Re: [CAD_CAM_EDM_DRO] cutting threads on lathe

We are running a CNC lathe with TurboCNC. It has a G33 Gcode that
allows allows threading. It works well, very well. Very fast too, ie
we are threading down to 14 TPI at 750-1000 RPM. The limiting factor to
threading speed is how deep you can take the cuts.

The issue I see with your threading is the thinness of your material. I
think you'll have to set up a steady rest to keep it from bowing out,
depending if you are threading the whole 12" or just the ends. (Not
clear to me from your statement.)

You could thread shorter sections (ie ends) of said material in the mill
using TurboCNC and its thread *milling* commands. CNC equipment is
outstanding these days...

We've got an autofeed system half completed for our lathe, but it feeds
long lengths of bars, not 12" pieces. Maybe you could buy long lengths
and cut them off to length.

Kim

On Mon, 2003-10-06 at 09:53, fineartlight 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@...
>
>
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@..., timg@...
> Moderator: pentam@... indigo_red@... [Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> 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
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
--
Kim Lux <lux@...>