HEIDENHAIN CNC Pilot 4290 Pilot - Manual (Page 12)

12
Basic elements f
o
r
cont
our descr
iption
Example: G2-Geo
Circular arc in a contour
G2/G3-Geo – incremental, G12/G13-Geo – absolute center
coordinates
G2/G3 or G12/G13 defined a circular arc in a contour. The direction of
rotation is visible in the help graphic.
Parameters
X, Z: End point (X diameter value)
R:
Radius
Q: Selection of intersection – default: 0
■ Q=0: Far intersection
■ Q=1: Near intersection
B: Chamfer/ rounding at end of circular arc
■ B no entry: tangential transition
■ B=0: no tangential transition
■ B>0: Radius of rounding
■ B<0: Width of chamfer
E: Special feed-rate factor (0 < E † 1) – default: 1
(special feed rate = active feed rate * E)
With G2/G3:
I:
Center point incremental (distance from starting point to center
as radius)
K: Center point incremental (distance from starting point to center)
With G12/G13:
I:
Absolute center (radius)
K: Absolute center
Example: G12-Geo