HEIDENHAIN TNC 370 - Page 245

8
Cycles
. J
8.6 Cycles for Multipass Milling
input data
l STARTING POINT IN 1ST AXIS Q225
(absolute value):
Min. point coordinate of the surface to be
multipass milled in the main axis of the working
plane.
l STARTING POINT IN 2ND AXIS Q226
(absolute value):
Min. point coordinate of the surface to be
multipass milled in the secondary axis of the
working plane.
l STARTING POINT IN 3RD AXIS Q227
(absolute value):
Height in the tool axis to which multipass milling
is carried out.
l FIRST SIDE LENGTH 0218
(incremental value):
Length of the surface to be multipass milled in
the main axis of the working plane, referenced
to the STARTING POINT IN IST AXIS.
l SECOND SIDE LENGTH Q219 (incremental
value):
Width of the surface to be multipass milled in
the secondary axis of the working plane,
referenced to the STARTING POINT IN 2ND
AXIS.
l NUMBER OF CUTS Q240:
Number of passes made over width Y.
l FEED RATE FOR PECKING Q206:
Traversing speed of the tool when moving from
the setup clearance to the milling depth in mm/
min.
l FEED RATE FOR MILLING Q207:
Traversing speed of the tool when milling in
mm/min.
l STEPOVER FEED RATE Q209:
Traversing speed of the tool when moving to
the next pass in mm/min.
If you are moving transversely in the material,
enter Q209 to be less than Q207; if you are
moving transversely in the open, Q209 may be
greater than Q207.
l SET-UP CLEARANCE Q200
(incremental value):
Distance between tool tip and milling depth
during prepositioning at the start of the cycle
and at the end of the cycle.
Y
tt
0218
Elm+
A
$
BP0
03
Em+
X=0225
:
Y=Q226
+
ono
Z=Q227
-g
Q207noo+
c
Fig. 8.62: Input parameters, MULTIPASS MILLING cycle
Fig. 8.63: Input parameters, MULTIPASS MILLING cycle
8-56 TNC 3’9