Re: [CAD_CAM_EDM_DRO] Re: Lathes for retrofit

----- Original Message -----
From: "ballendo" <ballendo@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, October 30, 2003 8:04 AM
Subject: [CAD_CAM_EDM_DRO] Re: Lathes for retrofit


> James,
>
> I'm talking about 9x20 size machines; in this case the Bv20 series,
> which is distinguished from the "typical" 9x20 by its gear driven
> spindle, and lack of a Quick change gear box and carriage feed by
> worm drive on the leadscrew.
>
> Hope this helps,
>
> Ballendo
>
> P.S. One strong advantage of the typical 9x20 not yet mentioned is
> that you can get one at HF for about 550 bucks... (so it may be worth
> removing the "extras" to make a CNC lathe)
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "James Cullins"
> <jcullins@c...> wrote:
> > Are you talking about the CQ6120X320
> > LATHEMASTER 8 X 14 MINI ?
> > Jim
> > ----- Original Message -----
> > From: "ballendo" <ballendo@y...>
> > To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> > Sent: Thursday, October 30, 2003 7:26 AM
> > Subject: [CAD_CAM_EDM_DRO] Lathes for retrofit
> >
> >
> > > David,
> > >
> > > Snips, inserts below:
> > >
> > > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "David A. Frantz"
> > > <wizard@e...> wrote:
> > > >As far as actual conversion what advantages foes the Lathemaster
> > > >lathe provide over the others? It does seem to be difficult to
> > > >get comments form people concerning the Lathemaster lathe. The
> > > >are always plenty of comments on how to get the HF and Grizzley
> > > >lathes running but very little on the Lathemaster.
> > >
> > > The chief advantage of the lathemaster for CNC is what I
> mentioned;
> > > there is less stuff to remove and/or work around to complete the
> > > conversion. The reason there is not much about it on my 9x20Lathe
> > > group is that for manual use, the "std" 9x20's are far superior,
> > > except for a steel only shop where the lower speed at teh bottom
> end
> > > is appreciated. Less so with modern tooling...
> > >
> > > Which brings me to the next consideration for a CNC conversion,
> the
> > > drive train of a CNC lathe is likely going to be an upgrade to a
> VFD.
> > > A lathemaster has spindle gears which may allow for more
> flexibility
> > > when using a cheap VFD setup (I'm not a fan of cheap Import gear
> > > trains, so I'd just drive it direct.) But again , the Lathemaster
> has
> > > less "junk" in the way to remove(Can we just call it a Bv20 style?
> > > The "lathemaster" is just a popular version OF the Bv20.)
> > >
> > >
> > > >It is interesting your comments on the manual aspects of the
> > > >Grizzley, HF and similar lathes. That is all well and good
> but if
> > > >you really want flexibility, even for manual operations, the
> > > >rational thing to do would be to motorize those axis. Hardinge
> > > >has been doing this for just about forever on their tool room
> > > >lathes, unfortunately not direct drive but very flexible none the
> > > >less.
> > >
> > > You're preaching to the choir here<G> My 9x20Lathe group is the
> > > opposite of here; nearly entirely manual users, so we tend to stay
> > > OFF the subject of CNC, the same way here we stay OFF the subject
> of
> > > manual machining... (Personally, I like and use both manual and
> CNC,
> > > but not on the same machine! I still think preserving the
> handwheels
> > > on a CNC retrofit is a poor choice.)
> > >
> > > > Thanks
> > > > Dave
> > >
> > > You're welcome.
> > >
> > > Ballendo
> > >
> > >
> > >
> > >
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> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
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