Yes - acme for z. (No key way). We need to make covers for x. It would be nice to get a ball screw for z but have not found one yet. The acme will work fine for now.
On Mon, Apr 18, 2022, 6:54 AM gene heskett <ghesk...@shentel.net> wrote: > On Monday, 18 April 2022 04:48:37 EDT John Dammeyer wrote: > > I was asking Sam. From his video it looks like ACME. > > Yup, looks like the OEM screw complete with keyway. Looks like a Ball on > x though. And its wide open to be wrecked by swarf. > > Needs a pair of smaller bellows similar to what I did for z on the > Sheldon. Cheap 1450mm long c7 grade screw, works good enough for the > girls I go with. Under $200 delivered on my front deck. If its off by the > C7 grade specs, I haven't found where yet. I bought a 12" digital caliper > & checked the first foot from the chuck, its as accurate as the caliper. > I'm not equipt to do interferomter measurements. > > > > -----Original Message----- > > > From: gene heskett [mailto:ghesk...@shentel.net] > > > Sent: April-18-22 12:59 AM > > > To: Enhanced Machine Controller (EMC) > > > Subject: Re: [Emc-users] Because I can't seem to finish anything... > > > Nebel lathe conversion.> > > > On Sunday, 17 April 2022 22:19:58 EDT John Dammeyer wrote: > > > > Nice! > > > > > > > > Was the Z axis lead screw also a ball screw or did you leave that > > > > as > > > > ACME? Has it an anti-backlash nut if still ACME? John > > > > > > Who are you asking John? > > > > > > > > -----Original Message----- > > > > > From: Sam Sokolik [mailto:samco...@gmail.com] > > > > > Sent: April-17-22 6:47 PM > > > > > To: Enhanced Machine Controller (EMC) > > > > > Subject: Re: [Emc-users] Because I can't seem to finish > > > > > anything... > > > > > Nebel lathe conversion. > > > > > > > > > > Mark - I will have to use that as an excuse.. :) > > > > > > > > > > 2 axis moving! > > > > > > > > > > https://www.youtube.com/watch?v=tItdEEDYy2g > > > > > > > > > > On Sun, Apr 10, 2022 at 11:10 AM Mark Johnsen <m...@ijohnsen.com> > > > > > > wrote: > > > > > > Cool! > > > > > > > > > > > > On a side note, I just finished listening to Walter Isaacson's > > > > > > biography on Leonardo Da Vinci and wanted to inform you that > > > > > > you're in good company because he had serious issues finishing > > > > > > projects. Of course, humanity got the worse end of that by him > > > > > > not publishing his work. But, when you start to dwell on a > > > > > > project that you haven't finished, just think, "Oh yeah, > > > > > > Leonardo > > > > > > didn't finish many of his projects either." > > > > > > > > > > > > On Sat, Apr 9, 2022 at 7:25 PM gene heskett > > > > > > <ghesk...@shentel.net> > > > > > > wrote: > > > > > > > On Saturday, 9 April 2022 21:27:26 EDT Sam Sokolik wrote: > > > > > > > > X is almost ready to test... > > > > > > > > > > > > > > > > https://photos.app.goo.gl/GzyjvC49J2rTXyaG8 > > > > > > > > > > > > > > Looking good Sam, similar to what I did to my Sheldon, but my > > > > > > > motor mount is a sliding plate on the front of a much bigger > > > > > > > 1/2" apron so I can screw drive the belt tension, and with > > > > > > > stepper/servo's, only a 2/1 ratio stepdown. X speed max is > > > > > > > just > > > > > > > over 60" a minute with a 2NM 3 phase stepper motor. The rest > > > > > > > of > > > > > > > my apron has the encoder dials to drive it by hand. Seemed > > > > > > > the > > > > > > > ideal place to put them. Put them near where the cranks used > > > > > > > to > > > > > > > be. Feels natural. I sealed up the tunnel the x screw is in, > > > > > > > top and bottom so swarf can't get to it unless its past > > > > > > > center > > > > > > > going in. And I put bellows on the z screw on both sides of > > > > > > > the > > > > > > > nut for its swarf protection. I even drilled two of the nuts > > > > > > > 6 > > > > > > > holes all the way thru so rapid z movements could let the air > > > > > > > get from one bellows to the other w/o sucking in > > > > > > > contaminents. > > > > > > > > > > > > > > > On Thu, Apr 7, 2022 at 8:18 AM Sam Sokolik > > > > > > > > <samco...@gmail.com> > > > > > > wrote: > > > > > > > > > Most likely it needs that movement because it can spin 30 > > > > > > > > > + > > > > > > > > > inches ;) > > > > > > > > > > > > > > If it can spin 30", what is the max spindle speed? > > > > > > > > > > > > > > > > sam > > > > > > > > > > > > > > > > > > On Thu, Apr 7, 2022 at 5:46 AM andy pugh > > > > > > > > > <bodge...@gmail.com> > > > > > > wrote: > > > > > > > > >> On Wed, 6 Apr 2022 at 20:22, Sam Sokolik > > > > > > > > >> <samco...@gmail.com> > > > > > > > > > > > > wrote: > > > > > > > > >> > The cross slide has around 17 inches of travel... > > > > > > > > >> > Crazy.. > > > > > > > > >> > > > > > > > > >> For gang-tooling perhaps? > > > > > > 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 > > . > > > 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
