When I am checking a part and I use the scan option, how do I compare points to nominals from the CAD data? For example, I import a part with CAD and I can use the hard-probe and touch a point and on the report it will say, Nominal = 95.00 Actual = 94.875. Then when I scan the same section with "Find Nominals from CAD" on and use Auto Surface Point to click a point on the scan, the nominal and actual equal each other which obviously isnt right. How do I change it so the nominals match the CAD data?
For example, I import a part with CAD and I can use the hard-probe and touch a point and on the report it will say, Nominal = 95.00 Actual = 94.875.
So from what I'm hearing, you have:
imported the model
healed the model
aligned the part to the model
activated Find Nominals from CAD with an appropriate FindNoms Tolerance from the Edit>Preferences>Setup menu
shot a single measured point on the part on a surface flat to an existing axis (because points are tricky that way)
build a dimension
noted on your report that you have a Nominal value, and a Measured value.
Then when I scan the same section with "Find Nominals from CAD" on and use Auto Surface Point to click a point on the scan, the nominal and actual equal each other which obviously isnt right. How do I change it so the nominals match the CAD data?
Once again, you should have:
imported the model
healed the model
aligned the part to the model
activated Find Nominals from CAD with an appropriate FindNoms Tolerance from the Edit>Preferences>Setup menu
then scanned a surface of the part. if you have an appropriate findNoms tolerance set, PCDMIS didn't squawk at you saying "I can't find any CAD surfaces within the bounds you told me to look!!"
of course, if you have findNoms turned off, it won't look for CAD data at all and will just give you the measured data without comparing it to any nominal data.
what you want to do at this point is create a Profile Dimension to compare the nominal data to the measured data.
we can't click on a single point of the scan and create an AutoSurface Point from it. What you're doing is just creating an AutoSurface Point. It has nothing to do with the scan's data. So until you execute the AutoSurface point, the nominal and actual for that Auto Surface Point are equal, which is perfectly correct.
Build the Profile with the appropriate FindNoms turned on if you want to see the scan's nominal vs actual.
For example, I import a part with CAD and I can use the hard-probe and touch a point and on the report it will say, Nominal = 95.00 Actual = 94.875.
So from what I'm hearing, you have:
imported the model
healed the model
aligned the part to the model
activated Find Nominals from CAD with an appropriate FindNoms Tolerance from the Edit>Preferences>Setup menu
shot a single measured point on the part on a surface flat to an existing axis (because points are tricky that way)
build a dimension
noted on your report that you have a Nominal value, and a Measured value.
Then when I scan the same section with "Find Nominals from CAD" on and use Auto Surface Point to click a point on the scan, the nominal and actual equal each other which obviously isnt right. How do I change it so the nominals match the CAD data?
Once again, you should have:
imported the model
healed the model
aligned the part to the model
activated Find Nominals from CAD with an appropriate FindNoms Tolerance from the Edit>Preferences>Setup menu
then scanned a surface of the part. if you have an appropriate findNoms tolerance set, PCDMIS didn't squawk at you saying "I can't find any CAD surfaces within the bounds you told me to look!!"
of course, if you have findNoms turned off, it won't look for CAD data at all and will just give you the measured data without comparing it to any nominal data.
what you want to do at this point is create a Profile Dimension to compare the nominal data to the measured data.
we can't click on a single point of the scan and create an AutoSurface Point from it. What you're doing is just creating an AutoSurface Point. It has nothing to do with the scan's data. So until you execute the AutoSurface point, the nominal and actual for that Auto Surface Point are equal, which is perfectly correct.
Build the Profile with the appropriate FindNoms turned on if you want to see the scan's nominal vs actual.
