On Thursday 28 May 2020 13:55:28 andy pugh wrote: > On Thu, 28 May 2020 at 17:17, Gene Heskett <ghesk...@shentel.net> wrote: > > 5; using new printer, make a 2 step pulley with recesses for a pair > > of ball bearings to turn on #4. Tooth count of larger step of this > > pulley so it clears the mills table,(and possibly the worm shaft) > > but will need an offset outward to clear flange of worm shaft, about > > 5/16" IIRC. Motor mount offset to align belt. > > The pulleys coaxial with the rotation is a neat idea. > But how much gear-own do you need? > > I ran my BS0 with direct drive and a tiny little servo (1Nm?) and it > was pretty much OK.
But did you move it while cutting, like a hypoid gear might need? Worms want to lock up under load. > > You might find that 15T on the motor shaft does not leave you enough > hub to figure out a mounting method. I hadn't considered that, thanks Andy. And I just measured the thickness of the worm flange, almost 11mm. And the edge of that flange may actually interfere with a 3/8" bolt in the center dimple, so I may have to remove it again and put a scallop in its side. Given the forces involved when cutting and moving at the same time, I'm not really comfy with a smaller bolt and no bracing flange. Could lead to putting it together, mark it to remove interferring material, then reassembling in the correct order. Which is worm carrier last. Thanks again. 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) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
