HEIDENHAIN ND 1200R - Manual (Page 27)

ND 1200R Radial 27
1
.3 Pr
epar
ing t
o
dr
ill
Aligning the part to an axis
Accurate drilling requires the part to be perfectly aligned along an axis.
Misaligned parts result in targeting errors. Use the SKEW function to
convert machine coordinates to part coordinates and compensate for
part misalignment. Perform a skew each time a new part is mounted.
Measure a skew line by probing a straight edge of the part on a major
measurement axis or by probing two or more pre-drilled holes.
Aligning a part edge to an axis
To align a part edge to an axis:
 Align the part on the stage.
 Press DATUM>SKEW.
 Probe a minimum of two points along a part edge. In the example
shown here, the part is aligned to the X-axis by probing three points
along the bottom edge of the part.
 Press the FINISH key.
The skew alignment edge or line must be oriented within
45 degrees of the measurement axis.
Three points are probed to align the bottom edge of a
part to the X-axis
1 2 3
The part could alternately have been aligned along a
vertical edge to the Y-axis.
The orientation of the cartesian coordinate system
depends on the type of machine. It can be changed by the
supervisor (password required).