HEIDENHAIN iTNC 530 (340 49x-03) Pilot - Manual (Page 61)

61
Cyc
les for Drilling, Tappi
n
g and
Thread Mi
lling
HELICAL THREAD DRILLING/MILLING (Cycle 265)
8 Pre-position to the center of the hole with R0
8 CYCL DEF: Select Cycle 265 HELICAL THREAD DRILLING AND MILLING
8 Nominal diameter of the thread: Q335
8 Pitch: Q239
The algebraic sign differentiates between right-hand and left-hand
threads:
Right-hand thread: +
Left-hand thread: –
8 Thread depth: distance between the workpiece surface and the end
of the thread: Q201
8 Feed rate for pre-positioning: Q253
8 Sinking depth at front: Q358
8 Countersinking offset at front: Q359
8 Countersink: Q360
8 Plunging depth: Q202
8 Set-up clearance: Q200
8 Workpiece surface coordinate: Q203
8 2. Set-up clearance: Q204
8 Feed rate for counterboring: Q254
8 Feed rate for milling: Q207