Aligning features when all features have changed.

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Dane
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Aligning features when all features have changed.

Post by Dane »

Hi there.

We're gonna be doing a scanning/measuring job on a bunch of flanges. Said flanges is to be clad in a different steel than the parent part and then, if I do my job right, document the addition of material.
The thing is, every single surface is to be clad which leaves me with no recognizeable features.
My work-around is to hault the welding midway and let me do a scan while there are still fixed features available and then repeat the process using the newly clad areas as the new reference point. I was thinking to hault the welding vefore they reach the sealing surface and boltholes in the thought that this would leave me enough to align with after the fact. And when i have the OD and ID scanned, i can use those for alignment reference later on when the last faces are clad.
These are quite massive parts, reaching 0,5 ton so there's no easy manipulation and quite a distance to cover compared to the parts we usually work on.
We'll be using a handyscan black elite and Polyworks.

Anyone have any pointers?
jaredmatthews
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Re: Aligning features when all features have changed.

Post by jaredmatthews »

Why not install external reference point features to align to.

That way, no matter how much the flanges change, you won need them for alignment.

Not sure how big your site is, but if you set up a control network with some checkerboard that are fixed into place, then you use those checkerboard to reference your scans
sim.herrod
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Re: Aligning features when all features have changed.

Post by sim.herrod »

Definitely sounds like a job for checkerboard targets and a control network.
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