I'm trying to get a sensible baseline for our proposed UR5e lathe loading. The hand-loading sheet lists different protrusions, then somebody has written 'poor seating' beside the largest one. We never measured the overall lengths. How is the next shift meant to tell a long blank from a badly seated one?
Our spacer blank sheet gives protrusion but no blank lengths
JessBowen · 2026年1月15日 06:03 UTC
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回复 JessBowen
Can you connect each reading to a retained blank? If not, start with that on the replacement sheet. Otherwise the next shift gets the same puzzle in a different handwriting.
7分回复 JessBowen
I'd ask your setter what surface the protrusion was measured from too. Even the one measurement you've got needs a shared reference.
11分The blanks are numbered, Harish. Rebecca, it's from the chuck face, but the sketch doesn't say which face. The setter says he can mark the actual reference and repeat his comparison using the same blanks.
15分回复 JessBowen
We once found an end pip doing the seating for a blank. Look at the ends as well as length; don't assume two sawed pieces contact alike.
19分回复 JessBowen
Get the setter to mark it on a photo. 'The obvious face' isn't a handover.
22分Nora, was that pip visible before loading, or did it only become obvious when you compared the measurements? I'm wondering how easily a normal incoming check would catch it.
20分Visible, once we actually looked at the seating end. Everyone had been admiring the machined end.
12分回复 JessBowen
Our new measurements found two blank lengths, but that doesn't explain the full spread. The setter repeated one identified blank and got two different protrusions. He's stopped that comparison until maintenance checks the stop arrangement.
9分回复 JessBowen
That's a much better question now. Same blank removes one big variable without buying another measuring gadget.
9分回复 JessBowen
What changed between those two loadings, Jess? Same method, same person?
16分Same setter and method. Maintenance found the stop lock loose, so its position wasn't staying put. They've restored the arrangement to the specified setup. I want the repeated measurements done again before calling that the whole explanation.
6分回复 JessBowen
Keep the two length groups in the repeat, not just the blank that exposed the loose stop.
22分回复 JessBowen
And what becomes of the old 'poor seating' note? It should not survive as a finding on that longest blank now you know the setup was changing.
23分I've marked the old conclusion withdrawn, with the reason. The original readings stay visible. Nora's two-group repeat is on the setter's sheet, and the seating ends are included in his inspection.
15分Repeat finished. Protrusion is repeatable for each identified blank under the agreed check, and the difference between groups matches their overall-length difference. So we had real blank variation plus a loose stop, not a bad robot load. Thanks, Rebecca, for asking which face; that photo is now in the handover.
11分回复 JessBowen
Useful handover now. Keep the setter's actual setup reference with the results, not only the photo.
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