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B89 Calibration Question

We sent a PO to Hex to do a B89 on our machine. Same PO, word for word, that was sent to them last year.

They show up, do the calibration, but this time there is a "Temperature Compensation Addendum" added to the end of the cert. That was not on our cert last year.


When the tech came to my shop-->
The technician asked me if we used temp comp and I told him "No. The machine has it and it functions properly, we don't use it though." He then said "Because you don't use temp come, I am going to...." and I politely cut him off and said "I need you to perform the exact service listed on the PO. If you can't do that for whatever reason, we need to change the PO before you proceed." He agreed to this verbally in the presence of myself as well as our calibration mgr.


Fast forward...he leaves for the day and then emails us a cert that has "Temperature Compensation Addendum" on the end.
*note that is says on their own service report that even though the cmm was in the shop it meets the qualifications for the environmental portion of the b89 spec*.

This confused us very much. I felt like he looked me in the eyes and disregarded my very clear instructions as well as our PO.

I called Hex and they swear up and down that "Temperature Compensation Addendum" changes noting about the calibration and that it was the exact same calibration that they did last year.

I do not have a good feeling about this.

The calibration status of our machines are tied to FROZEN aerospace process flow maps that CAN NOT be altered unless we go through customer audit & yaddayadda. Our quality team rejected the cert and issued a stop payment for the PO.

ad·den·dum
/əˈdendəm/
noun
  1. 1.
    an item of additional material, typically omissions, added at the end of a book or other publication.
Am I crazy for thinking there is an issue here? Am waiting to hear back from the service team as we speak. Any input/thoughts/comments would be appreciated
Parents
  • I just had a tech come in to calibrate our machine last week. He adjusted all 3 axis by 40 microns (.002). Also the tech was throwing his tools on my CMM. I asked him not to and he said "I'm not throwing it on the granite though."

    I didnt agree with the results and called hexagon. Apparently they don't agree with it either. So my CMM has been down for a week and I'm expecting the other guy to show up today.
Reply
  • I just had a tech come in to calibrate our machine last week. He adjusted all 3 axis by 40 microns (.002). Also the tech was throwing his tools on my CMM. I asked him not to and he said "I'm not throwing it on the granite though."

    I didnt agree with the results and called hexagon. Apparently they don't agree with it either. So my CMM has been down for a week and I'm expecting the other guy to show up today.
Children
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