HEIDENHAIN TNC 360 ISO Programming - Manual (Page 101)

5-18
5 Programming Tool Movements
TNC 360
Fig. 5.23: A circular arc from S to E
around I, J
Fig. 5.25: Coordinates of a circular arc Fig. 5.24: Full circle around I, J with a
G02 block
5.4 Path Contours - Cartesian Coordinates
I, J
E
S
Y
X
E
S
J
I X
S
X
E
Y
E
Y
S
Y
X
I, J
S E
Circular path G02/G03/G05 around the circle center I, J, K
Prerequisites
The circle center I, J, K must have been previously defined in the program.
The tool is located at the arc starting point
S .
Defining the direction of rotation
You can program the following directions of rotation:
• Clockwise rotation G02
• Counterclockwise rotation G03
• No direction of rotation defined G05
The tool moves in the direction of rotation
defined in an earlier block.
Input
• Arc end point
The starting and end points of the arc must lie on the circle.
Input tolerance: up to 0.016 mm
• To program a full circle, enter the same position for the end point as for
the starting point in a G02/G03 block.