The +T and -T can be deviations from the actual radius in some cases, from the measured in others.
If the CMM software used allowed you to input the actual X, Y and radius, then the deviation would most likely be from the actual. Some software allows you to specify which way you want it.
If the CMM software simply located and measured the hole, then it would have to be the deviation from the measured.
Most CMM software requires you to input the X, Y and Radius (or Diameter), and the deviations output are from actual.
What kind of ways does your mill have? Square or round, roller packs or plastic lined? Is it an expensive mill?
Gene Bowen
Bob Looney wrote:
It's on my akira-Seiki mill. One year old, cut steel half its life at 700 sfm, the other half on alum at 10,000 rpm.
I circle interped the ID/OD at 10,000 @60 ipm with an old Hanita carbide 3 fl end mill. 4" ID pocket then profiled a 4.750" OD boss around the outside of the pocket. this left me with a ring of mtl that they used to cmm the ID/OD. I was told to make the ring so the servos would be going both ways.
the radius value from the cmm was 2.00044". does this mean the +T and -T are a deviation from this radius? a total of .0004" out of round? (+.00021 and -.00019)
====================================================================== To find out more about this mailing list including how to unsubscribe, send the message "info mfg-smartcam" to [EMAIL PROTECTED] ======================================================================
