HEIDENHAIN SW 68894x-02 - Manual (Page 532)

532 Organization mode of operation
8.2
Pa
ra
met
ers
Centric predrilling – Machining
Roughing
Roughing – Tool standards
Furthermore:
 Roughing cycles are primarily executed with standard roughing
tools.
 Alternatively, tools that allow full-surface machining are used.
Machining
Drilling depth ratio [BTV]
TURN PLUS checks the 1st and 2nd drilling steps. The
predrilling step is performed with:
BTV <= BT / dmax
Drilling depth factor [BTF]
1st drilling depth for deep-hole drilling cycle (G74):
bt1 = BTF * db
Depth reduction [BTR]
Reduction for deep-hole drilling cycle (G74):
bt2 = bt1 – BTR
Overhang length – Predrilling [ULB]
Through-drilling length
Tool standards
 Tool angle – external/longitudinal [RALEW]
 Point angle – external/longitudinal [RALSW]
 Tool angle – external/transverse [RAPEW]
 Point angle – external/transverse [RAPSW]
 Tool angle – internal/longitudinal [RILEW]
 Point angle – internal/longitudinal [RILSW]
 Tool angle – internal/transverse [RIPEW]
 Point angle – internal/transverse [RIPSW]