HEIDENHAIN iTNC 530 199
5.3 Tool Compensation
Contouring with radius compensation: RR and RL
The tool center moves along the contour at a distance equal to the
radius. “Right” or “left” are to be understood as based on the
direction of tool movement along the workpiece contour. See figures.
RR The tool moves to the right of the programmed contour.
RL The tool moves to the left of the programmed contour.
Between two program blocks with different radius
compensations RR and RL you must program at least one
traversing block in the working plane without radius
compensation (that is, with R0).
The TNC does not put radius compensation into effect
until the end of the block in which it is first programmed.
You can also activate the radius compensation for
secondary axes in the working plane. Program the
secondary axes too in each following block, since
otherwise the TNC will execute the radius compensation
in the principal axis again.
In the first block in which radius compensation is activated
with RR/RL or canceled with R0 the TNC always positions
the tool perpendicular to the programmed starting or end
position. Position the tool at a sufficient distance from the
first or last contour point to prevent the possibility of
damaging the contour.
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