I am adding poor man's trajectory planning.. (not really planning) adding the ability to add a tangent-tangent radius to the polygon.. This is so there isn't an abrupt change in direction.
The one pic shows a 0 radius vs .020 radius... The over shoot for the given spindle rpm is all but zero. On Thu, Jul 16, 2020 at 11:22 PM Sam Sokolik <samco...@gmail.com> wrote: > some close up-ish with slow mo... > > https://youtu.be/_S_bGAuTN0s > > > > On Tue, Jul 14, 2020 at 3:13 AM andy pugh <bodge...@gmail.com> wrote: > >> (Off topic, but interesting) >> >> On Tue, 14 Jul 2020 at 02:11, Gregg Eshelman via Emc-users >> <emc-users@lists.sourceforge.net> wrote: >> > >> > Used to be mechanical drive attachments for some lathes to move the >> cross slide in and out for cutting threads for taps. >> >> Yes, Holbrook used to offer a sub-speed head (clamped to the bed, >> connected to the spindle, output a speed lower by a factor of 6 on a >> coaxial secondary spindle nose) and a set of relieving equipment >> (special top slide , back power shaft, sets of cams) >> >> A mesmerising device for other lathes was developed by the model >> engineering community, the Eureka attachment. >> https://www.youtube.com/watch?v=U_kqi3dqr50 >> >> It almost seems like a shame to do it with CNC now. >> >> -- >> atp >> "A motorcycle is a bicycle with a pandemonium attachment and is >> designed for the especial use of mechanical geniuses, daredevils and >> lunatics." >> — George Fitch, Atlanta Constitution Newspaper, 1912 >> >> >> _______________________________________________ >> 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
