HEIDENHAIN IK 5494-2D - Manual (Page 162)

140 QC5200 Series User’s Guide
The level plane feature will be added to
the Features template.
Creating a skew alignment
When the part is misaligned (twisted) in
the X-Y plane, small cosine errors can
be generated during the measurement
process.
These errors can be eliminated by creat-
ing a skew alignment for the part. The skew align-
ment includes a precise measurement of the part
misalignment. Once the misalignment is known
to the system, subsequent feature measurements
are automatically compensated to eliminate cosine
errors. Measurement data in the Results window
and feature images in the Part View window will
reflect measurements of a perfectly aligned part.
To create a skew alignment:
1 Click the Datum/Skew menu item. A description of the skew alignment
process will be displayed in a prompt window.
2 Perform a skew alignment by probing 2 or
more points well distributed along the entire length
of the desired part reference edge, and then click
OK in the prompt window.
The bottom edge of the part is probed with the Buffer
probe to perform skew alignment on the x-axis
A part misaligned in the X-Y plane