HEIDENHAIN MANUALplus 620 89
2.6 Units—Predrilling in C axis
Cycle form
JK Milling location
0: On the contour
1: Within the contour
2: Outside the contour
H Mill cutting direction
0: Up-cut milling
1: Climb milling
I Contour-parallel oversize
K Infeed-direction oversize
R Approach radius
WB Cutter diameter
NF Position mark
E Delay (dwell time at end of hole) (default: 0)
D Retraction at
0: Rapid traverse
1: Feed rate
V Feed rate reduction
0: Without reduction
1: At end of the hole
2: At start of the hole
3: At start and end of the hole
AB Spot drilling / through drilling length (distance for feed rate
reduction)
RB Return plane (default: return to the starting position or to
the safety clearance)
Further forms: see page 46