Hello Guest it is August 10, 2020, 08:34:36 AM

Author Topic: multi lead threading  (Read 3478 times)

0 Members and 1 Guest are viewing this topic.

multi lead threading
« on: April 13, 2007, 12:13:29 PM »
I tried going through the wizard in Mach 3 lathe, and could not find an option for multiple leads.

What is the best/easiest way to program 2,3, or 4 lead threads?

Can I use the wizard and give it a different starting Z? If I'm doing a 2 lead thread that gauges at 36 TPI, but is cut with 18 TPI, would I start 1 lead at Z0, and the next at Z .0277 for example, and just cut/paste the parts of the program I need together?

There is also a G-code that will make 1 threading cut, but seems really tedious, especially with 3-4 lead threads. I forget the exact G-code, but is that my only option for multi-lead threads?

Any ideas?
Re: multi lead threading
« Reply #1 on: April 13, 2007, 03:47:21 PM »
On a lathe, use a 36 tpi chaser and cut at 18 tpi ?

Ian

Offline Graham Waterworth

*
  • *
  •  2,114 2,114
  • Yorkshire Dales, England
    • View Profile
Re: multi lead threading
« Reply #2 on: April 13, 2007, 06:07:36 PM »
When I do multi start threads I use the offset Z method.

Graham.
Without engineers the world stops
Re: multi lead threading
« Reply #3 on: April 13, 2007, 06:12:15 PM »
I'm not real experienced with chasers, but I don't see how their use would give me multiple leads.

Thanks Graham, I'll use that.