8 Cycles
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8.6 Cycles for Multipass Milling
input data
l
STARTING POINT IN 1ST AXIS Q225
(absolute value):
Starting point coordinate of the surface to be
multipass milled in the main axis of the working
plane.
l
STARTING POINT IN 2ND AXIS 0226
(absolute value):
Starting 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):
Starting point coordinate of the surface to be
multipass milled in the tool axis.
l
2ND POINT IN 1ST AXIS Q228
(absolute value):
Stopping point coordinate of the surface to be
multipass milled in the main axis of the working
plane.
l
2ND POINT IN 2ND AXIS Q229 (absolute value):
y,i
X=Q231
Y=Q232
Z=Q233
+
QQQ
X=Q234
4J
QUO
4+$
@@ ;:g;g
108
4+l0u
69 100
+ 000
X=Q225
Q207+~ 0, ;rz;;,”
4
X
Fig. 8.67: Input parameters, RULED SURFACE cycle
Stopping point coordinate of the surface to be multipass milled in the
secondary axis of the working plane.
l
2ND POINT IN 3RD AXIS Q230 (absolute value):
Stopping point coordinate of the surface to be multipass milled in the
tool axis.
l
3RD POINT IN 1ST AXIS Q231 (absolute value):
Coordinate of point @ in the main axis of the working plane.
l
3RD POINT IN 2ND AXIS Q232 (absolute value):
Coordinate of point @ in the secondary axis of the working plane.
l
3RD POINT IN 3RD AXIS Q233 (absolute value):
Coordinate of point @I in the tool axis.
l
4TH POINT IN 1ST AXIS Q234 (absolute value):
Coordinate of point @ in the main axis of the working plane.
l
4TH POINT IN 2ND AXIS 0235 (absolute value):
Coordinate of point @I in the secondary axis of the working plane.
l
4TH POINT IN 3RD AXIS Q236 (absolute value):
Coordinate of point @ in the tool axis.
l
NUMBER OF CUTS Q240:
Number of passes which are to be made between point @I and
point @, or between point @ and point 0.
l
FEED RATE FOR MILLING Q207:
Traversing speed of the tool when milling the first pass in mm/min.
The TNC calculates the feed rate for all subsequent passes depend-
ent on the stepover factor of the tool (offset less than tool diameter =
higher feed rate, high stepover factor = lower feed rate).
1
-
.d
--
8-58
TNC 370
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