Siemens SINUMERIK 840D sl Operating Manual page 416

Programming technological functions (cycles)
8.4 Turning - only for G code programs
Parameter
Position
Machining
direction
X0
Z0
X1
Z1
D
UX
UZ
FS1...FS3 or R1...R3
XM
ZM
α1
α2
* Unit of feedrate as programmed before the cycle call
416
Description
Stock removal position:
Stock removal direction (longitudinal or transverse) in the coordinate system
Parallel to the Z axis (longitudinal)
external
Reference point in X ∅ (abs, always diameter)
Reference point in Z (abs)
End point X (abs) or end point X in relation to X0 (inc)
End point Z ∅ (abs) or end point Z in relation to Z0 (inc)
Maximum depth infeed – (not for finishing)
Finishing allowance in X – (not for finishing)
Finishing allowance in Z – (not for finishing)
Chamfer width (FS1...FS3) or rounding radius (R1...R3) - (not for
stock removal 1)
Parameter selection of intermediate point
The intermediate point can be determined through position specification or angle.
The following combinations are possible - (not for stock removal 1 and 2)
XM ZM
•
XM α1
•
XM α2
•
α1 ZM
•
α2 ZM
•
α1 α2
•
Intermediate point X ∅ (abs) or intermediate point X in relation to X0 (inc)
Intermediate point Z (abs or inc)
Angle of the 1st edge
Angle of the 2nd edge
Parallel to the X axis (transverse)
internal external internal
Operating Manual, 03/2013, 6FC5398-7CP40-3BA1
Unit
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
Degrees
Degrees
Milling