Thanks Jon. My max jog speed is 54 IPM so I should be good to give that a
try. Thanks for the test code!

On Thu, May 7, 2020 at 6:16 PM John Dammeyer <jo...@autoartisans.com> wrote:

> > -----Original Message-----
> > From: Jon Elson [mailto:el...@pico-systems.com]
> > Sent: May-07-20 3:54 PM
> > To: Enhanced Machine Controller (EMC)
> > Subject: Re: [Emc-users] Sourced from: Re: Fluctuating RPM using CUI ATM
> 10 encoder
> >
> > On 05/07/2020 12:23 PM, Dan Henderson wrote:
> > > Is there a simple test code I can run to confirm ridged tapping is
> working
> > > or even the feed rate is synchronized to the encoder feedback? Without,
> > > spindle-at-speed enabled I�ve no way to visually confirm this.
> >
> > Just try these lines and see what it does, with the Z clear
> > to move down to Z-1 without hitting anything :
> > M03 S500
> > G01 F10 Z0.5
> > G33.1 Z-0.55 K0.025
> >
> > If it stalls with the spindle running, it never saw the
> > spindle encoder trip the index-enable to off.
> > If it moves down in Z, then reverses the spindle and pulls
> > back in Z, then it is all working.
> > That will give a 40 TPI thread (assuming inch units).
>
> 500 RPM is 8.3333 RPS = 0.12 turns/second.
> Threading a 40 turns/inch hole means 0.12 inches/second or
> 12.5inches/minute.
> So you also have to make sure that your Z axis can move that quickly.
> John Dammeyer
>
> >
> > Jon
> >
> >
> >
> > _______________________________________________
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> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
>
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