Measure a rubber band or O-ring

My name is Lars Engstrup and from Denmark.

I have a task where I need to measure a diameter on a thin part made of rubber (like a rubber band or O-ring).

But when the part is made of rubber and deformed (not round) will calculation of the diameter not be possible by using the normal circle calculation program in PC-DMIS. But I need a method to calculate the circumference/length of the surface/contour on the diameter.

The diameter will be measured with optical scan at a Mycrona CMM.

What opportunities are there in PC-DMIS CAD + + (version 4.2) to calculating the circumference / length of the contour of a curve.

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acgarcia over 7 years ago

So some of the smaller o rings come out pretty circular and the optiv can scan the edge pretty well. The larger o rings that lay on the table in an oblong shape aren't being scanned well. When I click the 3 points to measure the circle, the o ring itself doesn't lay in the roi.

How do I get the optiv to follow the physical part? Also, would I still be able to get a diameter dimension out of it?
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acgarcia over 7 years ago

So some of the smaller o rings come out pretty circular and the optiv can scan the edge pretty well. The larger o rings that lay on the table in an oblong shape aren't being scanned well. When I click the 3 points to measure the circle, the o ring itself doesn't lay in the roi.

How do I get the optiv to follow the physical part? Also, would I still be able to get a diameter dimension out of it?
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