Curtis W. Moore wrote: > I have been using Turbocnc as a control on my lathe. Turbocnc need just > one pulse per rev to to lathe threading. Is there a way to do this with EMC2? > >
Not a the moment. Many folks (me among them) believe that you really need quite a few counts per revolution to make good threads. If you only have one pulse per rev, you are counting on the spindle to hold exactly the same speed over each revolution, without varying even a tiny bit under cutting load. That said, lots of people get "acceptable" results using one count per revolution with other software. It is technically feasible to write a HAL component that takes a once-per-rev index pulse and generates spindle position feedback that looks like a higher resolution encoder. This will work ONLY if the spindle holds a constant speed over many revolutions. If somebody writes that component, EMC could use it to do once-per-rev threading, with the understanding that the thread quality is only going to be as good as the spindle speed stability. Regards, John Kasunich ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
