It would be interesting for someone to use HalScope and start rotating the turret and graph the magnetic sensor outputs.I think that they wont be perfectly spaced, it will be close but once I had all stations to work but one.(That was without the stop) That is why it is important to fire the stop before the motor stops that way it wont matter if the sensor is a little off on one station.
Terry ----- Original Message ----- From: Ian McMahon <facetious....@gmail.com> To: Enhanced Machine Controller (EMC) <emc-users@lists.sourceforge.net> Cc: Sent: Saturday, April 21, 2012 12:26 PM Subject: Re: [Emc-users] Hardinge HCNC Retrofit/Rebuild I have somewhat unreliable tool changes as well. Sometimes it'll miss the change entirely and spin two or three revolutions before the ladder times out. Sometimes it seems like it pops the stop too early, and catches the turret in the wrong position. Often I'll hear what sounds like the stop popping early and it'll make the correct change, but I'll hear it whack past the previous station. I'm going to try adjusting the magnet and see if that helps. On Apr 21, 2012, at 1:17 PM, Kirk Wallace wrote: > On Sat, 2012-04-21 at 09:17 -0700, Terry Christophersen wrote: >> With dependable tool changes on a HNC. the stop latch (under the cover on >> the operator side of the carrage) >> is usually the thing to get right.Adjustments are made by removing the long >> black cover on the right >> side of the carrage.Under here there is a round plug with a hex socket,BUT >> remember to loosen the >> lock set screw that comes down from the top. >> If the turret works once or twice correctly then your problem is more than >> likely mechanical rather than >> computer related. >> A combination of the magnetic sensor and the stop cushion is more than >> likely the issue. >> What I do if I had to remove the sensor for some reason is try to get the >> turret to work as >> best as you can without the stop cushion(just to make sure the sensor is >> very close to working) >> then fine tune with the stop cushion. >> It takes a little while but once you get the stop working correctly the >> turret will be 100 percent reliable >> >> Terry > > On mine, I loosen the screw for the magnet then note the actual tool > position. I rotate the magnet forward (I forget which way) until the > tool number matches the actual position and continue until the number > changes to 0 or the next tool number. I back off a little to get the > proper tool number back again. This way the logic can make a match early > enough to activate the stop pawl in time. If the match isn't done in > time, the table continues to rotate. > > See here for the lock screw location: > http://www.wallacecompany.com/cnc_lathe/HNC/maint_man/ > > In case you haven't heard me say it before, if your seals are over three > years old they should be replaced (or at least checked that they are > still soft and without cracks). It made a big difference on my lathe. > > -- > Kirk Wallace > http://www.wallacecompany.com/machine_shop/ > http://www.wallacecompany.com/E45/index.html > California, USA > > > ------------------------------------------------------------------------------ > For Developers, A Lot Can Happen In A Second. > Boundary is the first to Know...and Tell You. > Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! > http://p.sf.net/sfu/Boundary-d2dvs2 > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
