Yes. That's way faster tapping than I've done. I'm going to have to try tapping that quickly just to keep up. ;-) But I'm not so concerned about being able to tap slowly. Just that I want to see the behaviour and how the trajectory planner handles hand turning the spindle and have the Z axis track. Now seeing the waveforms from the velocity out over the MESA board I can see why the Z axis would have that start/stop feel. John
> -----Original Message----- > From: Sam Sokolik [mailto:samco...@gmail.com] > Sent: August 14, 2023 9:09 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Rigid tapping > > Would you ever be tapping that slow? If you are - then yes - higher > resolution or try interpolation.. (Will that be bad in rigid tapping > reversals? Threading on a lathe interpolation works great - but that is > one direction...). The green machine had a gear tooth encoder - about 40 > ish teeth. I never tried running it that slow rigid tapping - but I did > initially use it for non-circular boring. It did OK at around 10 to 50 rpm > but you certainly could see the resolution in the cut.. I did rigid tap > with it - but pretty high rpm with no issues.. > > https://youtu.be/F7QulGiMt20 > > On Mon, Aug 14, 2023, 10:50 PM Chris Albertson > <albertson.ch...@gmail.com> > wrote: > > > I think with encoders that are not symmetric 50/50, you need to look only > > at the leading edges. (Or only at the trailing edges) > > > > Yes,this cuts the resulution in half but removes the nose. I think for > > somethig with a lot of rotational inertia, like a spindle, you can use > > interpolation to get all the resolution you need. > > > > > > > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
