Siemens SINUMERIK 840D Programming Manual page 147

03.96
3
_VARI (machining mode)
You can define the type of machining with parameter
_VARI.
Possible values are:
Units position:
• 1=Roughing
• 2=Finishing
Tens digit (infeed):
• 0=Perpendicular to the pocket center with G0
• 1=Perpendicular to the pocket center with G1
• 2=Along an helical path
• 3=Oscillating along the pocket longitudinal axis
If another value has been programmed for
parameter _VARI, the cycle is aborted after alarm
61002 "Machining type incorrectly defined" is output.
_MIDA (max. infeed width)
With this parameter you define the maximum infeed
width for solid machining in the plane. In the same
way as the known calculation of the infeed depth
(equal distribution of the overall depth using the
largest possible value), the width is evenly divided,
using the value programmed in _MIDA as a
maximum value.
If this parameter is not programmed, or if its value is
0, the cycle uses 80% of the mill diameter as
maximum infeed width.
Further notes
Applies if the width infeed determined from edge
machining is recalculated on reaching the full pocket
depth; otherwise, the width infeed calculated at the
start is retained for the full cycle.
_AP1, _AP2, _AD (blank dimension)
With the parameters _AP1, _AP2 and _AD you
define the blank dimension (incremental) of the
pocket in the horizontal and vertical planes.
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SINUMERIK 840D/840Di/810D/FM-NC Programming Guide, Cycles (PGZ) - 04.00 Edition
3.9 Milling rectangular pockets - POCKET3
Milling Cycles
3
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