Siemens SINUMERIK 840D Operation/Programming

3
Programming with ShopMill 10.04
3.8 Millin
g
3
 Siemens AG, 2004. All rights reserved
3-268 SINUMERIK 840D/840Di/810D Operation/Programming ShopMill (BAS) – 10.04 Edition
DZ Max. depth infeed (Z direction) (not for chamfer) mm
UXY Finishing allowance in plane (pocket edge) (not for chamfer) mm
UZ Finishing allowance in depth (pocket base) (not for chamfer) mm
Insertion You can select one of several insertion strategies:
Helical: Insertion along helical path
The cutter center point traverses along the helical path determined by the radius and
depth per revolution. If the depth for one infeed has been reached, a full circle motion
is executed to eliminate the inclined insertion path.
Oscillation: Insertion with oscillation along center axis of pocket
The cutter center point oscillates along a linear path until it reaches the depth infeed.
When the depth has been reached, the path is traversed again without depth infeed
in order to remove the slope caused by insertion.
Center: Insert vertically in center of pocket
The tool executes the calculated depth infeed vertically in the center of the pocket.
Note: This setting can be used only if the cutter can cut across center or if the pocket
has been predrilled.
EP Max. insertion gradient (only for helical insertion)
The gradient of the helix may be smaller in some geometric conditions.
mm/rev
ER Insertion radius (only for helical insertion)
The radius must not be larger than the cutter radius, otherwise material will remain.
A
lso make sure the pocket is not violated.
mm
EW Insertion angle (for insertion with oscillation only) Degr.
FZ Depth infeed rate (for insertion in center only) mm/min
mm/tooth
Remove stock
Complete mach.:
The pocket must be milled from a solid workpiece (e.g. casting).
Remachining:
A
small pocket or hole has already been machined in the workpiece. This needs to
be enlarged in one or several axes. You must program parameters AZ, W1 and L1
for this purpose.
FS Chamfer width (for chamfer only), inc. mm
ZFS Insertion depth tool tip (for chamfer only), abs. or inc. mm
A
Z Depth of premachined pocket (for remachining only) mm
W1 Width of premachined pocket (for remachining only) mm
L1 Length of premachined pocket (for remachining only) mm

Siemens SINUMERIK 840D Specifications

General

Series	SINUMERIK 840D
Axes	Up to 31
Channels	Up to 10
Operating System	Windows-based
Power Supply	24 V DC
Control Unit Type	CNC
Interface	Ethernet, PROFIBUS
Display	TFT color display
Interpolation	Spline
PLC	Integrated PLC
Data Storage	CompactFlash, USB