I have a torque converter housing that we made new shell core tools for. I checked all the radii via polar radius points and found some to be out of tolerance. It could be that the overall profile is wrong or that the shell core is slightly out of position.
I have done these parts on my CMM with Metrolog for years but I am trying to use the laser scanner to gather more data. Using Metrolog I can change the height of my starting plane and then run the program skipping over the lines of program where the actual measrement takes place and just update my alignments to simulate a tool adjustment, i.e core print adjustment.
Anyways I tried this on PC-DMIS today, and it kinda worked but kinda not. It updated points that I hard probed with the ruby tip, but surface points(no CAD available ) that I pulled from the laser scanned data, it did not update to the new alignments. Then I tried making the alignment tweek and saying yes when asked if you want the lines below to be updated. This worked except all my nominals changed also, I then had to go back and change all the nominals back to what the print reads.
My question is, using the first method and saying no when asked if you want lines below updated and then running the program so all the alignments( about 50 alignments ) update, why would the hard points be evaluated to the new alignments and not the surface points?
In the end I got what I was looking for, but I had to go back and change all the nominals( 100+ points )
