I have been asked to measure lead on a cylindrical machined surface. Is PC-DMIS capable of this measurement, and if so how would you go about programming the measurement?
I have been experimenting with scanning the surface very similar to your suggestion. I have scanned a part without lead and also a part that has a definite lead. When you graph each you can clearly see the difference between the two. The part with lead graph has a definite pattern (frequency) where the part with no lead is very irregular and does not have a pattern (frequency). From the graph I can see the distance of the lead in one revolution and can calculate the lead angle. Obviously I am unable to calculate the angle from the no lead part since there is no pattern and lead distance cannot be determined.
It would be nice to have PC-DMIS report the angle but I have not been able to determine how to do that yet. Still working on it though.
I have been experimenting with scanning the surface very similar to your suggestion. I have scanned a part without lead and also a part that has a definite lead. When you graph each you can clearly see the difference between the two. The part with lead graph has a definite pattern (frequency) where the part with no lead is very irregular and does not have a pattern (frequency). From the graph I can see the distance of the lead in one revolution and can calculate the lead angle. Obviously I am unable to calculate the angle from the no lead part since there is no pattern and lead distance cannot be determined.
It would be nice to have PC-DMIS report the angle but I have not been able to determine how to do that yet. Still working on it though.
