Circular Pattern On Lateral Surface G746 - HEIDENHAIN CNC PILOT 640 User Manual

DIN/ISO programming | Drilling cycles

Circular pattern on 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 (polar)
C: Angle – center point (polar)
XS: Start point of drilling/milling operation (diameter value)
XE: Final point of drilling/milling operation (diameter value)
K: Diameter – pattern diameter
A: Start angle – position of the first hole/figure
W: Final angle – position of the last hole/figure
Wi: End angle – Angle increment
Q: Number of holes
V: Rotation dir. (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)
Example: G746
%746.nc
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
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HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
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