(Off topic, but interesting) On Tue, 14 Jul 2020 at 02:11, Gregg Eshelman via Emc-users <[email protected]> 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
