I have two proposals for transferring aluminium housings into inspection nests. Both quote the housing mass, but one has longer fingers and an adapter the other does not use. The hose fittings are absent from both totals.
I cannot infer suitability from that comparison. More precisely, I need the tool suppliers and our integrator to agree what they are assessing: complete assemblies, held positions, movement and release. Should I request one worst-case load figure, or separate cases that remain tied to their actual geometry?
Only the first proposal identifies the fingers. The second says extended set without a drawing reference. I have asked for that identity before the comparison proceeds.
Separate cases if the assemblies or held positions differ. A single largest mass can conceal the longer arrangement. The integrator still needs the applicable centre-of-gravity and inertia information, with the intended motion.
Include the tool after releasing the housing too. It still has to open and withdraw from the nest, and the proposed return movement may not be the same as the loaded approach
Liam, either can work if the assembly and state remain unambiguous. I would rather see one readable sequence than separate attractive images which quietly use different adapters
Harish, the first grips outside the housing; the second proposes entering its opening. They also place it at different depths in the inspection nest. We have not accepted either change to the nest interface.
Then agree the placement requirement before comparing their load results. Two valid assessments could still describe different jobs, and one may leave the housing somewhere inspection cannot use it.
Inspection accepts the outside-grip proposal's seating position. The internal proposal leaves the housing above its required support. Supplier says it can revise the fingers to release lower.
Make the revised tool the basis of that supplier's assessment. I once received replacement contacts under an old kit description after the contact geometry had changed. The installed tool was fine; the spare list was describing its predecessor. It took an unnecessary stoppage to make everyone look at the individual references. Your second supplier is already proposing a different reach into the housing, so this is a good time to insist the drawing, assessment and eventual spare list all describe the same thing
Thank you, Toby. The supplier has now issued a revised assembly reference rather than continuing to call both versions extended set. The release sequence is still missing the open-finger view inside our nest.
They can do both, Liam. Geometry is needed for the load assessment as well as clearance, so I would not split this into unrelated drawing and weighing errands.
Harish, yes: first assembly is with the integrator, including fittings and the loaded and released cases. The second supplier has finally shown its open fingers; they overlap a locating feature during withdrawal.
Keep that result attached to the second revision. If another finger shape is offered, it needs the same checks rather than inheriting the first version's assessment.