HEIDENHAIN TNC 620 User Manual page 258

6
Contouring with radius compensation: RR and RL
RR:
The tool moves to the right of the programmed contour
RL:
The tool moves to the left of the programmed contour
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.
Between two NC 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 control does not put radius compensation into effect
until the end of the block in which it is first programmed.
When radius compensation is activated with RR/RL
or canceled with R0 the control 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.
Entering radius compensation
Radius compensation is entered in an
coordinates of the target point and confirm your entry with the ENT
key.
Radius comp.: RL/RR/no comp.?
Select tool movement to the left of the contour:
Press the RL soft key, or
Select tool movement to the right of the contour:
Press the RR soft key, or
Select tool movement without radius
compensation or cancel radius compensation:
Press the ENT key
Terminate the block: Press the END key
258
L block. Enter the
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2017
Tools | Tool compensation