HEIDENHAIN SW 688945-03 - Manual (Page 472)

472 ICP programming
6.16 Loading existing cont
ours
DXF contours (option)
Contours that exist in DXF format are imported with the ICP editor.
You can use DXF contours both for cycle operation and for smart.Turn.
Requirements of a DXF contour:
 Only two-dimensional elements
 The contour must be in a separate layer (without dimension lines,
without wraparound edges, etc.).
 Depending on the setup of the lathe, contours for turning operations
must be either in front of or behind the workpiece.
 No complete circles, no splines, no DXF blocks (macros), etc.
Contour preparation during the DXF format: Since the DXF format
is fundamentally different from the ICP format, the contour is
converted from DXF to ICP format during the import. The process
makes the following changes:
 Polylines are transformed into linear elements:
 Gaps between contour elements that are < 0.01 mm are closed.
 Open contours are described "from right to left" (starting point:
right).
 The starting point on closed contours is specified according to
internal rules.
 The rotational direction for closed contours is counterclockwise.