HEIDENHAIN iTNC 530 (60642x-03) - Manual (Page 210)

210 Programming: Tools
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 If the straight-line
block contains only one coordinate in the tool-axis
direction, then the TNC cancels the radius
compensation but it does not necessarily move
correctly in the working plane.
 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