How can I use these cover images when the scratch labels disagree?

BethChan1107 · 15 Jul 2025, 12:57 UTC

Closed
BE
BethChan1107
I'm preparing UR5e inspection teaching examples. One polished cover has different scratch labels after reseating, and none identifies the physical mark. How should I rebuild the reference set before thresholds are tuned?

20 replies

TH
TheoArcher0410
Replying to BethChan1107

Start with the actual cover and get quality's judgement recorded against an ID. Keep the different pictures, but not as approved scratch examples yet. The camera can't settle which label somebody meant after the sample has disappeared.

11points
BE
BethChan1107
Replying to TheoArcher0410

Sample found and numbered. Quality is checking a faint line close to the edge. The big bright streak changes location in the pictures, so I have separated those observations.

11points
OL
OliverAli0189
Replying to BethChan1107

Put a status on the unresolved line. Otherwise the first person tidying the folder will decide whether it belongs in good or bad for you.

7points
OM
OmarChan1100
Replying to BethChan1107

Will the physical sample keep that unresolved status too?

-1points
BE
BethChan1107
Replying to OmarChan1100

Yes, in a marked reference box. I have stopped using it in student exercises while quality decides. They still have to agree the viewing conditions.

23points
AA
AaronBaker0436
Replying to BethChan1107

Keep a wide photo with the close-up. That helps a beginner find the same edge on the real cover, though quality still needs to define how they inspect it.

22points
TH
TheoArcher0410
Replying to BethChan1107

And record the camera and lighting arrangement on the next set. We get 'same lighting' written on things when the lamp has plainly wandered somewhere else between sessions.

17points
BE
BethChan1107
Replying to BethChan1107

Quality accepted the faint line under the agreed appearance check. We have recorded its location rather than pretending it isn't there. I'm now comparing the accepted cover with a known rejected sample.

21points
OL
OliverAli0189
Replying to BethChan1107

Who owns future label changes? A clear decision now won't stop the next engineer from casually renaming the image during a lighting trial.

17points
BE
BethChan1107
Replying to OliverAli0189

Quality technician owns the reference register. Engineering can add development images but cannot replace the agreed judgement in that set. Thank you, Oliver; that ownership was missing.

7points
OM
OmarChan1100
Replying to BethChan1107

Can students see why the faint line was accepted, not just that it was?

9points
TH
TheoArcher0410
Replying to OmarChan1100

I'd include quality's explanation with the viewing conditions, Beth. Not a universal rule that faint lines pass. Otherwise your teaching example will become a shortcut applied to a different finish.

23points
AA
AaronBaker0436
Replying to BethChan1107

Has the nest been checked for the reseating difference? I wouldn't buy new lighting until you know how repeatably the cover is being presented.

13points
BE
BethChan1107
Replying to AaronBaker0436

Tooling found a corner could hang on the nest rim. Revised clearance is proposed. We're keeping those inconsistent shots as development evidence and waiting for repeat presentations before choosing lighting.

16points
OL
OliverAli0189
Replying to BethChan1107

Label the nest revision on those pictures too. 'Before' and 'after' become surprisingly unhelpful once there are three afters.

22points
BE
BethChan1107
Replying to OliverAli0189

Done. Revised nest is R2; original R1 remains identified in the development folder. Repeat images are more consistent so far, with the rejected sample's mark still visible.

24points
TH
TheoArcher0410
Replying to BethChan1107

How many different covers have you tried in R2? One repeated part is useful for checking presentation, but it won't show whether other in-tolerance covers seat differently.

8points
BE
BethChan1107
Replying to TheoArcher0410

Only the two references so far. More samples are included in the next checks. I should say these two repeat more consistently, not that the whole setup is settled.

24points
AA
AaronBaker0436
Replying to BethChan1107

That's a useful limited result. Keep the wider sample check assigned before anyone treats the new pictures as approval to finish commissioning.

16points
OM
OmarChan1100
Replying to BethChan1107

Thanks for the R1/R2 detail. Much easier to follow which pictures explain which problem.

7points

Discussion closed

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