HEIDENHAIN CNC Pilot 4290 V7.1 Description of B and Y axes - Manual (Page 25)

HEIDENHAIN CNC PILOT 4290 25
1
.5 DIN PLUS: Cont
ours in the XY Plane
Circular arc G172/G173 Geo
G172/G173 defines a circular arc in a contour of the XY plane. Direction
of rotation: See help graphic
Parameters
X
End point (radius)
Y End point
I Center in X direction (radius)
J Center in Y direction
R Radius
B Chamfer/rounding. Defines the transition to the next contour
element. When entering a chamfer/rounding, program the
theoretical end point.
„ No entry: Tangential transition
„ B=0: No tangential transition
„ B>0: Rounding radius
„ B<0: Chamfer width
Q Point of intersection. End point if the line segment intersects
a circular arc (default: 0):
„ For a transition to a line segment:
„ Q=0: Near point of intersection
„ Q=1: Far point of intersection
„ For a transition to a circular arc:
„ Q=0: Far point of intersection
„ Q=1: Near point of intersection
Programming
„ X, Y: Absolute, incremental, modal or “?”
„ I, J: Absolute or incremental
„ End point must not be the starting point (no full circle).