Siemens SINUMERIK 828D Operating Manual page 270

Programming technological functions (cycles)
8.2 Milling
Parameters, G code program
PL Machining plane
Milling direction
RP Retraction plane
SC Safety clearance
F Feedrate
Parameters Description
∇ (roughing)
Machining •
∇∇∇ (finishing)
•
Machining direction:
Z0 → Z1
•
Machining from top to bottom
Z1 → Z0
•
Machining from bottom to top
Direction of rotation of the thread:
Right-hand thread
•
A right-hand thread is cut.
Left-hand thread
•
A left-hand thread is cut.
Position of the thread:
Inside thread
•
An inside thread is cut.
Outside thread
•
An outside thread is cut.
NT Number of teeth per cutting edge
Single or multiple toothed milling inserts can be used. The motions required are
executed by the cycle internally, so that the tip of the bottom tooth on the milling insert
corresponds to the programmed end position when the thread end position is reached.
Depending on the cutting edge geometry of the milling insert, the retraction path must
be taken into account at the base of the workpiece.
Machining position:
(only for G code)
Single position
•
Position pattern (MCALL)
•
The positions refer to the center point:
X0 Reference point X – (for single position only)
Y0 Reference point Y – (for single position only)
Z0 Reference point Z
(only for G code)
Z1 End point of the thread (abs) or thread length (inc)
270
Parameters, ShopMill program
T
D
mm F
mm S / V
mm/min
Tool name
Cutting edge number
Feedrate
Spindle speed or constant
cutting rate
Operating Manual, 06/2009, 6FC5398-7CP20-0BA0
mm/min
mm/rev
rpm
m/min
Unit
mm
mm
mm
mm
HMI sl Milling