Siemens SINUMERIK 840D sl Operating Manual page 329

Parameter
Machining
Position
X0
Z0
B1
T1
D
UX or U
UZ
N
DP
α1, α2
FS1...FS4 or R1...R4
α0
* Unit of feedrate as programmed before the cycle call
Turning
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
Description
∇ (roughing)

∇∇∇ (finishing)

∇ + ∇∇∇ (roughing and finishing)

Groove position:
Reference point in X ∅
Reference point in Z
Groove width
Groove depth ∅ (abs) or groove depth referred to X0 or Z0 (inc)
Maximum depth infeed for insertion – (only for ∇ and ∇ + ∇∇∇)

For zero: Insertion in a cut – (only for ∇ and ∇ + ∇∇∇)

D = 0: 1. cut is made directly to final depth T1
D > 0: 1st and 2nd cuts are made alternately to infeed depth D, in order to achieve
a better chip flow and prevent the tool from breaking, refer to
approaching/retraction when roughing.
Alternate cutting is not possible if the tool can only reach the groove base at one
position.
Finishing allowance in X or finishing allowance in X and Z – (only for ∇ and ∇ +
∇∇∇)
Finishing allowance in Z – (for UX, only for ∇ and ∇ + ∇∇∇)
Number of grooves (N = 1....65535)
Distance between grooves (inc)
DP is not displayed when N = 1
Flank angle 1 or flank angle 2 - (only for grooves 2 and 3)
Asymmetric grooves can be described by separate angles. The angles can be
between 0 and < 90°.
Chamfer width (FS1...FS4) or rounding radius (R1...R4) - (only for grooves 2 and
3)
Angle of the incline – (only for groove 3)
Programming technology functions (cycles)
8.2 Rotate
Unit
mm
mm
mm
mm
mm
mm
mm
mm
Degrees
mm
Degrees
329