On 09/14/2012 12:47 PM, Stephen Dubovsky wrote: > This all comes from thinking about manual machines w/ DROs. There are > combiner boxes avail that take a scale on both the quill and knee and > add/subtract them to feed into the DRO display. Some newer ones can > do it internally I think. So it doesn't matter which you move, the Z > axis display on the DRO reads the total. Move the quill up 2" and the > knee up 2" and the Z display stays the same. You don't need to > touch-off again, and again, and again, ...
Stephen, I'm interested in what you come up with. The mill I work on has a knee with a ballscrew, connected to a crank and a motor drive, so I think an encoder on the screw would do nicely. As it is I sometimes put pauses in the Gcode with a message to the operator to move the knee up or down by a certain amount. After the pause it does the tool change, followed by a change to a different coordinate system to handle the new knee position. It's a bit crude but works. Karl ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://ad.doubleclick.net/clk;258768047;13503038;j? http://info.appdynamics.com/FreeJavaPerformanceDownload.html _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
