HEIDENHAIN ND 1400 - Manual (Page 53)

39
6
Measuring
Establishing a reference frame
A reliable measurement reference must be established before part features can be probed and measured.
This reference frame is created by the user to ensure a level part surface, precise part alignment and ac-
curate datum zero. Reference features are presented in the feature list in blue, other features are presented
in black. Reference frames can be established in any projection plane. The examples included in this
chapter are in the X-Y plane.
Part leveling
When the surface plane of the part is not orthogonal to the measurement axis, small cosine errors can be
generated during the measuring process. These errors are minimized or eliminated by leveling the part.
To level the part:
1 Touch the Measure tab to dis-
play the 3D feature measure icons,
and then touch the measure plane
icon.
2 Perform the leveling measurement by probing three or more points
distributed across the surface of the desired part plane. Press the Finish
key to complete the level measurement.
3 Touch the Align and Zero buttons to level the plane at the Z = 0 elevation. The reference plane feature
will be shown in blue and the Z-axis value will be zero.
Establishing a Reference Frame