Polar Coordinates - Siemens SINUMERIK 840D sl Operating Manual

Parameters
X
Z
R
F
10.7.14

Polar coordinates

If a workpiece has been dimensioned from a central point (pole) with radius and angles, you
will find it helpful to program these dimensions as polar coordinates.
Before you program a straight line or circle in polar coordinates, you must define the pole, i.e.
the reference point, of the polar coordinate system.
Procedure
Turning
Operating Manual, 05/2017, A5E40868721
Description
Machining plane rotation
Target position X ∅ (abs) or target position Y referred to the last programmed posi‐
tion (inc)
Target position Z (abs) or target position X referred to the last programmed position
(inc)
Note:
Incremental dimension: The sign is also evaluated.
Radius of circular arc
The sign determines the type of arc traversed.
Machining feedrate.
1. The ShopTurn program to be processed has been created and you are
in the editor.
2. Press the menu forward key and the "Straight Circle" softkey.
3. Press the "Polar" and "Pole" softkeys.
Programming technology functions (cycles)
10.7 Additional cycles and functions in ShopTurn
Unit
mm
mm
mm
mm
mm/rev
mm/min
mm/tooth
581