HEIDENHAIN TNC 426, User Manual

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144 6 Programming: Programming Contours
6.4 P
a
th Cont
ours — Car
tesian Coor
dinat
e
s
Circular path C around circle center CC
Before programming a circular path C, you must first enter the circle
center CC. The last programmed tool position before the C block is
used as the circle starting point.
U
Move the tool to the circle starting point.
U Coordinates of the circle center
U Coordinates of the arc end point
U Direction of rotation DR
Further entries, if necessary:
U
Feed rate F
U
Miscellaneous function M
Example NC blocks
Full circle
Enter the same point you used as the starting point for the end point
in a C block.
5 CC X+25 Y+25
6 L X+45 Y+25 RR F200 M3
7 C X+45 Y+25 DR+
The starting and end points of the arc must lie on the
circle.
Input tolerance: up to 0.016 mm (selected with MP7431).
S E
X
Y
CC
X
Y
25 45
25
CC