HEIDENHAIN iTNC 530 (340 49x-03) - Manual (Page 284)

284 6 Programming: Programming Contours
6.8 Pr
ocessing DXF Files (Sof
tw
ar
e Option)
8 To save the selected contour elements in a plain-
language program, enter any file name in the pop-up
window displayed by the TNC. Default setting: Name
of the DXF file. If the name of the DXF contains
special characters or spaces, the TNC replace the
character with an underline.
8 Confirm the entry: The TNC saves the contour
program in the directory in which the DXF file is also
saved.
8 If you want to select more contours, press the
CANCEL SELECTED ELEMENTS soft key and select
the next contour as described above.
Dividing, extending and shortening contour elements
If contour elements to be selected in the drawing do not connect at
common end points, then you must first divide the contour element.
This function is automatically available if you are in the mode for
selecting a contour.
Proceed as follows:
8 The poorly connecting contour element is selected, so it is colored
blue.
8 Click the contour element to be divided: The TNC shows the point
of intersection with a star in a circle, and the selectable end points
with simple stars.
8 Press the CTRL key and click the point of intersection: The TNC
divides the contour element at the point of intersection and the stars
disappear. If there is a gap, or the elements overlap, the TNC
extends or shortens these poorly connecting contour element to the
point of intersection of the two elements
8 Click the divided contour element again: The TNC shows the end
points and points of intersection again.
8 Click the desired end point: The TNC now colors the divided element
blue.
8 Select the next contour element.
The TNC also transfers the workpiece-blank definition
(BLK FORM)
and to the contour program.
The TNC only saves elements that have actually been
selected (blue elements), which means that they have
been given a check mark in the left window.
If the contour element to be extended or shortened is a
straight line, then the TNC extends the contour element
along the same line. If the contour element to be
extended or shortened is a circular arc, then the TNC
extends the contour element along the same arc.
In order to use this function, at least two contour
elements must already be selected, so that the direction
is clearly determined.