hexagon logo

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
  • It has been explained to me that on the more modern controllers (2010+?), tempcomp is always enabled on the machine itself (as opposed to the machine and the part) whether or not you use the tempcomp command in the measuring routine. So, disabling it now may have more consequences than you realize.

    Regardless, it does sound like there is some sort of breakdown in communication. I think your are justified in feeling uneasy about it. I understand, I'm in aerospace too, and we have customers that insist on measuring in a temperature controlled environment (68F +/-2 or oddly 68F +2/-0). And, they do not allow tempcomp on the part. Tempcomp on the machine is a gray area that I hope never comes up. Though, if there is some addendum about it on the cert, I'd worry that it might come up. Auditor: "Hey, what's this about?" - Long stressful day begins.

    Hopefully Hexagon can get that all straightened out for you.
Reply
  • It has been explained to me that on the more modern controllers (2010+?), tempcomp is always enabled on the machine itself (as opposed to the machine and the part) whether or not you use the tempcomp command in the measuring routine. So, disabling it now may have more consequences than you realize.

    Regardless, it does sound like there is some sort of breakdown in communication. I think your are justified in feeling uneasy about it. I understand, I'm in aerospace too, and we have customers that insist on measuring in a temperature controlled environment (68F +/-2 or oddly 68F +2/-0). And, they do not allow tempcomp on the part. Tempcomp on the machine is a gray area that I hope never comes up. Though, if there is some addendum about it on the cert, I'd worry that it might come up. Auditor: "Hey, what's this about?" - Long stressful day begins.

    Hopefully Hexagon can get that all straightened out for you.
Children
No Data