Siemens Sinumerik 840D Operating Turning page 21

Milling
Lifting Lifting mode before a renewed infeed
mode
If for the machining several plunging points are
(Centring) required, the retraction heights can be pro-
grammed:
to the retraction plane
Z0 + safety gap
Lifting
If several depth infeeds are required, the re-
mode traction height to which the tool is retracted
between the individual infeeds must be stated
(Path milling) (at the transition between the end of the con-
tour to the beginning).
Lifting mode before a renewed infeed
No retraction
to RP
Z0 + safety gap
by safety gap
Lifting Lifting mode before renewed infeed
mode
If for the machining several plunging points are
(Pre-drilling required, the retraction heights can be pro-
centring) grammed:
(Pocket
milling)
to RP
Z0 + safety gap
X0 + safety gap
840D/828D SINUMERIK Operate
Unit
mm
mm
mm
Page 19
Section 5
Notes
B500
B500