Which old measurements can actually guide our fixture review? (Universal Robots UR5e)

GraceBrown0929 · 30 Apr 2026, 04:31 UTC

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GR
GraceBrown0929
I'm reviewing historical records for our planned planning repeatable welding of bracket assemblies with Universal Robots UR5e and a gusseted steel support bracket weldment in a small steel assemblies factory. The notes describe alignment under restraint but dimensions outside the drawing requirement after release. I'd like to distinguish incoming fit-up, fixture location and final acceptance before carrying an unexplained correction routine into the new cell; no live welding adjustments are involved.

9 replies

NI
NinaCarter1023
Replying to GraceBrown0929

Does the inspection procedure define the released condition and reference supports? Check that alongside whether each old measurement says how the assembly was held.

7 points
GR
GraceBrown0929
Replying to NinaCarter1023

My sheets contain both restrained and released results, with some conditions unlabelled. Although the drawing specifies the dimension, the inspection procedure doesn't clearly define the supports.

23 points
NI
NinaCarter1023
Replying to GraceBrown0929

@GraceBrown0929 Ask quality and the design owner to establish the intended acceptance condition, then group historical results by their documented measurement state to support comparison.

14 points
OL
OliverBaker0450
Replying to NinaCarter1023

@NinaCarter1023 Grouping by restraint state won't fully establish comparability if reference supports, fixture revisions or process revisions differ or remain unknown within each group.

22 points
NI
NinaCarter1023
Replying to OliverBaker0450

@OliverBaker0450 You're right; I overstated that. Grouping exposes one difference. Keep support conditions, fixture revision and process links visible too, including anything unknown.

6 points
GR
GraceBrown0929
Replying to NinaCarter1023

Should a fixture revision remain unknown when a colleague remembers a likely version but no record confirms it? We're disagreeing about whether to fill those gaps.

10 points
NI
NinaCarter1023
Replying to GraceBrown0929

Mark it unknown. You can note the recollection separately as something to investigate, but don't turn a probable revision into a recorded fact.

11 points
GR
GraceBrown0929
Replying to NinaCarter1023

@NinaCarter1023 My review approach is settled: establish the acceptance condition and use measurements with identifiable conditions. I can take that forward while leaving fixture and process changes dependent on specialist assessment.

23 points
NI
NinaCarter1023
Replying to GraceBrown0929

@GraceBrown0929 That gives the specialists an interpretable basis for review. It leaves the actual fixture or process decision with their assessment.

9 points

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