Siemens SINUMERIK 840D sl Operating Manual page 308

Programming technological functions (cycles)
8.1 Drilling
Parameter Description
V1 Minimum infeed - (only for DF in %)
Parameter V1 is only provided if DF<100 has been programmed.
If the infeed increment becomes very small, a minimum infeed can be programmed in
parameter "V1".
V1 < Infeed increment: The tool is inserted by the infeed increment
V1 > Infeed increment: The tool is inserted by the infeed value programmed under V1.
V2 Retraction distance after each machining step – (for chipbreaking only)
Distance by which the drill is retracted for chipbreaking.
V2 = 0: The tool is not retracted but is left in place for one revolution.
Clearance
Manual
•
distance
The clearance distance must be entered manually.
(for stock removal
Automatic
•
only)
The clearance distance is calculated by the cycle.
DTB - (only for G
Dwell time at drilling depth in seconds
•
code)
Dwell time at drilling depth in revolutions
•
DT
Dwell time at final drilling depth in seconds
•
Dwell time at final drilling depth in revolutions
•
DTS - (only for G
Dwell time for stock removal in seconds
•
code)
Dwell time for stock removal in revolutions
•
308
Operating Manual, 03/2013, 6FC5398-7CP40-3BA1
Unit
mm
mm
s
rev
s
rev
s
rev
Milling