Thread drilling/milling (cycle 264) – HEIDENHAIN iTNC 530 (340 49x-03) Pilot User Manual
Page 60
60
Cyc
les for Drilling, Tappi
n
g and
Thread Mi
lling
THREAD DRILLING/MILLING (Cycle 264)
8
Pre-position to the center of the hole with R0
8
CYCL DEF: Select Cycle 264 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
Total hole depth: Distance between workpiece surface and bottom
of hole: Q356
8
Feed rate for pre-positioning: Q253
8
Type of milling: Q351
Climb: +1
Up-cut: –1
8
Plunging depth: Q202
8
Upper advanced stop distance: Q258
8
Infeed depth for chip breaking: Q257
8
Retraction rate for chip breaking: Q256
8
Dwell time at depth: Q211
8
Sinking depth at front: Q358
8
Countersinking offset at front: Q359
8
Set-up clearance: Q200
8
Workpiece surface coordinate: Q203
8
2. Set-up clearance: Q204
8
Feed rate for plunging: Q206
8
Feed rate for milling: Q207