Siemens Sinumerik 802D sl Programming Manual page 77

04.07
Outline of tool nose radius compensation movements
Fig. 3-15 shows how the tool nose radius compensation function is executed.
Offset cancel (G40) block
(in the G01 mode)
Fig. 3-15
S In the offset cancel state, the imaginary tool nose position 7 agrees with the
point specified in the program 1.
S In the offset mode, the center of nose R is offset by the nose R amount from
the programmed paths and it follows the offset paths. Therefore, the imaginary
tool nose position does not agree with the programmed point. Note that the pre-
sent position display shows the position of the imaginary tool nose.
S At the offset start-up block 1 and cancel block 6, the movements to link the
compensation mode and compensation cancel mode are inserted. Therefore,
special attention must be paid for specifying the offset start-up and cancel
blocks.
Notice
1. The nose R offset function can be used for circular interpolation specified by
radius designation.
2. It is allowed to specify a subprogram (M98, M99) in the offset mode. The nose
R offset function is applied to the programmed shape which is offset by the tool
position offset function.
© SIEMENS AG 2007 All rights reserved
SINUMERIK 802D sl/840D sl840D/840Di sl/840Di/810D ISO Turning - - 04.07 Edition
6
5
+X
4
3
+Z
Outline of tool nose radius compensation movements (G42, control point 3)
Movement Control Commands
3.4 Tool offset functions
7
Offset cancel state
Offset start-up (G42) block
1
(in the G00 mode)
2
Programmed paths
Imaginary tool nose
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