And here is a Capto profile being ground; https://www.youtube.com/watch?v=ALRAiiMxTnk
Roland On Tue, 2 Jan 2024 at 18:02, gene heskett <ghesk...@shentel.net> wrote: > On 1/2/24 08:17, Adam McLeod wrote: > > Fortunately, Sandvik standardized the Capto shank via ISO 26623. It is > > called a "Polygonal taper interface with flange contact surface". If > > you search "capto iso polygon shank" in duckduckgo search engine right > > now, you may find that there is a "preview" of that standard in a pdf > > that probably has the details you're looking for near the top of the > > search results. > > > > On 2024-01-01 9:04 p.m., Sam Sokolik wrote: > >> boy - there doesn't seem to be much info on that shape.. It does look > >> like > >> it could be machined/ground with spindle synced motion.. > >> > In that event, stretch the definition of spindle to include drives > similar to the A drive on the G0704, or the B drive on my 6040. > > Those are both 3 phase stepper/servo's of 3nm power, both driving an > rvs30 series worm drive for a 5/1 reduction. These worms do have a half > degree of backlash that may not be wholly consistent, but I'm carving > buttress threads with them in synchronized motions, works fine. Top > speeds of something in the 400 rpm range. At a speed your Z drive can > track is a Sunday drive for that combo. > > We have the trig functions, and a simple multiply based on the > remainder(mod) could easily return a triangular shape if its a sine. I'm > positive I could come up with something on the 6040 doable with its 24k > rev spindle and a CBN wheel. Not fast mind you, but doable. CBN is > gawdawful $$$ and fragile in shapes and sizes I've found but it will > "get the job done". It is much like diamond but cuts HSS w/o destroying > both as there is no carbon in it. Leaves no wire edge to be easily > broken off and dulled, HSS is finished like a shaving mirror. All it > should take is somebody better at math than me. > > > > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > Cheers, Gene Heskett. > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author, 1940) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > > > > _______________________________________________ > 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
