Pocket Milling With Islands - Cycle73, Cycle74, Cycle75 (Sw 5.2 And Later) - Siemens SINUMERIK 840D Programming Manual

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3.15 Pocket milling with islands - CYCLE73, CYCLE74, CYCLE75
3.15 Pocket milling with islands - CYCLE73, CYCLE74, CYCLE75
(SW 5.2 and later)
Pocket milling with islands is an option and requires
SW 5.2 in both the NCK and MMC 103.
Precondition
To use the pocket milling cycle with islands, the
machine data below must be set as follows
(minimum requirement):
• MD 18120: MM_NUM_GUD_NAMES_NC 20
• MD 18150: MM_GUD_VALUES_MEM
Function
Cycles CYCLE73, CYCLE74 and CYCLE75 enable you
to machine pockets with islands.
The contours of the pocket and islands are defined in
DIN code in the same program as the pocket machining
operation or as a subroutine.
Cycles CYCLE74 and CYCLE75 transfer the pocket
edge contour or island contours to CYCLE73, the actual
pocket milling cycle.
CYCLE73 uses a geometry processor to create a
machining program which it then executes. To ensure
correct program processing, it is important to program
cycle calls in the proper sequence.
• CYCLE74( )
• CYCLE75( )
• CYCLE75( )
• ...
• CYCLE73( )
 Siemens AG 2000 All rights reserved.
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide, Cycles (PGZ) - 04.00 Edition
80
;Transfer edge contour
;Transfer island contour 1
;Transfer island contour 2
;Machine pocket
Milling Cycles
3
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