Our UR5e faceplate example changes its scratch whenever the plate moves

AlexArcher0385 · 13 Jun 2026, 05:32 UTC

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AL
AlexArcher0385
I've paused threshold tuning on our faceplate plan. The brightest streak shifts with presentation, but the example labels call it a scratch. Need quality's physical references and a controlled imaging comparison before this becomes commissioning evidence.

16 replies

TH
TheoArcher0410
Replying to AlexArcher0385

Can you link the views to individual retained faceplates? I'd start with a small set you can actually put on the bench. A hundred impressive pictures won't help if nobody knows whether they show one plate or twenty.

17 points
AL
AlexArcher0385
Replying to TheoArcher0410

Four plates retained and numbered. Two views of one accepted-looking plate have different scratch labels, but accepted-looking is my description, not a quality decision.

21 points
JA
JasperChan1073
Replying to AlexArcher0385

Keep that wording clear until quality judges it. Need the actual appearance requirement, viewing method and physical decision attached to the sample, not just another round of votes on the image.

13 points
NA
NaomiBrown0941
Replying to AlexArcher0385

Can the inspection team also record how the plates were seated for each view, so maintenance has something concrete to reproduce when the presentation changes later?

13 points
EL
Eli_Bailey
Replying to AlexArcher0385

Could the label annotation itself hide the feature people are meant to compare? I would keep an unannotated view available beside any marked defect location.

25 points
AL
AlexArcher0385
Replying to NaomiBrown0941

Naomi, seating wasn't recorded in the old examples. Eli, one caption overlaps the bright streak. I've retained the raw image and stopped using that captioned version as a teaching reference.

16 points
NO
NoraAllen0322
Replying to AlexArcher0385

A moving highlight doesn't acquit the whole faceplate, either; you can have reflection and a genuine scratch in the same image, so keep the physical judgement separate from deciding which bright feature moved.

18 points
SA
SamBennett0768
Replying to NoraAllen0322

We used one disputed plate as the entire training exercise and just rehearsed the same argument, so I'd add known acceptable finish variation and a confirmed reject before asking anybody to tune this.

4 points
JE
JessBlair
Replying to SamBennett0768

Sam, did more examples settle that argument, or did you still need somebody to decide the physical plate first?

19 points
SA
SamBennett0768
Replying to JessBlair

We still needed quality, Jess; the extra examples made the lesson useful without pretending our disputed one had magically become a reliable answer.

4 points
AL
AlexArcher0385
Replying to NoraAllen0322

Quality has judged the four retained plates now. One reject has a physical scratch away from the brightest moving stripe. Nora, that was exactly the distinction we were missing.

16 points
TH
TheoArcher0410
Replying to AlexArcher0385

That sounds like a useful comparison piece. I'd ask the vision person to vary presentation and lighting separately around it, with the actual defect location retained. Then you can see which condition hides the scratch rather than just improves the photograph.

8 points
JA
JasperChan1073
Replying to TheoArcher0410

And save the rejected imaging conditions. Not as tuning truth; as cases the eventual inspection method must not silently accept.

21 points
NA
NaomiBrown0941
Replying to TheoArcher0410

Who will own those condition records once commissioning finishes, Alex, including the fixture and lighting references needed after a replacement?

13 points
AL
AlexArcher0385
Replying to NaomiBrown0941

Our inspection lead will own the reference set with maintenance holding the fixture and lighting revisions. Controlled imaging work hasn't finished, so we still have no threshold set to approve.

20 points
EL
Eli_Bailey
Replying to AlexArcher0385

That should also help the trainer show an unambiguous comparison. I would keep the physical defect marker separate from captions explaining why another bright stripe is not the decision.

11 points

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