if there are many index signals during motion, then use a 'near home' swx to identify which one and home in one direction the 'near home' switch should reduce the velocity so the index is reliable. i used a 90 to 1 gearing on a 3R Caxis with a prox switch and dog to identify which of 90 indexes was the correct index. the dog was simply a sheet metal flag on the rotating bit, the prox was in a hole thru the outer casting keep the index in center of any dog to dog cycle hth tomp
On Wed, Dec 29, 2010 at 11:00 PM, Jon Elson <el...@pico-systems.com> wrote: > Igor Chudov wrote: >> Oh, and one more thing: the "index" signal on the encoder, does not mean a >> full turn in back gear. It means -1/8 of a turn. Will that be a problem? >> >> > The only problem is that you won't be able to re-tap a particular hole, > as the tap will > enter with one of 8 possible orientations. But, I'm too timid to try > anything like that, > anyway. This would be unacceptable on a lathe, where multi-pass > threading is > common. But, I don't really see it as a particular problem for rigid > tapping on the > mill. > > Jon > > ------------------------------------------------------------------------------ > Learn how Oracle Real Application Clusters (RAC) One Node allows customers > to consolidate database storage, standardize their database environment, and, > should the need arise, upgrade to a full multi-node Oracle RAC database > without downtime or disruption > http://p.sf.net/sfu/oracle-sfdevnl > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Learn how Oracle Real Application Clusters (RAC) One Node allows customers to consolidate database storage, standardize their database environment, and, should the need arise, upgrade to a full multi-node Oracle RAC database without downtime or disruption http://p.sf.net/sfu/oracle-sfdevnl _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
