HEIDENHAIN SW 54843x-03 DIN Programming - Manual (Page 335)

HEIDENHAIN MANUALplus 620, CNC PILOT 640 335
4.22 Dr
illing cy
cles
Circular pattern, face G745
Cycle G745 is used to machine drilling or milling patterns in which the
individual features are arranged at a regular spacing in a circle or
circular arc on the face.
If the Final point ZE has not been defined, the drilling/milling cycle
of the next NC block is used as a reference. Using this principle, you
can combine pattern definitions with
 Drilling cycles (G71, G74, G36)
 The milling cycle for a linear slot (G791)
 The contour milling cycle with "free contour" (G793)
Parameter combinations for defining the center of the pattern and
the pattern positions:
 Center of pattern:
 X, C
 XK, YK
 Pattern positions:
 A, W and Q
 A, Wi and Q
Beispiel: G745
%745.nc
[G745]
N1 T7 G197 S1200 G195 F0.2 M104
N2 M14
N3 G110 C0
N4 G0 X100 Z2
N5 G745 XK0 YK0 K50 A0 Q3
N6 G791 K30 A0 ZS0 ZE-5 P2 F0.15
N7 M15
END
Beispiel: Sequence of commands
[Simple drilling pattern]
N.. G745 XK.. YK.. ZS.. ZE.. A.. W.. Q..
. . .
[Drilling pattern with deep-hole drilling]
N.. G745 XK.. YK.. ZS.. A.. W.. Q..
N.. G74 ZE.. P.. I..
. . .
[Milling pattern with linear slot]
N.. G745 XK.. YK.. ZS.. ZE.. A.. W.. Q..
N.. G791 K.. A.. Z..
. . .
Parameters
XK
Center of pattern in Cartesian coordinates
YK Center of pattern in Cartesian coordinates
ZS Starting point of drilling/milling operation
ZE Final point of drilling/milling operation
X Diameter (center point of pattern in polar coordinates)
C Angle (center point of pattern in polar coordinates)
A Starting angle (position of first hole/figure)
W Final angle (position of last hole/figure)
Wi Final angle (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)