Siemens Sinumerik 840D Operating Turning page 30

Section 5
Notes
B500
B500
Milling
I Circle centre point in X-direction (abs or inc)
J Circle centre point in Y-direction (abs or inc)
Circular
Full circle
pattern
The circular slots are positioned on a full cir-
cle. The distance of one circular slot to the
(Circular
next circular slot is always the same and is
slot)
determined by the control unit.
Pitch circle
The circular slots are positioned on a pitch
circle. The distance of one circular slot to the
next circular slot can be determined by
means of angle α2.
L1 Length of the pre-machining
(Rectangular (only for further machining)
pocket)
L1
Length of the raw material spigot
(Rectangular (only for further machining)
spigot)
L1 Approach length
(Path milling) (only for approach "Straight")
L2 Leaving length
(Path milling) (only for leaving "Straight")
L2 (abs) Distance between pole and circle centre
(Circle) point
(inc) Distance between the last point and circle
centre point
L Length of pocket, spigot, slot, straight
Location of Location of the thread:
the thread
Internal thread
(Thread-
milling)
An internal thread is milled
External thread
An external thread is milled
Page 28
Unit
mm
mm
mm
mm
mm
mm
mm
mm
mm
840D/828D SINUMERIK Operate