Results comparison

[[Cl...]]

I have two 543 O-inspects running the same program, same master part. Results attached. The greatest difference from all the dimensions (that I'm concerned with) is 0.0003" All of the dimensions shown are measured with the Dotscan except for 221 (4x).
Is a difference of 0.0003 large enough to be concerned?

[[DW...]]

I am going to say yes. What kind of characteristic and features? Also you can use the absolute function in Excel for your delta formula, for example =ABS(D5-E5) to always return a positive integer.

[[Cl...]]

Thanks, I wasn't aware of =ABS(D5-E5).

These are the two I'm concerned with

200a/200b are line profiles

215 is a center-to-center distance using circles constructed from two Contour in best fit constructions.

[[DW...]]

I'm afraid I can't be terribly helpful here. Perhaps enable additional printout for the line profile and compare the coordinates of where the deviations are at the largest? For 215 are you constraining the size of the circles?

[[Cl...]]

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As for the constraint question. I don't know I didn't write this program.

[[Ke...]]

"Standard" Profiles with one result are usually 2x the greatest deviation from nominal.
I typically report the x/y/z deviations, and compare those, instead of the Profile result.

[[Cl...]]

In this particular situation, I am concerned with the fact that two different machines running the exact same
program and the exact same part are getting 0.0003" difference in two of the dimensions measured. I need to
know, 1) is this too much? (I believe it is) and 2) what is causing the difference?

[[Ma...]]

That difference is 0,00762mm - so this can be dust, temperature, probing head, calibration. It depends on type of part ( grinded, milled, any surface finish )

Strategy can effect too - scan would point to probe head/tip
Is deviation on specific axis so it can be confirmed with cal. ring?

[[Cl...]]

Parts are thoroughly cleaned before measurement. Measurement was done directly after each machine had
all its sensors qualified. Part is a centerless ground SS cylinder. The dimension in question 3d curves measured
with the White-light (DotScan). Then a contour in best fit construction from those measured curves.

[[Ke...]]

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I'm not very familiar with the DotScan, but:
Did you review the differences between the sensor qualification results on each machine?

[[Cl...]]

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I have not. I've been looking at everything else I could think of, but not that yet. That's my next step. Thanks.