HEIDENHAIN TNC 360 ISO Programming - Manual (Page 98)

5-15 TNC 360
5 Programming Tool Movements
Circles and circular arcs - General information
The TNC can control two machine axes simultane-
ously to move the tool in a circular path.
Circle center I, J, K
You can define a circular movement by entering its
center.
A circle center can also serve as reference (pole) for
polar coordinates.
Direction of rotation
When there is no tangential transition to another
contour element, enter the mathematical direction
of rotation, where
• a clockwise direction of rotation is mathematical-
ly negative: function G02
• a counterclockwise direction of rotation is
mathematically positive: function G03
Fig. 5.19: Direction of rotation for circular movements
Fig. 5.18: Circle center coordinates
Fig. 5.17: Circular arc and circle center
5.4 Path Contours - Cartesian Coordinates
Y
X
Y
X
J
I
Y
X
Z
J
I
Y
X
Z
G02
G03