HEIDENHAIN iTNC 530 (340 420) - Manual (Page 351)

HEIDENHAIN iTNC 530 323
8.7 SL Cy
cles with Cont
our F
o
rm
ula
Entering a contour formula
You can use soft keys to interlink various contours in a mathematical
formula.
U U U U Select a Q parameter function: Press the Q key (in the numerical
keypad at right). The Q parameter functions are displayed in a soft-
key row.
U U U U To select the function for entering the contour formula, press the
CONTOUR FORMULA soft key. The TNC then shows the following
soft keys:
Overlapping contours
By default, the TNC considers a programmed contour to be a pocket.
With the functions of the contour formula, you can convert a contour
from a pocket to an island.
Pockets and islands can be overlapped to form a new contour. You can
thus enlarge the area of a pocket by another pocket or reduce it by an
island.
Subprograms: Overlapping pockets
Pockets A and B overlap.
The TNC calculates the points of intersection S1 and S2 (they do not
have to be programmed).
The pockets are programmed as full circles.
Logic command Soft key
Intersection with
e.g. QC10 = QC1 & QC5
Union with
e.g. QC25 = QC7 | QC18
Union without intersection
e.g. QC12 = QC5 ^ QC25
Intersection with complement of
e.g. QC25 = QC1 \ QC2
Complement of contour area
e.g. Q12 = #Q11
Opening parenthesis
e.g. QC12 = QC1 * (QC2 + QC3)
Closing parenthesis
e.g. QC12 = QC1 * (QC2 + QC3)
The following program examples are contour description
programs that are defined in a contour definition program.
The contour definition program is called through the SEL
CONTOUR
function in the actual main program.