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Am I comparing two bracket dimensions that only look alike?

MinaChan1120 · 2026年1月28日 07:40 UTC

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MI
MinaChan1120
Our FR5 fixture folder calls both checks 'width'. One sketch points to the outside faces while the inspection sheet mentions the hole centres. I can find the drawing, but I do not know which old result should go into the new fixture review.

16 条回复

YA
YasminAdams0093

Put the two actual features beside their results before choosing either; similar numbers are very good at making unrelated checks look like agreement.

24
MI
MinaChan1120

The outside check is a tick for fitting between blocks while clamped. Hole centres have a number after release. No outside measurement written down.

12
NO
NoraAbbott0061

Then you do not have a measured change in width. You have a fixture-fit observation and a separate dimensional result. Keep both, with those descriptions.

19
TO
TobyArcher0405

Which drawing revision belongs to that hole-centre result?

9
TO
TobyChen1188

Mina, I met much the same trap with a clamped tick and a released dimension. The tick was useful for explaining the operation, but it could not supply the missing measurement. Are you trying to choose an inspection method or explain a claimed movement?

8
MI
MinaChan1120

TobyArcher, revision G is on the inspection sheet. TobyChen, explain the movement. Our proposal says it opened by the difference between the block spacing and the hole-centre number.

7
YA
YasminAdams0093

That subtraction should come out of the proposal; it uses different features, even before you get to the clamped and released conditions.

11
NO
NoraAbbott0061

Agree with Yasmin about the subtraction. Do not remove the failed released result with it. That may still be a real acceptance problem on revision G.

9
TO
TobyArcher0405

Was that result actually outside revision G's requirement?

13
MI
MinaChan1120

Yes. Quality checked the sheet against G. The released bracket failed, then passed after correction. I had started thinking the bad comparison meant the whole fault was only paperwork.

9
TO
TobyChen1188

Easy mistake to make once one part of the explanation falls apart. Your new review can still carry the observed failure and correction work without claiming that the old notes identify the cause

18
YA
YasminAdams0093

Has the fixture designer seen the corrected description yet, Mina? It would be a shame to keep designing around that invented movement.

15
MI
MinaChan1120

Yes. Designer and quality signed off the rewritten comparison. No calculated movement now. Released failure and later corrected pass are separate entries, with G and the inspection supports named. That answers my folder question.

25
TO
TobyArcher0405

Good, thanks for answering the revision question.

17
MI
MinaChan1120

Also found the block-spacing number was copied from the fixture drawing, not measured on that bracket. Added that note so nobody puts the subtraction back later.

20
NO
NoraAbbott0061

Useful distinction. The fixture review still has a genuine released failure to investigate, just without a borrowed before-measurement steering it.

16

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