Siemens SINUMERIK 840D Programming Manual page 147

3
12.97
11.02
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.
During the cycle, the workpiece coordinate system is
shifted and rotated. The actual-value display in the
workpiece coordinate system is always displayed
such that the circumferential slot currently being
machined on the 1st axis of the current processing
level starts and the zero point of the workpiece
coordinate system lies in the center of the circle.
When the cycle is completed, the workpiece
coordinate system is again in the same position as it
was before the cycle was called.
Special case: Slot width = cutter diameter
• The machining case of slot width = cutter diameter is
allowed for roughing and finishing. This machining
case occurs if
slot width WID – 2 * final machining allowance FAL =
cutter diameter.
• The traversing strategy is then as for the
LONGHOLE cycle, i.e. depth infeed takes place
alternately at the reversal points, see graphic.
© Siemens AG, 2002. All rights reserved
SINUMERIK 840D/840Di/810D Programming Guide Cycles (PGZ) – 11.02 Edition
3.6 Circumferential slot – SLOT2
Contour violation
2.4.6....
Infeed
3
Milling Cycles
2. Slot
1.3.5.....
Infeed
3-147