On Saturday 01 December 2007 09:39, Kirk Wallace wrote: > It would be nice to be able to do some milling operations with the > lathe, requiring a spindle encoder with around 50,000 pulses per > revolution to get a .0005 resolution on a four inch radius. Does anyone > know how modern lathes are set up for milling operations. Are there two > systems including two spindle motor/drives and encoders? One for lower > resolution high spindle speeds and another for low speed high accuracy? > Does anyone have a brand new HAAS or Mori Seki I can take apart to find > out?
it will be here in a week or two but nobody gets to take it apart just yet :) from what I've seen the newer ones use the encoder built into the brushless motor with one track for high speed low resolution and another track for the high resolution positioning ,both etched onto the same disk but with separate sensors maybe you could use a single track but have different sensor resolutions one reading 4x quadrature and another as a 1x tach and share the index an interesting setup I saw on a twin turret mill/turn machine was an angle plate on the lower turret used as a mill table and live tools in the upper turret ,the main and counterspindles of the lathe were left out of the program and it was used just like a vertical mill I cant remember if both turrets had a Y axis or if it was just the upper one Brian -- "Nemo me impune lacesset" ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
