HEIDENHAIN IK 5294 - Manual (Page 115)

5
Measuring
95
Lines
A minimum of two probed points is required to measure a line. There is no practical limit to the number of
points that can be probed, and in general accuracy is increased by probing more points.
A best-fit algorithm is used to define the line when more than two points are probed.
The line fit to the probed data can easily be changed by right-clicking the Results
window and selecting the desired fitting algorithm. Please refer to Appendix C:
Data Fitting Algorithms for details regarding the fitting algorithms.
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 angular orientation of the line, the coordinate location of the center of the line and the form error. When
only the two required points are probed, the form error is zero. When more than two points are probed, the
form error is the sum of the two greatest opposing error magnitudes.
Click the feature stamp
icon in the left corner of the
Results window to display
the Feature Stamp window.
The line will be shown
with data point form er-
rors in blue, filtered points
in yellow and the greatest
two opposing form errors
in red.
Three points are probed to measure a line feature
Probing and Measuring Features
5 Measuring OE.indd 13 5/9/2005 10:00:04 AM