HEIDENHAIN TNC 640 (34059x-01) Cycle programming - Manual (Page 122)

122 Fixed Cycles: Tapping / Thread Milling
4.1
0
OUTSIDE THREAD MILLING (Cy
c
le 267
, DIN/ISO: G267)
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.
U 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
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
X
Y
Q207
Q335
X
Z
Q203
Q253
Q201
Q204 Q200
Q239
Q335
Q355 = 1 Q355 > 1 Q355 = 0