Igor Chudov wrote: > I have, on my mill, a 3 phase spindle motor on a VFD, driving the spindle > with a VS belt. > > I also have an encoder on the spindle. > > I wonder if, for any kind of a yet-unknown purpose, I would want to orient > my spindle in a particular way with precision. > > If I did want that, could I buy some kind of a AC servo drive or something > like that, and use encoder feedback to orient my spindle? > Yes, to some extent even a standard VFD can do this. It depends on what you want. If you want to orient the spindle for tool change, that should be easy. If you want to orient a cutting tool at a particular angle for cutting splines or something, ie. holding a tool at a particular angle against cutting forces, then probably not.
A flux vector drive could do this. Jon ------------------------------------------------------------------------------ What You Don't Know About Data Connectivity CAN Hurt You This paper provides an overview of data connectivity, details its effect on application quality, and explores various alternative solutions. http://p.sf.net/sfu/progress-d2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
