So, I am using a romer arm to measure concentricity of two holes. With a traditional CMM (and different software) we have found the concentricity of the holes to be 0.26mm. However, with the romer arm it shows the concentricity to be 2.9mm. If you take the acuals from the two holes and calculate the concentricity it should read like the traditional CMM???? Why is PC DMIS not giving me the correct reading? Any suggestions on how to measure this dimension with the Romer ARM?
You can check concentricity with PCDMIS, BUT it reports it according to ISO standards. That is, it reports concentricity as TP (position).
Lots of luck.
I have been reading a bunch of stuff and no one can explain this simply to me. I just want to know how to calculate this number. Basically anything I read says make sure it is centered. I don't want English I want math!!
But your post is perfecT!! I can calculate true position [tp = sqrt(x^2+y^2)*2] with calipers on our car part. Thanks for also explaining it is ISO.
You can check concentricity with PCDMIS, BUT it reports it according to ISO standards. That is, it reports concentricity as TP (position).
Lots of luck.
I have been reading a bunch of stuff and no one can explain this simply to me. I just want to know how to calculate this number. Basically anything I read says make sure it is centered. I don't want English I want math!!
But your post is perfecT!! I can calculate true position [tp = sqrt(x^2+y^2)*2] with calipers on our car part. Thanks for also explaining it is ISO.
