Re: [CAD_CAM_EDM_DRO] Re: cutting threads on lathe

There might be faster ways, but a small CNC lathe will easily cut those
threads. Pretty quickly too, loading aside.

Kim

On Mon, 2003-10-06 at 17:03, fineartlight wrote:
> I only want to thread 1/4" or about 5 or 6 threads. My exising
> suppliers quality is terrible and I have to cut off the extra threads.
>
> Thanks for the input.
>
> David.Munson@...
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "doug98105"
> <doug.rasmussen@c...> wrote:
> > David,
> >
> > You want to thread the full 12"?
> >
> > 1. A CNC lathe wouldn't have much of an advantage for this job
> over
> > a machine you could build for full length threading since it would
> > have to be a die head job. CNC's are good at single point
> > threading, you can't single point 12" of thin wall tubing, though.
> >
> > 2. If you're threading the full length a "small" CNC wouldn't do
> > it, they don't have that much travel. Yes, you could auto feed raw
> > tube stock, thread, cutoff, and feed out again. If you only need a
> > short thread on one or both ends a "small" CNC lathe could do that
> > by single point threading one end, feed out 12", plunge thread the
> > other end, part off.
> >
> > Can't you buy this material already threaded? I would think you'd
> > have to get into horrendous quantities to justify the expense of a
> > CNC machine.
> >
> > Not sure exactly what an Automat is, I suspect it's similar to a
> > Hydromat which could do this type work, we're talking very, very,
> > big bucks.
> >
> > Incidently, in my shop we do lots of end threading on 21" long
> > rods. This is done on a small CNC lathe with die head using manual
> > loading. We've got the process down to four a minute for a 1" long
> > 1/4-20 thread. Since these orders are usually for about 3,000
> parts
> > I've looked at all sorts of auto loading mechanisms and haven't
> > found any method as reliable as manual loading.
> >
> > Doug
> >
> >
> >
> >
> >
> >
> >
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "fineartlight" <yahoo@d...>
> > wrote:
> > > I am a small lighting manufacturer with one CNC mill running and
> > now
> > > considering building or purchasing a lathe to thread 12" long
> > 3/8"OD
> > > 1/8 IPS tubing. Could be thin wall steel, brass or aluminum.
> > >
> > > Questions are:
> > >
> > > 1. With a lathe is CNC the way to go for threading and cutting?
> > > 2. Is a small cnc lathe with a auto feeder a realistic
> possibility?
> > >
> > > What are my other options for threading the tubing? I have seen
> > > something called an Automat ? What is it?
> > >
> > > David.Munson@F...
>
>
>
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