HEIDENHAIN iTNC 530 (34049x-08) Cycle programming - Manual (Page 134)

134 Fixed cycles: tapping / thread milling
4.9
HELICAL
THREAD
DRILLING/MI
LLING (Cy
cle 265, DIN/ISO:
G265)
Cycle parameters
 Nominal diameter
Q335: Nominal thread diameter.
Input range 0 to 99999.9999
 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
 Thread depth
Q201 (incremental): Distance between
workpiece surface and root of thread. Input range
-99999.9999 to 99999.9999
 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,
PREDEF
 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
 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
 Countersink
Q360: Execution of the chamfer
0 = before thread machining
1 = after thread machining
 Set-up clearance
Q200 (incremental): Distance
between tool tip and workpiece surface. Input range
0 to 99999.9999; alternatively PREDEF
X
Y
Q207
Q335
X
Z
Q203
Q253
Q239
Q201
Q204
Q200
X
Z
Q359
Q358