On Sun, 15 Jan 2012, a...@conceptmachinery.com wrote: > Date: Sun, 15 Jan 2012 22:42:44 -0700 > From: a...@conceptmachinery.com > Reply-To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.net> > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Subject: [Emc-users] tapping problem? > > Hi > i there spindle motor and motor drive that can be better used for tapping? > Problem with use tap is that spindle motor can easy crash tap and after > that extra charge - + equipment - to remove broke tap from hole. > > Every one try to get max from each tap and many times tap that "look good" > crashed in the hole. > Where is solution? > The solution is in torque sensitive motor- motor drive system for spindle. > Example: tap 1" can hold 80 lb.ft. More than that tap will be crashed. > Motor drive that can be programmed - do not exceed 80 lb.ft , and if so > E-Stop machine. > For smaller tap torque can be programmed for 20 lb.ft for bigger tap 200 > lb.ft and etc. > Idea is clear. > Put this kind motor drive under EMC2 control and problem solved. > Is there better solution to prevent breaking tap in hole? > > Thanks > aram >
This is just a standard torque mode drive with a PID output limit applied. I do wonder is this would really help though, since the spindle inertia is sufficient to break the tap if it "grabs" A torque mode drive could possible be used another way however. Since the torque applied to is measureable (just the PID output) Having a work-per-tapped-hole figure could warn of a dull tap > > ------------------------------------------------------------------------------ > RSA(R) Conference 2012 > Mar 27 - Feb 2 > Save $400 by Jan. 27 > Register now! > http://p.sf.net/sfu/rsa-sfdev2dev2 > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------------ RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
