Re: cutting threads on lathe

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...