HEIDENHAIN iTNC 530 (340 49x-04) ISO programming - Manual (Page 209)

HEIDENHAIN iTNC 530 209
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 tool 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: G40
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
G40
G41
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 is the tool radius R from the G99 block or tool table
DR
TOOL CALL
is the oversize for radius DR in the T block (not
taken into account by the position display)
DR
TAB
is the oversize for radius DR in the tool table.
Y
X
Z
X
Y