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...Metric
PNT2 =FEAT/POINT,CARTESIAN THEO/<0,0,0>,<0,0,1> ACTL/<[COLOR="Red"]-0.0287[/COLOR],[COLOR="Navy"]-0.0025[/COLOR],-0.0004>,<0,0,1> MEAS/POINT,1 MOVE/CLEARPLANE HIT/BASIC,NORMAL,<0,0,0>,<0,0,1>,<-0.0287,-0.0025,-0.0004>,USE THEO = YES ENDMEAS/
Remembering that it is in metric, that converts to .0011 inch. While not to be dismissed, it isn't exactly huge either.
Again, metric, that's only .0001 inch - you're unlikely to get better than that.
Can you run us through the procedure you use to calibrate the angles?
+1
The feature that you are measuring has NO X or Y components. Only Z!
The error you see is the inablilty of the CMM to maintain the position of the probe in an exact position. Completely within any reasonable expectation of the machine to hold. The Z direction has the surface of the granite to control when the probe is activated. There is no surface to control the X or Y
+1
The feature that you are measuring has NO X or Y components. Only Z!
The error you see is the inablilty of the CMM to maintain the position of the probe in an exact position. Completely within any reasonable expectation of the machine to hold. The Z direction has the surface of the granite to control when the probe is activated. There is no surface to control the X or Y
The X&Y error is seen on 3D features such as spheres as well. We actually noticed it initially while trying to do a scan across a sphere.
The angles are calibrated using:
Operation -> Calibrate/Edit -> Active Probe -> select the angles -> Measure -> select options (DCC+DCC, etc.) -> Then run the calibration
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