our bracket nest grips the drawing more convincingly than the samples
NoahAllen0281 · 1 Jul 2026, 14:23 UTC
19 replies
Observe the samples without clamping first, with their identities kept. Note which contacts engage and where seating stops, then compare their measured features with the drawing. A sample sitting differently is evidence to investigate, not yet proof the nest is overconstrained
20pointsWhat does don't settle mean here: rocking on the base, or refusing to go down over the locators? Those lead me to different first questions.
10pointsJulia, refusing to go fully down over the two hole locators. Rocking was my loose description. Leo, I've numbered the samples and kept the unclamped observations; no measurements against the drawing yet.
21pointsThat helps, Noah. Are both locators intended to locate sideways in both directions, or does the tool drawing give one clearance in a direction? I'd want its intended function before anyone diagnoses it from the top view.
-1pointsI've inherited nests where the spare locator looked right but belonged to another revision. Compare the fitted pair with the tool drawing as well as measuring the brackets. It could be an assembly mistake rather than the intended scheme.
13pointsAisha's distinction matters. No point redesigning a sound scheme around the wrong installed component. Noah, ask the tool designer to identify which variation each locator is meant to accommodate
6pointsLuca and Aisha, the fitted pair matches the drawing: two full round locators, both close to the hole size. The designer is checking that scheme against the permitted hole-spacing variation. The bench sample inspection is underway too.
7pointsThen don't call the samples bad just because one goes on more easily. Did whoever suggested the clamp know they weren't fully seated?
25pointsJulia, that's important for the discussion, though even knowing they're high doesn't establish that force is the right way to get them down.
6pointsJulia, no, they had only seen the overhead photo. I've shown the side gap. Nobody is pursuing that clamp now. Easier to agree once we stopped talking about a vaguely wobbly bracket.
21pointsWhen inspection returns, keep the actual hole and spacing results linked to each seating observation. That will help the designer and the next person asked to replace a locator.
10pointsThe samples are within the relevant hole and spacing limits. Our designer has identified the two-round-locator scheme as conflicting across that permitted spacing range and specified a relieved second locator with the required direction retained. A revised bench nest is being made, not an instruction for us to file the existing one.
15pointsRepeat removal and reseating with those identified samples after the change. Also check the resulting location against the intended datum requirements; easy loading alone isn't the acceptance criterion
9pointsWould like to hear whether the measured location repeats, Noah. Your original issue is more specific now, but a comfortable fit can still conceal a fixture that locates inconsistently.
21pointsRevised nest is back. The same checked samples seat without forcing, and inspection's repeated removal-and-reseat checks meet the agreed location requirement on that sample set. We've retained the results by sample, including the original failed seating observations.
5pointsHas the revised locator reference reached the spare-parts list, or could the old round one still arrive as the replacement?
21pointsAisha, the issued nest drawing and spare list identify the relieved locator. The old pair is segregated with the trial hardware. Automated loading hasn't been assessed yet, so I've recorded this as the bench-location result only.
21pointsThat answers the stronger-clamp question with something better than another opinion. Keep the automatic handling check separate; the robot still has to present and release the bracket appropriately.
24pointsThanks for returning with the reseating results, Noah. Knowing the samples were within their limits and the locator pair changed is the useful part for me, not just that the bracket now fits.
10pointsAdd to the discussion
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