Re: why so few cnc lathe conversions?

Aaron,
Thanks for the feedback.. I read it with both a serious mind and a
laughing attitude. thanks for the reality check

jeffe

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "industrialhobbies" <admin@i..
.> wrote:

> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "jlsmith269"
> <jlsmith269@y...> wrote:
> > I am wondering why there are so few lathe conversions vs mills?
> Most folks do a mill because they are simply more popular.
>
> >
> > I bought a frejoth 13x37 gearhead, with crashed threading gears...
> the
> > machine MIGHT have had 10 hours on it, before it was crashed.
> >
> > My plan it to stick some 360oz/in on the x, y, and y, and drive
> this
> > thing as a super tight lathe.
>
>
> You'll need to gear them down, mostly the Z.
>
> more than likely you'll do better with a stepper (bigger the better)
> for the Z a reduced servo for the X
>
>
>
>
> The runout of the headstock is very
> > small, and I think I can do this for
>
> >
> > 3x360 motors with encoders(250) Your price is a little low (Guess
> $500 at least), unless you're buying some seriously questionable
> motors.
>
> > xxx? drive (200) Geckos are $115 each you'll need at least 2
> > power supply , pc based? 50 PC supplies aren't designed for this
> and will give poor performance at best, mostly motors this size.
> (guess $250)
> > cables and wiring, 200? and nema enclosure(s) and other small
> stuff about $300 total maybe less with a used PC case.
>
>
> Ball screw and preloaded nuts $500 (if you're gonna do it, do it
> right)
>
> > 700 bucks, before gearing?
>
> I'm at $1780 so far and counting
>
> > Speaking of gearing, do you guys make your own gear drives or buy
> > them? If buy them, where?
>
>
> I make and sell the gear drives (universal servo drive will cover a
> lathe of this size)
>
>
> And a big stepper with direct drive for the Z.
>
>
> Not to burst your bubble, sorry.
>
> Just so you know CNC stands for Cash Not Credit.
>
> Thanks
> Aaron Moss
> www.IndustrialHobbies.com