On Friday 24 July 2020 04:26:47 andy pugh wrote: > On Fri, 24 Jul 2020 at 08:33, Gregg Eshelman via Emc-users > > <emc-users@lists.sourceforge.net> wrote: > > For gear cutting every pitch or module has either one hob that cuts > > any number of teeth, which requires a machine able to synchronize > > rotation of the hob and blank, or a set of 8 different single tooth > > cutters, each of them marked with a range of the number of teeth on > > a gear they're suitable for. For Diametral Pitch gears there are > > also two different Pressure Angles, 14.5 or 20 degrees. Thus a > > complete DP set has 2x the number of cutters than there are for > > metric Module or Mod gears. > > Not all Module (metric) gears are 20 degrees PA, sometimes you find > 14.5. (And, technically you could quote metric DP or imperial Module. > A 14DP inch gear is a 0.071428571428571 inch Module gear) > > Did my list of suppliers of involute gear cutters make it to the list? > The conversation continued round it as if the question remained > unanswered.
I don't recall seeing it Andy. 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
