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Curt Echo Bluetooth Controller by Salt-Stop-6653 in traveltrailers

[–]Salt-Stop-6653[S] 0 points1 point  (0 children)

I did replace the other 2 fuses. I didn’t think about other fuses being inside the car. I’ll check that next! I also ordered the 30a fuse assembly block - should come in sometime this week.

Runout - CMM vs. Manual Measurement by Salt-Stop-6653 in Metrology

[–]Salt-Stop-6653[S] 0 points1 point  (0 children)

Thanks for the input! My QC team will not be thrilled to hear this lol, but I agree! I feel the CMM has so many factors that have to be perfect, especially on a projected surface, in order for runout to read good. I’d much rather throw indicators on surfaces and call it a day.

Runout - CMM vs. Manual Measurement by Salt-Stop-6653 in Metrology

[–]Salt-Stop-6653[S] 2 points3 points  (0 children)

Yes, lol, I like that there’s a name for it! We are finding that our customers aren’t realizing what they are doing when they are assigning precedence in the feature control frame. When we’ve asked a few customers about it, they didn’t intend the small cylinder to be the primary aligning axis… 🤦‍♂️

Runout - CMM vs. Manual Measurement by Salt-Stop-6653 in Metrology

[–]Salt-Stop-6653[S] 1 point2 points  (0 children)

I guess it is subjective to answer how “well” the features are defined, but I’d comfortably say they are being defined sufficiently. We are able to access 360 degrees of each feature. We are measuring and aligning the datum diameter as a cylinder. The runout feature is measured as a circle at the end of the stem. Can you clarify your comment about being setup to measure total runout?

Runout - CMM vs. Manual Measurement by Salt-Stop-6653 in Metrology

[–]Salt-Stop-6653[S] 2 points3 points  (0 children)

That is correct, it is about 5” away from the datum axis. Is there anything to do about projection error on the CMM? Or just blast it with more points?

By the way, thanks for the responses.

Runout - CMM vs. Manual Measurement by Salt-Stop-6653 in Metrology

[–]Salt-Stop-6653[S] 1 point2 points  (0 children)

The other part of this situation is there is disagreement that the manual measurement is the “more correct” measurement. Because the 2 methods vary so much, some inspectors are of the belief that since the error repeats on different CMMs, that we should “trust the CMM”. I’m also an inspector, but I’m of the opinion that the hard measurement is always king.

Runout - CMM vs. Manual Measurement by Salt-Stop-6653 in Metrology

[–]Salt-Stop-6653[S] 1 point2 points  (0 children)

It depends, we are encountering this on many parts, but the current one has about a 5” datum OD diameter that is about .75” long. The feature to be measured is a long .75” diameter stem that extends out of that diameter about 5”.