Involute Interpolation (G02.2, G03.2) - Siemens Sinumerik 840D sl Programming Manual

Drive commands
2.1 Interpolation commands
2.1.6

Involute interpolation (G02.2, G03.2)

Overview
The involute of a circle is a curve traced out from the end point on a "piece of string"
unwinding from the curve. The involute interpolation allows trajectories along an involute. It is
executed in the plane in which the base circle is defined. If the starting point and the end
point are not in this plane, then, analogous to the helical interpolation for circles, there is a
superimposition to a curve in space.
An involute can be traversed in space in case of additional specification of paths vertical to
the active plane.
Format
G02.2 X... Y... Z... I... J... K... R
G03.2 X... Y... Z... I... J... K... R
G02.2:
G03.2:
X Y Z:
I J K:
R:
26
Travel on an involute in clockwise direction
Travel on an involute in counterclockwise direction
End point in Cartesian coordinates
Center of the base circle in cartesian coordinates
Radius of the base circle
Programming Manual, 06/09, 6FC5398-7BP10-1BA0
ISO Milling