HEIDENHAIN MANUALplus 4110 389
6.22 Pattern Machining
Circular pattern, lateral surface G746
With cycle G746, you can machine hole patterns or figure 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 and C
Pattern positions:
W and Q
Wi and Q
If 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 (polar)
C angle: Center of pattern (polar)
X starting point of drilling/milling operation (diameter value)
XE end point of drilling/milling operation (diameter value)
K diameter: Pattern diameter
A starting angle—position of the first hole/figure
K diameter: Pattern diameter (default: Current X position)
W end angle—position of the last hole/figure
Wi end angle—distance to the next position
Q number of holes/figures (default: 1)
V direction of rotation (default: 0): Position of holes/figures
(required if W is defined):
V=0: Holes are placed on the longer arc.
V=1: Holes are arranged clockwise, starting at A.
V=2: Holes are arranged counterclockwise, starting at A.
Example: G746
%746.nc
[G746]
N1 T60 G197 S1200 G195 F0.2 M104
N2 M14
N3 G110 C0
N4 G0 X110 Z2
N5 G746 Z-40 C0 K40 Q8
N6 G71 X102 K7
N7 M15
END
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