Siemens SINUMERIK 840D Programming Manual page 125

03.96
04.00
3
If another value is programmed for the parameter
VARI, the cycle aborts after output of the alarm
61102 "Operating mode not defined correctly".
_FALD (final machining allowance on slot base)
A separate final machining allowance on the base is
taken into account in roughing operations.
_STA2 (insertion angle)
Parameter _STA1 defines the maximum insertion
angle for the oscillation motion.
• Vertical insertion (VARI=0X, VARI=1X)
Vertical depth insertion is always performed at the
same position on the machining plane down to the
final depth of the slot.
• Insertion with oscillation on the center axis of
the slot (VARI=3X)
means that the mill center point oscillates along an
oblique linear path until it has reached the next
current depth. The maximum insertion angle is
programmed under _STA2, the length of the
oscillation path is calculated from
LENG-WID.
The oscillating depth infeed ends at the same point
as with vertical depth infeed motions, the starting
point in the plane is calculated accordingly. The
roughing operation begins in the plane once the
current depth is reached. The feedrate is
programmed under _FFD.
Further notes
A tool offset must be activated before the cycle is
called. Otherwise the cycle is aborted and alarm
61000 "No tool offset active" is output.
If incorrect values are assigned to the parameters
that determine the arrangement and size of the slots
and thus cause mutual contour violation of the slots,
the cycle is not started. The cycle is aborted after the
error message 61104 "Contour violation of
slots/elongated holes" is output.
 Siemens AG 2000 All rights reserved.
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide, Cycles (PGZ) - 04.00 Edition
3.5 Slots on a circle - SLOT1
Contour violation
Milling Cycles
3
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