Cylindricity
Cylindricity checks ensure that all the specified points are the same distance from a common axis. The tolerance establishes the maxi- mum allowable distance between two concentric cylinders containing the measurements of that part.
Evaluation Process within SA:
-
Two coaxial cylinders are built bounding the extents of the data.
-
The cylinders are allowed to freely rotate to establish the minimum distance between them while still containing the data.
-
The final distance between these cylinders is compared to the tolerance for evaluation.