HEIDENHAIN MANUALplus 620 389
5.2 Contours in the XY Plane
Circular arc in XY plane G172-Geo/G173-Geo
G172/G173 defines a circular arc in a contour of the XY plane. Direction
of rotation: See help graphic
Parameters
X Final point (radius)
Y Final point
R Radius
I Center in X direction (radius)
J Center in Y direction
Q Point of intersection. End point if the circular arc intersects a
line segment or another circular arc (default: 0):
0: Near point of intersection
1: Far point of intersection
BR Chamfer/rounding. Defines the transition to the next contour
element. When entering a chamfer/rounding, program the
theoretical end point.
No entry: Tangential transition
BR=0: No tangential transition
BR>0: Rounding radius
BR<0: Width of chamfer
Programming
X, Y: Absolute, incremental, modal or “?”
I, J: Absolute or incremental
End point must not be the starting point (no full circle).
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