HEIDENHAIN ND 1400 - Manual (Page 55)

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6
Measuring
Establishing a datum zero point
The datum zero point is used as the origin of the reference frame. The datum zero point can be positioned in
any location that satisfies the measurement requirements of the user and can be created by probing a point,
but is probably better created by constructing a point from parent features.
It would not be possible to provide a single description of this process for all measurement applications.
However, the concept is illustrated by this example and by the construction techniques described later in
this chapter.
After the part level and part skew are performed, a datum zero point
is constructed at the intersection points of the X-axis (skew axis), and
the Y-axis of the part.
To construct the datum zero point:
1 Touch the Measure Line icon
and then measure a line along the
Y-axis edge of the part.
2 Touch the measure point icon and then construct a point at the intersection of the skew and Y-axis
lines by touching (selecting) them in the feature list and pressing the Finish button.
Establishing a Reference Frame
Construct a point for the datum by selecting the skew and Y-axis lines and pressing the Finish key