B503
B503 Page 10 840D/828D SINUMERIK Operate
Notes
Section 5
Circular interpolation
Programming example: Explanation:
…..
N40 G00 X30 Y40 Z2
N50 G01 Z-5
N60 G02 X50 Y40 I=AC(40) J=AC(33) Circle centre absolute
N70 G01 Z2 F1000
…..
Particularly the incremental statement of the centre of the circle usually
represents some difficulties to the operator in practice, since it must often
be evaluated using triangle calculations.
This is a prime example of where the mixed coordinate programming of the
interpolation parameters in absolute dimensions comes in useful.
5.2 Circular interpolation with mixed programming
start point
destination point
centre point
X
I
J
40
33
30
40
50
Y
Y
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