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

3
Milling Cycles
3.15 Pocket milling with islands – CYCLE73, CYCLE74, CYCLE75
3.15 Pocket milling with islands – CYCLE73, CYCLE74, CYCLE75
(SW 5.2 and higher)
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, you
need specific machine data settings.
References: for current infos see:
• the file "siemensd.txt" from the delivery software (standard cycles) or
• for HMI Advanced, F:\dh\cst.dir\HLP.dir\siemensd.txt.
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( )
3-198
;Transfer edge contour
;Transfer island contour 1
;Transfer island contour 2
;Machine pocket
SINUMERIK 840D/840Di/810D Programming Guide Cycles (PGZ) – 11.02 Edition
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12.97
08.99
© Siemens AG, 2002. All rights reserved