HEIDENHAIN TNC 320 User Manual page 110

Cycle parameters
U
Nominal diameter Q335: Nominal thread diameter.
Input range 0 to 99999.9999
U Thread pitch Q239: Pitch of the thread. The algebraic
sign differentiates between right-hand and left-hand
threads:
+= right-hand thread
– = left-hand thread
Input range -99.9999 to 99.9999
U
Thread depth Q201 (incremental): Distance between
workpiece surface and root of thread. Input range
-99999.9999 to 99999.9999
U Countersinking depth Q356 (incremental): Distance
between tool tip and the top surface of the
workpiece. Input range -99999.9999 to 99999.9999
U Feed rate for pre-positioning Q253: Traversing
speed of the tool in mm/min when plunging into the
workpiece, or when retracting from the workpiece.
Input range 0 to 99999.999; alternatively FMAX,
FAUTO
U Climb or up-cut Q351: Type of milling operation with
M3
+1 = climb milling
–1 = up-cut milling
U Set-up clearance Q200 (incremental): Distance
between tool tip and workpiece surface. Input range
0 to 99999.9999
U Set-up clearance to the side Q357 (incremental):
Distance between tool tooth and the wall of the hole.
Input range 0 to 99999.9999
U Depth at front Q358 (incremental): Distance
between tool tip and the top surface of the workpiece
for countersinking at front. Input range -99999.9999
to 99999.9999
U Countersinking offset at front Q359 (incremental):
Distance by which the TNC moves the tool center
away from the hole center. Input range 0 to
99999.9999
110 Fixed Cycles: Tapping / Thread Milling