Re: Help Threading

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Victor A. Estes"
<emc3zach@h...> wrote:

> Hi All,
>
> Was wondering if anyone could help me with doing some external

threading on a piece of bar stock. I need to do this with my CNC
lathe (a Sherline). So I guess the big question is what x, y, and
feed values do I plug in to get a thread of 11/16th x 24 threads per
inch. To make matters worse I am using a metric lathe with metric
leadscrews. I can grind the tool bit to get the correct thread
profile, how do I do the rest.

>
> I am familiar with threading manually on a lathe with threading

gears.

>
> Any suggestions would be greatly appreciated.
>
> Thanks in Advance,
>
> Victor

Typically, 'how to..'' questions are not on topic, but in this case, I
think the how to.. is how to make the machine do the work.

One thing you will need is a way to verify spindle location. ie: an
RPM meter, that reads the spindle and feeds back to the software.

Once you have that, the question falls into the software category.

What software are you using ?

Also, as a question of topic, what is the best way to check spindle
location ?

I wanted to add an RPM meter to my lathe and can do the simple
electronics, but am not sure the best way to get it to a readout.

Dave