HEIDENHAIN iTNC 530 211
6.3 Contour Approach and Departure
Polar coordinates
You can also program the contour points for the following
approach/departure functions over polar coordinates:
îš„ APPR LT becomes APPR PLT
îš„ APPR LN becomes APPR PLN
îš„ APPR CT becomes APPR PCT
îš„ APPR LCT becomes APPR PLCT
îš„ DEP LCT becomes DEP PLCT
Select by soft key an approach or departure function, then press the
orange P key.
Radius compensation
The tool radius compensation is programmed together with the first
contour point P
A
in the APPR block. The DEP blocks automatically
discard the tool radius compensation.
Contour approach without radius compensation: If you program the
APPR block with R0, the TNC will calculate the tool path for a tool
radius of 0 mm and a radius compensation RR! The radius
compensation is necessary to set the direction of contour approach
and departure in the APPR/DEP LN and APPR/DEP CT functions. In
addition, you must program both coordinates in the working plane in
the first traverse block after APPR.
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