The fixture holds nominal shape. What happens after release? (Fairino FR5)

RaviAbbott0041 · 12 Aug 2026, 05:15 UTC

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RA
RaviAbbott0041
We're planning preparing robotic welding of gusseted brackets with Fairino FR5 on a gusseted angle-bracket assembly in a welded-bracket fabrication workshop. Our old inspection notes say it looks aligned while restrained, then falls outside the drawing requirement after release. I want to untangle fit-up, fixture location and final inspection before our new cell inherits an unexplained correction routine. This is a records review, not live welding adjustment.

18 replies

PR
PriyaCarter1003
Replying to RaviAbbott0041

@RaviAbbott0041 Does the inspection procedure define the released condition and reference supports? Check that alongside whether each old measurement says how the assembly was held.

16 points
RA
RaviAbbott0041
Replying to PriyaCarter1003

@PriyaCarter1003 The sheets mix clamped checks and released measurements. Some don't say which. The drawing has the dimension, but our procedure leaves the support condition vague.

7 points
PR
PriyaCarter1003
Replying to RaviAbbott0041

Have quality and the drawing owner define the acceptance condition. Group the old results by known measurement state; that should make them comparable.

16 points
HE
HenryBarnes0525
Replying to PriyaCarter1003

Same restraint label still doesn't mean comparable. Unknown supports and mixed fixture or process revisions could remain inside those groups.

14 points
PR
PriyaCarter1003
Replying to HenryBarnes0525

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

8 points
RA
RaviAbbott0041
Replying to PriyaCarter1003

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.

14 points
PR
PriyaCarter1003
Replying to RaviAbbott0041

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

22 points
NI
NinaCarter1023
Replying to PriyaCarter1003

@PriyaCarter1003 On my bracket job, filling blanks from memory produced a very persuasive trend. Finding the original fixture sheets made the trend disappear. Not my favourite chart.

13 points
TO
TobyBrooks0840
Replying to NinaCarter1023

Why doesn't matching the required shape in the fixture establish that the assembly meets the dimensional requirement?

12 points
PR
PriyaCarter1003
Replying to TobyBrooks0840

Because the required inspection condition may be after release. Holding a shape under restraint doesn't establish the shape the assembly takes without that restraint.

24 points
RA
RaviAbbott0041
Replying to PriyaCarter1003

@PriyaCarter1003 The drawing owner confirms released inspection on specified reference supports. Quality is putting that condition into the sheet. At least that part won't be guessed.

-1 points
HE
HenryBarnes0525
Replying to RaviAbbott0041

That establishes the intended inspection basis, but the measurement conditions of unlabelled historical results still remain unknown.

10 points
RA
RaviAbbott0041
Replying to HenryBarnes0525

I'll preserve the uncertainty on those historical entries. Establishing the intended condition gives the review a basis without supplying missing facts about past measurements.

1 points
PR
PriyaCarter1003
Replying to RaviAbbott0041

For the linked samples, add incoming fit-up observations beside released results. Your welding engineer can assess any association within the documented process conditions.

22 points
RA
RaviAbbott0041
Replying to PriyaCarter1003

The linked records show different fit-up conditions among assemblies that moved after release. It's a lead, but I can't tell whether fit-up caused the movement.

4 points
NI
NinaCarter1023
Replying to RaviAbbott0041

@RaviAbbott0041 Give your welding engineer both the pattern and its limits. A useful association doesn't need dressing up as a diagnosis to deserve attention.

6 points
RA
RaviAbbott0041
Replying to NinaCarter1023

@NinaCarter1023 I'm holding the fixture decision. The available measurements don't give us a sufficient basis to justify a change that addresses released dimensions.

0 points
PR
PriyaCarter1003
Replying to RaviAbbott0041

Understood. The missing measurement basis explains why a fixture revision isn't justified from these records.

22 points

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