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Coordinates Shift when Rotated to A90B90????

Hi everyone,
Writing a program today that requires profile measurements on each side of the part. All is well up until I go to rotate the tip to A90B90 (Manual Rotate, Old School TTP machine).
Program runs through the DCC Alignment and runs through the move points I've entered on the left side of the part in order to rotate from A0B0 and once I rotate to the desired A90B90 to take the scan for profile, the coordinates are shifting, and the screen is showing that the probe is much farther to the right (X Axis) that where it physically is? Can anyone explain to me what I am doing wrong please?

Tip is physically at -5.0078 in X, 1.5035 in Y and .7474 in Z
Once Tip is rotated it shows it to be +1.8452 in X, 4.0376 in Y and 2.6554 in Z


Any advice is greatly appreciated, Thank You!



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  • Sorry for the delay, was pulled in another direction for a while....

    That was the answer! I reset all tips, hit "Yes" Moved Sphere on A0B0, then clicked "No" to moved Sphere for the remaining A90B90 & A-90B90.
    Ran through all 3 cal cycles, everything seemed to match up so went ahead and ran through the program and Wha-Lah!!

    I can't thank you guys enough as this has been a huge weight on my shoulders for two days.

    Now my only concern is because of the error within the calibration setup, what other parts / programs have been affected by this error Astonished

    Thanks again guys! You're the best!

  • You may not always be able to find/fix the past, but you can prepare yourself to have future success. Best of luck in your experiences with PC-DMIS.
    I recommend taking this calibration lesson and applying it to your program headers, sooner rather than later, to protect against issues in the future. (Search Auto-Cal for alternative calibration methods that are not manual)
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  • You may not always be able to find/fix the past, but you can prepare yourself to have future success. Best of luck in your experiences with PC-DMIS.
    I recommend taking this calibration lesson and applying it to your program headers, sooner rather than later, to protect against issues in the future. (Search Auto-Cal for alternative calibration methods that are not manual)
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