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

ElenaCarter1036 · 31 Aug 2026, 10:36 UTC

Reply to discussion
EL
ElenaCarter1036
I'm reviewing historical records for our planned reviewing fixtures for welded mounting brackets with Fairino FR5 and a steel gusseted bracket assembly in a welded-bracket fabrication workshop. 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.

21 replies

BR
BrunoChan1061
Replying to ElenaCarter1036

@ElenaCarter1036 Does the inspection procedure define the released condition and reference supports? Check that alongside whether each old measurement says how the assembly was held.

10points
EL
ElenaCarter1036
Replying to BrunoChan1061

@BrunoChan1061 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.

6points
BR
BrunoChan1061
Replying to ElenaCarter1036

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

7points
RE
ReeceAbbott0036
Replying to BrunoChan1061

@BrunoChan1061 Same restraint label still doesn't mean comparable. Unknown supports and mixed fixture or process revisions could remain inside those groups.

-10points
BR
BrunoChan1061
Replying to ReeceAbbott0036

@ReeceAbbott0036 That's a fair correction. State grouping addresses only one source of difference; the review also needs support conditions and fixture and process references, with missing information explicitly identified.

5points
EL
ElenaCarter1036
Replying to BrunoChan1061

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.

21points
BR
BrunoChan1061
Replying to ElenaCarter1036

@ElenaCarter1036 Mark it unknown. You can note the recollection separately as something to investigate, but don't turn a probable revision into a recorded fact.

11points
CH
ChloeAli0222
Replying to BrunoChan1061

I had a separate bracket job where inferred fixture revisions created an apparent trend. Once the original sheets established the revisions, the trend no longer held.

14points
EM
EmmaAdams0115
Replying to ChloeAli0222

If the fixture holds it straight, why isn't that already the result we want?

14points
BR
BrunoChan1061
Replying to EmmaAdams0115

@EmmaAdams0115 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.

10points
EL
ElenaCarter1036
Replying to BrunoChan1061

I've had the drawing owner confirm the released inspection condition and its reference supports. Quality is adding those requirements to the sheet so the measurement state is explicit.

5points
RE
ReeceAbbott0036
Replying to ElenaCarter1036

@ElenaCarter1036 Useful clarification. It doesn't retroactively tell you how the unlabelled old measurements were taken, though.

7points
EL
ElenaCarter1036
Replying to ReeceAbbott0036

@ReeceAbbott0036 I'll keep those old entries flagged. The new definition helps the review; it doesn't magically repair the old paperwork.

10points
BR
BrunoChan1061
Replying to ElenaCarter1036

Where sample links exist, pair incoming fit-up observations with the released measurements. That allows the welding engineer to assess associations in the context of the documented process.

20points
EL
ElenaCarter1036
Replying to BrunoChan1061

@BrunoChan1061 I've found varying incoming fit-up in the traceable records for assemblies that changed shape after release. The association is visible, although it doesn't establish causation.

11points
CH
ChloeAli0222
Replying to ElenaCarter1036

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

16points
EM
EmmaAdams0115
Replying to ChloeAli0222

Would more clamps stop it moving after release? That's what I'd have guessed.

17points
BR
BrunoChan1061
Replying to EmmaAdams0115

@EmmaAdams0115 More restraint can change the behaviour, but doesn't guarantee the released dimensions. Have the fixture specialist and welding engineer assess restraint, thermal movement and release together.

15points
EL
ElenaCarter1036
Replying to BrunoChan1061

@BrunoChan1061 I'll leave the restraint change for the design review. Would proposed welding-sequence changes belong in the material sent to the welding engineer as well?

21points
BR
BrunoChan1061
Replying to ElenaCarter1036

@ElenaCarter1036 Include them as proposals requiring the welding engineer's assessment against applicable process requirements. A fixture-review note shouldn't itself authorise a change to the welding sequence.

15points

Add to the discussion

Welcome to Application Robot

Everyone can read the forum. Sign in or create an account to start a discussion, reply, or upload photos.

Forgot your password?

By creating an account, you agree to our Terms and Conditions and community guidelines. Read our Privacy Policy for how your information is handled.