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"SP600" probe measures too small

Henniger123
Good day,

I have a problem with the "SP600" probe head.
The diameters are, regardless of whether they are scanned or with an auto-element circle, it is always exactly 0.010mm smaller than it should.

Tested on a purchased ring with a certificate

Calibration says 1my standard deviation.

Maintenance says everything is ok.

Temperature compensation is off, but the room temperature is 20.5 ° C

Is it possible that the calibration is set incorrectly?
or is it a hardware error?

what can i do differently?


Useing pcDMIS 2020R1


Thank you for your time

Parents
  • First, you have to check parameters, in F10 / opt probe, and in the setting editor.
    ftp://ftp.wilcoxassoc.com/docs/FilesInHelps/Scanning%20Parameters%20-%20H006908%20PRB%20Params.pdf

    Once parameters are checked, you have to perform a lower matrix calibration.

    Then, you can create a circle scan around the sphere, and look at the difference of radius (it should be close to zero).
    You can also check the roundness of the ring (your measured circle), to see if it could be an alignment problem.



    I'm just curious. I have never worked with an SP600. How does PC-DMIS handle the calibration of probe tips? Does the lower matrix calibration only need to be done once in one angle? When different probe angles are being calibrated, does it just take touch points the way you would calibrate a TTP probe angle?
Reply
  • First, you have to check parameters, in F10 / opt probe, and in the setting editor.
    ftp://ftp.wilcoxassoc.com/docs/FilesInHelps/Scanning%20Parameters%20-%20H006908%20PRB%20Params.pdf

    Once parameters are checked, you have to perform a lower matrix calibration.

    Then, you can create a circle scan around the sphere, and look at the difference of radius (it should be close to zero).
    You can also check the roundness of the ring (your measured circle), to see if it could be an alignment problem.



    I'm just curious. I have never worked with an SP600. How does PC-DMIS handle the calibration of probe tips? Does the lower matrix calibration only need to be done once in one angle? When different probe angles are being calibrated, does it just take touch points the way you would calibrate a TTP probe angle?
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