Contour Turning; General Information - Siemens SINUMERIK 840D sl Operating Manual

Parameter
X1
FR
(only for ShopTurn)
FR
(only for G code)
SR
X2
* Unit of feedrate as programmed before the cycle call
10.3

Contour turning

10.3.1

General information

Function
You can machine simple or complex contours with the "Contour turning" cycle. A contour
comprises separate contour elements, whereby at least two and up to 250 elements result in
a defined contour.
You can program chamfers, radii, undercuts or tangential transitions between the contour
elements.
The integrated contour calculator calculates the intersection points of the individual contour
elements taking into account the geometrical relationships, which allows you to enter
incompletely dimensioned elements.
When you machine the contour, you can make allowance for a blank contour, which must be
entered before the finished-part contour. Then select one of the the following machining
technologies:
● Stock removal
● Grooving
● Plunge-turning
You can rough, remove residual material and finish for each of the three technologies above.
Note
Starting point or end point of the machining outside the retraction planes
For programs with contour machining from earlier software releases, for an NC start, it is
possible that one of the alarms 61281 "Starting point of machining outside retraction planes"
or 61282 "End point of machining outside retraction planes" is output.
In this case, adapt the retraction planes in the program header.
Turning
Operating Manual, 05/2017, A5E40868721
Description
Depth for speed reduction ∅ (abs) or depth for speed reduction in relation to X0 (inc) mm
Reduced feedrate
Reduced speed
Final depth ∅ (abs) or final depth in relation to X1 (inc)
Programming technology functions (cycles)
10.3 Contour turning
Unit
mm/rev
*
rev/min
mm
383