Tool offsets
8.11 Smooth approach and retraction
Fundamentals
Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
373
• With G341: The whole approach contour consists of three blocks (P
2
and P
3
are
combined). If P
0
and P
4
are on the same plane, only two blocks result (infeed movement
from P
1
to P
3
is omitted).
• The point defined by DISCL is monitored to ensure that it is located between P
1
and P
3
,
i.e., the sign must be identical for the component perpendicular to the machining plane in
all motions that possess such a component.
• On detection of a direction reversal, a tolerance defined by the machine data
SAR_CLEARANCE_TOLERANCE is permitted.
Programming the end point P4 for approach or P0 for retraction
The end point is generally programmed with X... Y... Z...
• Programming during approach
– P
4
in SAR block
– P
4
is defined by the end point of the next traversing block.
Other blocks can be inserted between the SAR block and the next traversing block
without moving the geometry axes.
Example:
$TC_DP1[1.1]= 120
;Milling tool T1/D1
$TC_DP6[1.1]=7
;Tool with 7 mm radius
N10 G90 G0 X0 Y0 Z30 D1 T1
N20 X10
N30 G41 G147 DISCL=3 DISR=13 Z=0
F1000
N40 G1 X40 Y-10
N50 G1 X50
...
...
N30/N40 can be replaced by:
1.
N30 G41 G147 DISCL=3 DISR=13 X40
Y-10 Z0 F1000
Or
2.
N30 G41 G147 DISCL=3 DISR=13
F1000
N40 G1 X40 Y-10 Z0
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