Re: Lathe Retrofit.. Threading?

Thanks!
Sounds like it's a bit easier and more straight forward than I had feared ( I tend to over
complicate things, heh heh...).
I'm joining that group in another window now.
Paul F.

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Terry Owens" <terry@o...> wrote:
> Hi,
>
> This subject is well covered by the TurboCNC list. If you join you will have
> access to the files section where you should find a circuit diagram on how
> to do threading pickup.
>
> Basically it is just a light source and a pickup that goes high once a
> revolution. TurboCNC takes care of the rest via a G-Code instruction.
>
> Regards,
>
> Terry
>
> > Either way, I DEFINITELY want to be able to thread on it!
> >
> > I"m not at all clear on how exactly to get it to pick up the same spot on
> sucessive passes
> > of thread cutting.
> >
> > I've sort of gathered that some kind of encoder on the spindle is
> needed... but I don't
> > know what kind, and I don't know how to connect it to a controller (for
> example, the
> > Gecko stepper controllers).
> >
> > What kind of encoder are we talking about, and is there a standard way to
> provide the
> > controller (or computer) with the feedback needed to cut threads?
> >
> > Or should I retrofit my Mill-Drill first?