HEIDENHAIN CNC PILOT 640 - Circular Arc in XY Plane G172-;G173-Geo

DIN/ISO Programming for the Y axis | Contours in the XY plane
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HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
Circular arc in XY plane G172-/G173-Geo
G172 and G173 define a circular arc in a contour of the XY plane.
Parameters:
X: Final point (radius)
Y: Final point
R: Radius
I: Center in X direction (radius)
J: Center (in Y)
Q: Intersect. pt. or Final point if the line segment intersects a
circular arc (default: 0)
0: Near point of intersection
1: Far point of intersection
BR: Chamf./round. – defines the transition to the next contour
element
When entering a Chamf./round., program the theoretical end
point.
No entry: Tangential transition
BR = 0: No tangential transition
BR > 0: Rounding radius
BR < 0: Width of chamfer
PZ: Final point (polar radius; reference: workpiece datum)
W: Final point (polar angle; reference: workpiece datum)
PM: Center (polar radius; reference: workpiece datum)
WM: Center (polar angle; reference: workpiece datum)
AR: Start angle – tangential angle to rotary axis
AN: Final angle – tangential angle to rotary axis
Programming:
X, Y: Absolute, incremental, modal or ?
I, J: Absolute or incremental
PZ, W, PM, WM: Absolute or incremental
ANi: Angle to the subsequent element
ARi: Angle to the previous element
End point must not be the starting point (no full
circle)