critical in a lathe so you can live with the normal feed screws though ballscrews are nice to have. It is easy to underestimate the rigidity you need for a lathe as well as the fit of the slides if you want to turn anything metal. Lathes are the essential machine tool.

  9. Quote Originally Posted by JohnHaine View Post
    Lathes are the essential machine tool.
    Agree, as long as the part is small enough a sliding table mounted vertically on the cross-slide allows you to mill things. It's what I did before I got a mill. For simple stuff you don't even need a table, a right-angle mount will do, tedious to move workpiece manually but doable

  10. #10
    Hi Guys
    The intention of my post was just to highlight the use of concrete as a solid base for construction not to construct the lathe shown. a couple of lengths of 25mm square steel bar and a small quantity of rebar and a simple box mould would give you a solid base on which to mount a couple of Hiwin Rails.
    I have seen on superb gantry mill manufactured this way(sorry can't find the link) but this is something similar.
    https://www.youtube.com/watch?v=fDiEi2bOXgs
    Regards
    Mike
    Last edited by mekanik; 03-01-2015 at 12:11 PM.

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