HEIDENHAIN SW 54843x-02 DIN Programming - Manual (Page 324)

324 DIN programming
4.22 Dr
illing cy
cles
Linear pattern, lateral surface G744
Cycle G744 is used to machine linear drilling patterns or milling
patterns in which the individual features are arranged at a regular
spacing on the lateral surface.
Parameter combinations for defining the starting point and the
pattern positions:
 Starting point of pattern: Z, C
 Pattern positions:
 W and Q
 Wi and Q
If the Final point XE has not been defined, the drilling/milling cycle
or the figure definition of the next NC block is used as a reference.
Using this principle, you can combine pattern definitions with drilling
cycles (G71, G74, G36) or milling cycles (figure definitions with G314,
G315, G317).
Example: G744
%744.nc
[G744]
N1 T6 G197 S1200 G195 F0.2 M104
N2 M14
N3 G110 C0
N4 G0 X110 Z2
N5 G744 XS102 Z-10 ZE-35 C0 W270 Q5
N6 G71 XS102 K7
N7 M15
END
Example: Sequence of commands
[Simple drilling pattern]
N.. G744 Z.. C.. XS.. XE.. ZE.. W.. Q..
. . .
[Drilling pattern with deep-hole drilling]
N.. G744 Z.. C.. XS.. XE.. ZE.. W.. Q..
N.. G74 XE.. P.. I..
. . .
[Milling pattern with linear slot]
N.. G744 Z.. C.. XS.. XE.. ZE.. W.. Q..
N.. G792 K.. A.. XS..
. . .
Parameters
XS
Starting point of drilling/milling operation (diameter value)
Z Starting point of pattern in polar coordinates
XE Final point of drilling/milling operation (diameter value)
ZE Final point of pattern (default: Z)
C Starting angle of pattern in polar coordinates
W Final angle of pattern—No input: Holes/figures are arranged on
the lateral surface at regular spacing
Wi Final angle (angle increment), distance to the next position
Q Number of holes/figures—(default: 1)
A Angle (orientation angle of the pattern)
R Length (distance between first and last position [mm],
reference: unrolled lateral surface XS)
Ri Length (distance from the next position [mm], reference:
unrolled lateral surface XS)