HEIDENHAIN TNC 407 (280 580) User Manual - Manual (Page 121)

TNC 425/TNC 415 B/TNC 407 5-22
5 Programming Tool Movements
Fig. 5.30: Coordinates of a circular arc
5.4 Path Contours - Cartesian Coordinates
Fig. 5.28: Circular path from S to E
around CC
CC
E
S
Y
X
CC
E
S
Y
CC
X
CC
X
S
X
E
Y
E
Y
S
Fig. 5.29: Full circle around CC with a
C block
Y
X
CC
S E
Circular path C around the circle center CC
Prerequisites
The circle center CC must have been previously defined in the program.
The tool is located at the circle starting position
S .
Input
• Arc end point
• Direction of rotation DR
The starting and end points of the arc must lie on the circle.
Input tolerance: up to 0.016 mm (selectable with MP 7431).
• To program a full circle, enter the same point for
the end point as for the start point in a C block.