Siemens SINUMERIK 840D sl Turning Operating Manual page 450

Programming technology functions (cycles)
10.3 Contour turning
Parameters
Undercut
Chamfer
CA
Additional commands
Contour element "Straight line e.g. X"
Parameters
X
α1
α2
Transition to next ele‐
ment
Radius
Undercut
Chamfer
CA
Additional commands
450
Description
Form E Undercut size
e.g. E1.0x0.4
Form F Undercut size
e.g. F0.6x0.3
DIN thread P Thread pitch
α Insertion angle
Thread Z1 Length Z1
Z2 Length Z2
R1 Radius R1
R2 Radius R2
T Insertion depth
FS Transition to following element - chamfer
Grinding allowance
● Grinding allowance to right of contour
● Grinding allowance to left of contour
Additional G code commands
Description
End point X ∅ (abs) or end point X (inc)
Starting angle to Z axis
Angle to the preceding element
Type of transition
● Radius
● Undercut
● Chamfer
R Transition to following element - radius
Form E Undercut size
e.g. E1.0x0.4
Form F Undercut size
e.g. F0.6x0.3
DIN thread P Thread pitch
α Insertion angle
Thread Z1 Length Z1
Z2 Length Z2
R1 Radius R1
R2 Radius R2
T Insertion depth
FS Transition to following element - chamfer
Grinding allowance
● Grinding allowance to right of contour
● Grinding allowance to left of contour
Additional G code commands
Operating Manual, 06/2019, A5E44903486B AB
Unit
mm/rev
Degrees
mm
mm
mm
mm
mm
mm
mm
Unit
mm
Degrees
Degrees
mm
mm/rev
Degrees
mm
mm
mm
mm
mm
mm
mm
Turning