Andy, Is this more like what you want? https://www.dropbox.com/s/7g46vdlz2svokn7/worm2.igs
On Wed, Oct 30, 2013 at 2:47 PM, Stuart Stevenson <stus...@gmail.com> wrote: > here is a more complete model for your enjoyment/critique > > https://www.dropbox.com/s/boyfgtldlw0kw8h/BallWormex2.igs > > > On Wed, Oct 30, 2013 at 5:12 AM, Dave Caroline < > dave.thearchiv...@gmail.com> wrote: > >> Before anyone makes new rotaries, I have an interesting article from >> >> Summer school in electrical engineering, proceedings July 12 to 16 1948 >> BTH, The British Thomson-Houston Co Ltd >> Vibration and noise problems in engineering >> They were using an early spectrum analysis tool listening to the noise >> from a drive gear set made on a hobbing machine. >> >> http://www.collection.archivist.info/archive/proceedings/PR22/ >> >> see pages 60 61 and the table on page 66 >> >> The dominant error as you may see is regular error at tooth frequency >> >> A way I would put it is, if there were no accuracy errors there would >> be no sound to measure. Even the the measures they took to make the >> 360 master wheel still show up in the the result in table 1. >> >> The accuracy of a worm drive is also very important to telescope >> makers and to show the periodic error I mentioned earlier in this >> thread this page has some graphs >> http://www.pk3.org/Astro/index.htm?astrophoto_mount_errors.htm >> >> Just think how you are going to make your worm pitch match yout worm >> gear pcd to the accuracy needed. >> >> Hope it all goes well. >> >> >> Dave Caroline >> >> >> ------------------------------------------------------------------------------ >> Android is increasing in popularity, but the open development platform >> that >> developers love is also attractive to malware creators. Download this >> white >> paper to learn more about secure code signing practices that can help keep >> Android apps secure. >> >> http://pubads.g.doubleclick.net/gampad/clk?id=65839951&iu=/4140/ostg.clktrk >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > > > > -- > Addressee is the intended audience. > If you are not the addressee then my consent is not given for you to read > this email furthermore it is my wish you would close this without saving or > reading, and cease and desist from saving or opening my private > correspondence. > Thank you for honoring my wish. > Just for you NSA - think autointercourse > terrorist suitcase bomb sarin > hello > -- Addressee is the intended audience. If you are not the addressee then my consent is not given for you to read this email furthermore it is my wish you would close this without saving or reading, and cease and desist from saving or opening my private correspondence. Thank you for honoring my wish. Just for you NSA - think autointercourse terrorist suitcase bomb sarin hello ------------------------------------------------------------------------------ Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
