On Fri, Jun 1, 2018, 13:20 Gene Heskett <ghesk...@shentel.net> wrote:
> Greetings everybody; > > I have the grub screw bore & tap working except for on glareing problem. > I am using g38.2 to measure both the length of the drill, and the tap, > and I had set the depth of the tap so it went a little into the opposing > hole on the other side of the hat, and still left some taper at the end > of the threads I could feel the grub screws cutting into for the last > half turn to tight on the taps square butt. > > But I just chose to use a 5 or 6mm tap with a square end, for blind holes > I assume. It working from the g38.2 measured length, went on thru to the > other hole and totalled the threads at the bottom of the opposing hole. > Diagnosing that I needed to stop it at least 2.5mm quicker, I put the > 6mmx1 tap in the machine, also a square ended tap, and found the threads > were usable but had to get froggy with the wrench torque to get past the > tight spot at the bottom of the hole. This after I had reduced the g33.1 > Z by 2.25mm. > > So, since I'm measuring the mounted tap at its tip, is there any quick > way to make my code compensate for the taps tip profile? > > Or do I add another var next to the tpmm to be added to the stroke, > possibly by calipering the tap tip from the tip to the first active > thread? > > IOW, how do you folks deal with this? > > Thanks for any thoughts. > I drill my pilot hole 80% of the minor diameter deeper , unless the print doesn't allow for it, I then add the measured length of the tip of the tap to my tool length and make a few test holes, adjusting tool length offset in the table until I get the desired results. > > -- > 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) > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
