HEIDENHAIN TNC 640 User Manual page 338

11
Cycles: Special Functions | COUPLING INTERPOLATION TURNING (cycle 291, DIN/ISO: G291, software
If you define the turning tool in the turning tool
table (toolturn.trn), we recommend working with
parameter Q561=1. This way, you convert the data
of the turning tool into the data of the milling tool,
thus greatly facilitating your programming effort.
With Q561=1 you can use radius compensation
RR and RL when programming. (However, if you
program Q561=0, then you cannot use radius
compensation RR and RL when describing your
contour. Additionally, you must program the
movement of the tool center path TCP without
spindle coupling. This kind of programming is much
more complicated!)
If you programmed parameter Q561=1, you must
program the following in order to complete the
operation of interpolation turning:
R0, overrides radius compensation
Cycle 291 with parameters Q560=0 and Q561=0,
overrides spindle coupling
CYCLE CALL, for calling Cycle 291
TOOL CALL overrides the conversion of parameter
Q561
If you programmed parameter Q561=1, you may only
use the following types of tools:
TYPE: ROUGH, FINISH, BUTTON with the
machining directions TO: 1 or 8, XL>=0
TYPE: ROUGH, FINISH, BUTTON with the
machining directions TO: 7 , XL<=0
The spindle orientation is calculated as follows:
Machining
Interpolation turning, outside
Interpolation turning, inside
Interpolation turning, outside
Interpolation turning, inside
Interpolation turning, outside
Interpolation turning, inside
338
TO Spindle orientation
1 ORI + Q336
7 ORI + Q336 + 180
7
ORI + Q336 + 180
1
ORI + Q336
8 ORI + Q336
8 ORI + Q336
HEIDENHAIN | User's manual for cycle programming | 10/2017
option 96)