HEIDENHAIN iTNC 530 (60642x-04) Cycle programming - Manual (Page 119)

HEIDENHAIN iTNC 530 119
4.7 THREAD MILLING/COUNTER
SINK
ING (Cy
c
le 263, DIN/ISO:
G263)
Please note while programming:
Before programming, note the following
Program a positioning block for the starting point (hole
center) in the working plane with radius compensation R0.
The algebraic sign of the cycle parameters thread depth,
countersinking depth or depth at front determines the
working direction. The working direction is defined in the
following sequence:
1 Thread depth
2 Countersinking depth
3 Depth at front
If you program a depth parameter to be 0, the TNC does
not execute that step.
If you want to countersink at front, define the
countersinking depth as 0.
Program the thread depth as a value smaller than the
countersinking depth by at least one-third the thread pitch.
Danger of collision!
Enter in MP7441 bit 2 whether the TNC should output an
error message (bit 2=1) or not (bit 2=0) if a positive depth
is entered.
Keep in mind that the TNC reverses the calculation for pre-
positioning when a positive depth is entered. This
means that the tool moves at rapid traverse in the tool axis
to set-up clearance below the workpiece surface!
Enter in MP7441 bit 0 whether the TNC should output an
error message (bit 0=0) or not (bit 0=1) if spindle rotation
is not active when the cycle is called. The function also
needs to be adapted by your machine manufacturer.