HEIDENHAIN IK 5494-2D - Manual (Page 168)

146 QC5200 Series User’s Guide
Probing specific feature types
While the probing process is essentially the same for all feature types, the minimum number of points
required and the geometric placement of these points are different. The unique requirements for probing
each specific feature type are described in the remainder of this section.
Points
A minimum of one probed point is required to measure a point.
Multiple points can be probed if the feature location is indistinct
and it is considered a benefit to use the geometric average of many
locations.
When a single point is probed, Measure Magic will correctly recog-
nize a point feature. However, when multiple points are probed, it
is possible that Measure Magic will assign the wrong feature type to
the data. If the wrong feature type is assigned, it can easily be changed by right-click-
ing the Results window and selecting the point feature alternative.
Measurement results are shown in the Features template, Part View window and
Results window. The Results window shows the feature identification number, the
number of points used in the measurement, the coordinate location of the point and
the form error. When only one point is probed, the form error is zero. When multiple
points are probed, the form error is the sum of error magnitudes of opposite polari-
ties.
A single point is probed to measure
the location of a point feature