HEIDENHAIN TNC 410 - Manual (Page 87)

74 6 Programming: Programming Contours
Departing tangentially on a circular arc: DEP CT
The tool moves on a circular arc from the last contour point P
E
to
the end point P
N
. The arc is tangentially connected to the last
contour element.
ú Program the last contour element with the end point P
E
and
radius compensation.
ú Initiate the dialog with the APPR/DEP key and DEP CT soft key:
ú Center angle CCA of the arc
ú Radius R of the circular arc
■ If the tool should depart the workpiece in the direction
of the radius compensation (i.e. to the right with RR or
to the left with RL):
Enter R as a positive value.
■ If the tool should depart the workpiece on the
direction opposite to the radius compensation:
Enter R as a negative value.
Example NC blocks
23 L Y+20 RR F100
24 DEP CT CCA 180 R+8 F100
25 L Z+100 FMAX M2 Last contour element: P
E
with radius compensation
Center angle=180°, arc radius= 8 mm
Retract in Z, return to block 1, end program
X
Y
20
P
N
R0
P
E
RR R8 180°
RR
6.3 Cont
our
Appr
oac
h and Depar
tu
re