Thanks
Valerio Bellizzomi On Fri, 2017-02-03 at 10:50 -0600, Jon Elson wrote: > On 02/03/2017 01:59 AM, Valerio Bellizzomi wrote: > > http://www.infodelta.it/foto/film/filettatura%20interpolata.mp4 > > > > > This is thread milling. You use a cutter that looks sort of > like a tap, but the rows of teeth are actually rings, not a > helix. You place the tool into a hole that is large enough > for it to pass straight through, and then move toward the > side and preform a helical move. Generally, you plunge > straight to the bottom of the hole and then make the helix > back out in Z, > this climb mills the thread. You make slightly more than > one turn of the helical move, and the entire hole is threaded. > > Pretty much all modern CNC controls can do helical > interpolation. > > thread mills are expensive tools, and can only do one thread > pitch, although they can be used for a range of thread > diameters. There is an alternative, a single row thread > mill. This can do a wide range of thread pitches, but as it > only has one row of teeth, you need to make the helix follow > the entire number of turns of the thread. But, for special > threads where you don't have either a conventional tap or a > thread mill, and can't fit the part in a lathe, it can make > it possible to put the thread in. > > Jon > > ------------------------------------------------------------------------------ > 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
