Profile of a Line

Line profile is much like surface profile except that it is a 2D check. The tolerance zone is normal to the surface profile of the feature at a cross-section. This can be a useful if you want to evaluate a single portion of a surface at a location or a set of parallel location evaluated in cross sections.

Evaluation Process within SA:

  1. The direction vector for analysis is established from the direction object chosen.

  2. Cross sections are established along this direction vector and the data is divided into groups.

  3. A plane is fit to the first point in each cross section group (using the actual feature direction vector) and then the points are projected onto that plane.

  4. Measurements are allowed to rotate based on the datum constraints to minimize the point deviations.

  5. The extent of the max point deviation doubled to describe the fit deviation zone and compared to the tolerance to evaluate the check.