Siemens SINUMERIK 840D sl Operating Manual page 161

Parameters
Parameter
PL
RP
SC
Machining
position
Machining
Z0
Drilling depth
Z1
D
FD1
DF
V1
V2
HMI sl Turning
Operating Manual, 01/2008, 6FC5398-7AP10-0BA0
Description
Machining plane:
1)
G17 (XY)
Retraction plane (abs)
Safety clearance (inc)
Single position
•
Drill hole at programmed position.
Position pattern
•
Position with MCALL
Stock removal
•
The drill is retracted from the workpiece for stock removal.
Chipbreaking
•
The drill is retracted by the retraction distance V2 for chipbreaking.
Reference point Z
Shank (drilling depth in relation to the shank)
•
The drill is inserted into the workpiece until the drill shank reaches the value
programmed for Z1. The angle entered in the tool list is taken into account.
Tip (drilling depth in relation to the tip)
•
The drill is inserted into the workpiece until the drill tip reaches the value
programmed for Z1.
Note: If it is not possible to define an angle for the drill in the tool management, it
will not be possible to select tip or shank (always tip, 0 field)
Drilling depth (abs) or drilling depth in relation to Z0 (inc)
1st drilling depth (abs) or 1st drilling depth in relation to Z0 (inc)
Feedrate factor for the first infeed
Infeed:
Amount for each additional infeed
•
Percentage for each additional infeed
•
DF = 100%: Infeed increment remains constant
DF < 100%: Infeed increment is reduced in direction of final drilling depth.
Example: Last infeed was 4 mm; DF is 80%
next infeed = 4 x 80% = 3.2 mm
next infeed = 3.2 x 80% = 2.56 mm etc.
Minimum infeed - (only for DF in %)
Parameter V1 is provided only if DF< 100 has been programmed.
If the infeed increment becomes minimal, 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.
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.
Programming a cycle
4.4 Drilling
Unit
mm
mm
%
mm
%
mm
mm
161