there are not so many way to build thrust bearings ... one of these is with that type of lathe. Above all, I hope you enjoy doing these things.
Good work. bkt 2017-07-05 14:58 GMT+02:00 EBo <e...@sandien.com>: > Thank you BKT for your comments. I had meant in my reply that it is in > fact possible to build a conventional configured lathe which actually can > routinely do the precision required for their application, and provide some > idea of what you have to do to make this work in practice. You are right > that it is difficult measuring anything at that precision. > > > On Jul 5 2017 1:23 AM, theman whosoldtheworld wrote: > >> For my little experience as insert for late and mill seller, some late for >> bearing work with cheramic + diamond insert and air flow as lubrificant >> .... these means more or less 20° araund tool, araund bearing in working >> order, plus in most cases machines equipped with oil coolers circulating >> around the spindle and slides ... so most of the lathe concerned is kept >> at >> a constant temperature ... so the hight precision is possible ... the most >> problem regards the real measure ... if is right the working bearing is >> kostant in measure, it is not so sure that the measure obtained is the >> desired one ... in fact, it is very difficult to measure the spherical >> bearing head ... beyond the only transfer from the working area to the >> measuring chamber changes the measurement itself. >> So you do not have to be amazed at the data you bring ... above all you >> have to remember that data is collected in the field and not in the >> measurement laboratories. >> >> regards >> bkt >> >> 2017-07-04 20:39 GMT+02:00 EBo <e...@sandien.com>: >> >> I had studied the design specs for a lathe which was certified <0.000002" >>> which used oil bearings instead of air, but from what I have seen 1um is >>> reasonably doable by mere mortals <https://www.youtube.com/watch >>> ?v=sFrVdoOhu1Q>, however back in the 90's there were only a handful of >>> people that could build, tune, and run a machine that would do 20x the >>> precision. And yes, you have to temperature and hudity control the work >>> (unless the structural members of the machine are made from something >>> like >>> Sitall or Zerodur... >>> >>> >>> On Jul 4 2017 11:05 AM, Marius Liebenberg wrote: >>> >>> There are lathes that do that already. The lathe is temperature >>>> controlled and the slides run on air bearings with a tolerance of >>>> better than 2 or 3 nano meters. The job is given in 10 micron steps >>>> and I have to work the gcode from there >>>> >>>> ------ Original Message ------ >>>> From: "Niemand Sonst" <nie...@web.de> >>>> To: emc-developers@lists.sourceforge.net >>>> Sent: 2017-07-04 18:01:54 >>>> Subject: Re: [Emc-developers] Finest resolution of Lcnc >>>> >>>> Gmoccapy is not the issue, as you can add more digits to the DRO on the >>>> >>>>> settings page. But if you speak about 0.1 µm it is useless to build a >>>>> lathe >>>>> on that accuracy, as you will never be able to turn a part at that >>>>> accuracy. Just a few degrees temperature difference will destroy the >>>>> repeatability. >>>>> >>>>> Just calculate 1 Degree is 1 µm length difference on every 100 mm. >>>>> >>>>> Norbert >>>>> >>>>> Am 04.07.2017 um 17:15 schrieb Marius Liebenberg: >>>>> >>>>> The DRO's will have to be modified a bit I suppose. In order to show >>>>>> the larger travels. The max travel is about 300mm. >>>>>> >>>>>> ------ Original Message ------ >>>>>> From: "andy pugh" <bodge...@gmail.com> >>>>>> To: "Marius Liebenberg" <mar...@mastercut.co.za>; "EMC developers" < >>>>>> emc-developers@lists.sourceforge.net> >>>>>> Sent: 2017-07-04 13:59:32 >>>>>> Subject: Re: [Emc-developers] Finest resolution of Lcnc >>>>>> >>>>>> On 4 July 2017 at 12:10, Marius Liebenberg <mar...@mastercut.co.za> >>>>>> >>>>>>> wrote: >>>>>>> >>>>>>> The question I have is - will I be able to control the lathe to say >>>>>>> >>>>>>>> 0.1 >>>>>>>> micro meter with Lcnc using the Gmoccapy front end. >>>>>>>> >>>>>>>> >>>>>>> You could easily configure the machine to use microns as the base >>>>>>> unit >>>>>>> (then G20 would work in thousandths of an inch). >>>>>>> >>>>>>> >>>>>>> -- 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, 1916 >>>>>>> >>>>>>> >>>>>> --- >>>>>> This email has been checked for viruses by Avast antivirus software. >>>>>> https://www.avast.com/antivirus >>>>>> ------------------------------------------------------------ >>>>>> ------------------ >>>>>> Check out the vibrant tech community on one of the world's most >>>>>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >>>>>> _______________________________________________ >>>>>> Emc-developers mailing list >>>>>> Emc-developers@lists.sourceforge.net >>>>>> https://lists.sourceforge.net/lists/listinfo/emc-developers >>>>>> >>>>>> >>>>> >>>>> >>>>> ------------------------------------------------------------ >>>>> ------------------ >>>>> Check out the vibrant tech community on one of the world's most >>>>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >>>>> _______________________________________________ >>>>> Emc-developers mailing list >>>>> Emc-developers@lists.sourceforge.net >>>>> https://lists.sourceforge.net/lists/listinfo/emc-developers >>>>> >>>>> >>>> ------------------------------------------------------------ >>>> ------------------ >>>> Check out the vibrant tech community on one of the world's most >>>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >>>> _______________________________________________ >>>> Emc-developers mailing list >>>> Emc-developers@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/emc-developers >>>> >>>> >>> >>> ------------------------------------------------------------ >>> ------------------ >>> Check out the vibrant tech community on one of the world's most >>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >>> _______________________________________________ >>> Emc-developers mailing list >>> Emc-developers@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/emc-developers >>> >>> >> ------------------------------------------------------------ >> ------------------ >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >> _______________________________________________ >> Emc-developers mailing list >> Emc-developers@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-developers >> > > > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
