Siemens SINUMERIK 840D, Operating Manual, Page: 270 / 610

Programming technological functions (cycles)
8.1 Drilling
Milling
270
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
Parameters, G code program Parameters, ShopMill program
PL Machining plane T Tool name
RP Retraction plane mm D Cutting edge number
SC Safety clearance mm F Feedrate mm/min
mm/rev
F Feedrate mm/min S / V Spindle speed or constant
cutting rate
rpm
m/min
Parameter Description Unit
Machining
position (only
for G code)
 Single position
Drill hole at programmed position
 Position pattern
Position with MCALL
Z0 (only for G
code)
Reference point Z mm
FR Feedrate during retraction mm/min
Z1 Drilling depth (abs) or drilling depth in relation to Z0 (inc)
It is inserted into the workpiece until it reaches Z1. - (for tip centering only) mm
DT 
Dwell time (at final drilling depth) in seconds
 Dwell time (at final drilling depth) in revolutions
s
rev
8.1.5 Deep-hole drilling (CYCLE83)
Function
With the "Deep-hole drilling" cycle, the tool is inserted in the workpiece with the programmed
spindle speed and feedrate in several infeed steps until the depth Z1 is reached. The
following can be specified:
●
Number of infeed steps constant or decreasing (via programmable degression factor)
● Chip breaking without lifting or swarth removal with tool retraction
● Feedrate factor for 1st infeed to reduce the feedrate or increase the feedrate (e.g. if a
hole has already be predrilled)
● Dwell times
● Depth in relation to drill shank of drill tip