HEIDENHAIN TNC 426 (280 476) Pilot - Manual (Page 49)

50
Cycles
for
Machining
Holes
and
Threads
TAPPING WITH CHIP BREAKING (209)
• The machine and TNC must be prepared for the TAPPING
WITH CHIP BREAKING cycle by the machine tool builder!
• This cycle requires a position-controlled spindle!
CYCL DEF: Select Cycle 209 TAPPING W/ CHIP BRKG .
Set-up clearance: Q200
Thread depth: Thread length = Distance between workpiece
surface and thread termination: Q201
Thread pitch: Q239
The algebraic sign determines the direction of the thread:
• Right-hand thread: +
• Left-hand thread: –
Coordinate of top of workpiece: Q203
2nd set-up clearance: Q204
Infeed depth for chip breaking: Q257
Retraction distance for chip breaking: Q256
Angle for spindle orientation: Q336
Z
X
Q203
Q204
Q200
Q201
Q239