Siemens Sinumerik 802D sl Programming Manual page 94

Enhanced Level Commands
4.1 Program support functions (1)
Format
G... X... Z... F... ;
G code system A
Straight thread cutting cycle
G... X(U)... Z(W)... F... ;
Fig. 4-5
With the commands indicated above, straight thread cutting cycle 1 to 4, shown in
Fig. 4-6, is executed.
+X
Z
Fig. 4-6
Since G78 (G92, G21) is a modal G code, thread cutting cycle is executed by sim-
ply specifying depth of cut in the X-axis direction in the succeeding blocks. It is not
necessary to specify G78 (G92, G21) repeatedly in these blocks.
4-94
G code system B
G92
W
C
4
3
1
2
B
L
Straight thread cutting cycle
SINUMERIK 802D sl/840D sl840D/840Di sl/840Di/810D ISO Turning -- 04.07 Edition
G code system C
G78
Designation of thread lead (L)
Start point A
Rapid traverse
U
Feed designated
2
by F code
X
2
+Z
Details of thread chamfering
© SIEMENS AG 2007 All rights reserved
04.07
G21
B'
Approx.
45_
B