HEIDENHAIN ND 100 User Manual - Manual (Page 40)

40 1 Operation
1
.4 Measur
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Measuring circles
A minimum of 3 points are required to measure a circle. A maximum
of 100 points can be probed and will be processed by a fit algorithm to
define the circle.
 Press the Circle Measurement key. The Probe Circle
screen will be displayed. Press the key twice to
measure a series of circles using auto repeat.
 Move the stage to position the crosshairs over a point
on the circumference of the circle and press the ENTER
key.
 Move the stage to position the crosshairs over two
other points evenly distributed around the
circumference, pressing the ENTER key to collect each
point.
 Press the FINISH key to complete the measurement.
The circle position and diameter will be shown and
the circle feature will be added to the feature list.
 Press the Left or Right Arrow key to toggle the
display between Diameter and Radius if desired.
 Press the Change soft key to change the circle fit
algorithm if desired.
Circle fit algorithms include:
 LSBF: Fit determined by minimizing the sum of the squared point
deviations from the form fit.
 ISO: Fit determined by minimizing the form deviation.
 Outer: Yields the biggest circle.
 Inner: Yields the smallest circle.
A circle is probed on the part
The circle position and diameter are shown and the
circle feature is added to the feature list