On Fri, 2009-03-20 at 23:42 -0500, Jon Elson wrote: ... snip > have such a problem. Kirk Wallace is also using a UPC board on a lathe, > but I don't know if he is doing a lot of threading. Maybe you should > send me your threading program and I will try it here on the minimill. > Is your machine natively defined in mm units or inch units? It > "shouldn't" make a difference, but I'm pulling at straws, here. > > Jon
Sorry Jon, I haven't done allot of threading. I have had no trouble, other than early in the conversion, I had a spindle encoder noise problem (solved with VFD filter) and finding the proper acceleration tuning to deal with lead-in oscillations. I don't recall having a runaway, other than when I had the buggy homing software version. I wonder if there is a way to have the software predict what a reasonable move would be and compare this with what the sensors indicate. In other words, for a particular command, it might be unreasonable to move above a certain rate and distance to complete the block. Or, maybe it could be user assigned: G?? (safe zone) X1 xxx Y1 xxx Z1 xxx X2 xxx Y2 xxx Z2 xxx J (any max. distance from block start) xxx ... G?? (safe zone end). ------------- Kirk http://www.wallacecompany.com/machine_shop/ ------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
