HEIDENHAIN iTNC 530 (34049x-08) Cycle programming - Manual (Page 138)

138 Fixed cycles: tapping / thread milling
4.1
0 OUTSIDE THREAD MILLING (Cy
cle 267
, DIN/ISO:
G267)
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.
 Threads per step Q355:
Number of thread revolutions
by which the tool is moved:
0 = one helical line to the thread depth
1 = continuous helical path over the entire length of
the thread
>1 = several helical paths with approach and
departure; between them, the TNC offsets the tool by
Q355, multiplied by the pitch. Input range 0 to 99999
 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
 Climb or up-cut
Q351: Type of milling operation with
M3
+1 = climb milling
–1 = up-cut milling
Alternatively PREDEF
X
Y
Q207
Q335
X
Z
Q203
Q253
Q201
Q204 Q200
Q239
Q335
Q355 = 1 Q355 > 1 Q355 = 0