Siemens SINUMERIK 840D, Operating Manual, Page: 393 / 610

Programming technological functions (cycles)
8.5 Contour turning - only for G code programs
Milling
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
393
Parameters Description Unit
Constant cutting depth
Alternating cutting depth - (only with align cut segmentation to edge)
DZ Maximum depth infeed - (only for position parallel to the contour and UX) mm
UX or U Finishing allowance in X or finishing allowance in X and Z – (only for ∇) mm
UZ Finishing allowance in Z – (only for UX) mm
DI For zero: Continuous cut - (only for ∇) mm
BL Description of unmachined part
 Cylinder
 Allowance

Contour
XD - (only for unmachined part description, cylinder and allowance)

For unmachined part description, cylinder
–
Allowance or cylinder dimension ∅ (abs)
– Allowance or cylinder dimension (inc)
 For unmachined part description, allowance
–
Allowance on the contour ∅ (abs)
– Allowance on the contour (inc)
mm
ZD - (only for unmachined part description, cylinder and allowance)

For unmachined part description, cylinder
Allowance or cylinder dimension (abs or inc)

For unmachined part description, allowance
Allowance on the contour (abs or inc)
mm
Allowance Allowance for pre-finishing - (only for ∇∇∇)

Yes
U1 contour allowance

No
U1 Compensation allowance in X and Z direction (inc) – (only for allowance)

Positive value: Compensation allowance is kept

Negative value: Compensation allowance is removed in addition to finishing
allowance
mm
Set machining area
limits
Set machining area limits

Yes
–
XA: 1. Limit XA ∅
– XB: 2nd limit XB ∅ (abs) or 2nd limit referred to XA (inc)
– ZA: 1. Limit ZA
– ZB: 2nd limit ZB (abs) or 2nd limit referred to ZA

No
Relief cuts Machine relief cuts

Yes

No
FR Insertion feedrate, relief cuts