HEIDENHAIN TNC 320 (340 55x-03) - Manual (Page 155)

HEIDENHAIN TNC 320 155
6.4 P
a
th Cont
ours—Car
te
sian 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.
 Move the tool to the circle starting point.
 Coordinates of the circle center
 Coordinates of the arc end point
 Direction of rotation DR, and if necessary:
 Feed rate F
 Miscellaneous function M
Example NC blocks
Full circle
For the end point, enter the same point that you used for the starting
point.
S E
X
Y
CC
X
Y
25 45
25
CC
DR+
DR–
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 through the
circleDeviation
machine parameter).
Smallest possible circle that the TNC can traverse:
0.0016 µm.