HEIDENHAIN TNC 620 Programming Station

Tools | Tool compensation
4
Tool radius compensation
An NC block can contain the following types of tool radius
compensation:
RL or RR for radius compensation of any contouring function
R0, if there is no radius compensation
R+ lengthens a paraxial movement by the amount of the tool
radius
R- shortens a paraxial movement by the amount of the tool
radius
The control shows an active tool compensation in the
general status display.
The radius compensation takes effect as soon as a tool is called
and is moved with one of the abovementioned types of tool radius
compensation within a straight-line block or within a paraxial
movement in the working plane.
The control automatically cancels radius compensation
in the following cases:
Straight-line block with R0
DEP function for departing from the contour
Selection of a new NCprogram via PGM MGT
For radius compensation, the control takes the delta values from
both the TOOL CALL block and the tool table into account:
Compensation value = R + DR
TAB
+ DR
Prog
with
R: Tool radius R from TOOL DEF block or tool table
DR
TAB
: Oversize for radius DR in the tool table
DR
Prog
: Oversize DR for radius from TOOL CALL block or
from the compensation table
Further information: "Compensation table",
Page 398
Movements without radius compensation: R0
The tool center moves in the working plane to the programmed
coordinate.
Applications: Drilling and boring, pre-positioning
134
HEIDENHAIN | TNC620 | Klartext Programming User's Manual | 01/2022