HEIDENHAIN TNC 426 (280 476) Pilot - Manual (Page 47)

48
Cycles
for
Machining
Holes
and
Threads
RIGID TAPPING (17) without Floating Tap Holder
• Machine and TNC must be prepared by the machine tool
builder to perform rigid tapping!
• In rigid tapping, the spindle speed is synchronized with the
tool axis feed rate!
CYCL DEF: Select cycle 17 RIGID TAPPING
Set-up clearance: A
Tapping depth (distance between workpiece surface and end
of thread): B
Pitch: C
The algebraic sign determines the direction of the thread:
• Right-hand thread: +
• Left-hand thread: –
TAPPING NEW (206) with Floating Tap Holder
Insert the floating tap holder
CYCL DEF: Select Cycle 206 TAPPING NEW
Set-up clearance: Q200
Depth: thread length = distance between the
workpiece surface and the end of the thread: Q201
Feed rate F = spindle speed S x thread pitch P: Q206
Dwell time at bottom (enter a value between 0 and 0.5 seconds):
Q211
Workpiece surface coordinate: Q203
2nd set-up clearance: Q204
For tapping right-hand threads, actuate the spindle with M3, for
left-hand threads use M4!