Yep, Monday was the day the tech came in to do my machine. Original machine specs are +/-0.0007" for both accuracy and repeatability. Here are the results:
Checked linear every 4" in all axis, deviations in tenths (1=0.0001")
X: 0,-1,-1,-1,-2,-1,0,1,1,-2,-1
Y: 0,-1,0,-1,-1,-2,0,-1,-1,0,1,1,2,1,2,2
Z: 0,-1,-1,0,1,-1,-2,-3,-2,-1,-3
Maximum deviation = 0.0003" from nominal
Squareness over 27.5" on a solid gage
XY 0.0001"
XZ 0.0002"
YZ 0.0002"
Repeatability in X-, X+, Y-, Y+, Z-: variation of 0.0001" on repeated touch, all axis.
Then, after doing the calibration the correct way, they checked the machine using the ball-bar with these results at 20 positions on the table (deviations from calibrated lenth of ball-bar, NOT comparisions of opposite angle setups):
+0.0000
-0.0002
+0.0001
-0.0004
+0.0001
-0.0003
-0.0002
+0.0001
-0.0004
-0.0004
+0.0001
-0.0003
+0.0001
-0.0004
+0.0001
-0.0002
-0.0003
+0.0001
-0.0004
-0.0003
Biggest adjustment made by the tech: 0.0004" of squareness in the YZ plane over the 27.5" gage.
So! My machine is good and ready, how about yours?
Checked linear every 4" in all axis, deviations in tenths (1=0.0001")
X: 0,-1,-1,-1,-2,-1,0,1,1,-2,-1
Y: 0,-1,0,-1,-1,-2,0,-1,-1,0,1,1,2,1,2,2
Z: 0,-1,-1,0,1,-1,-2,-3,-2,-1,-3
Maximum deviation = 0.0003" from nominal
Squareness over 27.5" on a solid gage
XY 0.0001"
XZ 0.0002"
YZ 0.0002"
Repeatability in X-, X+, Y-, Y+, Z-: variation of 0.0001" on repeated touch, all axis.
Then, after doing the calibration the correct way, they checked the machine using the ball-bar with these results at 20 positions on the table (deviations from calibrated lenth of ball-bar, NOT comparisions of opposite angle setups):
+0.0000
-0.0002
+0.0001
-0.0004
+0.0001
-0.0003
-0.0002
+0.0001
-0.0004
-0.0004
+0.0001
-0.0003
+0.0001
-0.0004
+0.0001
-0.0002
-0.0003
+0.0001
-0.0004
-0.0003
Biggest adjustment made by the tech: 0.0004" of squareness in the YZ plane over the 27.5" gage.
So! My machine is good and ready, how about yours?

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