HEIDENHAIN TNC 320 (340 55x-05) - Manual (Page 155)

HEIDENHAIN TNC 320 155
5.3 T
ool compensation
Tool radius compensation
The NC block for programming a tool movement contains:
„ RL or RR for radius compensation
„ R+ or R-, for radius compensation in single-axis movements
„ R0 if there is no radius compensation
Radius compensation becomes effective as soon as a tool is called
and is moved with a straight line block in the working plane with RL or
RR
.
For radius compensation, the TNC takes the delta values from both the
TOOL CALL
block and the tool table into account:
Compensation value = R + DR
TOOL CALL
+ DR
TAB
where
Contouring without radius compensation: R0
The tool center moves in the working plane along the programmed
path or to the programmed coordinates.
Applications: Drilling and boring, pre-positioning.
R
R
R0
RL
The TNC automatically cancels radius compensation if
you:
„ program a straight line block with R0
„ depart the contour with the DEP function
„ program a PGM CALL
„ select a new program with PGM MGT.
R Tool radius R from the TOOL DEF block or tool table
DR
TOOL CALL
Oversize for radius DR in the TOOL CALL block (not
taken into account by the position display)
DR
TAB:
Oversize for radius DR in the tool table
Y
X
Z
X
Y