Download smart.Turn MANUALplus 620 / CNC PILOT 640

4.22 Drilling cycles
Circular pattern, lateral surface G746
Cycle G746 is used to machine drilling patterns or milling patterns in
which the individual features are arranged at a regular spacing in a
circle or circular arc on the lateral surface.
Parameter combinations for defining the center of the pattern and the
pattern positions:
 Center 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).
Parameters
Z
Center of pattern in polar coordinates
C
Angle (center point of pattern in polar coordinates)
XS
Starting point of drilling/milling operation (diameter value)
XE
Final point of drilling/milling operation (diameter value)
K
(Pattern) diameter
A
Starting angle (position of first hole/figure)
W
Final angle (position of last hole/figure)
Wi
Final angle (angle increment), distance to the next position
Q
Number of holes/figures—(default: 1)
V
Rotation direction (default: 0)
 V=0, without W: Figures are arranged on a full circle
 V=0, with W: Figures are arranged on the longer circular arc
 V=0, with Wi: The algebraic sign of Wi defines the direction
(Wi<0: clockwise)
 V=1, with W: Clockwise
 V=1, with Wi: Clockwise (algebraic sign of Wi has no effect)
 V=2, with W: Counterclockwise
 V=2, with Wi: Counterclockwise (algebraic sign of Wi has no
effect)
Beispiel: G746
%746.nc
[G746]
N1 T6 G197 S1200 G195 F0.2 M104
N2 M14
N3 G110 C0
N4 G0 X110 Z2
N5 G746 Z-40 C0 K40 Q8
N6 G71 XS102 K7
N7 M15
END
Beispiel: Sequence of commands
[Simple drilling pattern]
N.. G746 Z.. C.. XS.. XE.. K.. A.. W.. Q..
...
[Drilling pattern with deep-hole drilling]
N.. G746 Z.. C.. XS.. K.. A.. W.. Q..
N.. G74 XE.. P.. I..
...
[Milling pattern with linear slot]
N.. G746 Z.. C.. XS.. K.. A.. W.. Q..
N.. G792 K.. A.. XS..
...
HEIDENHAIN MANUALplus 620, CNC PILOT 640
337