Programming A Circle With Known Center Point - Siemens sinumerik 840D sl Operating Manual

Programming technology functions (cycles)
8.7 Further cycles and functions ShopTurn
8.7.12

Programming a circle with known center point

To program a circle or arc with a known center point, use the "Circle center point" function.
The tool traverses a circular path from its actual position to the programmed target position
at the machining feedrate. The system calculates the radius of the circle/arc on the basis of
the entered interpolation parameter settings I and K.
Procedure
Parameters
Direction of rotation
Y
Z
J
K
Y
Z
J
K
444
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 "Circle center point" softkey.
Description
Direction of rotation in which the tool travels from the circle starting point to the
circle end point:
Direction of rotation clockwise (right)
Direction of rotation counterclockwise (left)
Machining plane, peripheral surface C
Target position Y (abs) or target position X referred to the last programmed
position (inc)
Target position Z (abs) or target position Y referred to the last programmed
position (inc)
Circle center point J (ink).
Circle center point K (inc).
Note:
Incremental dimension: The sign is also evaluated.
Machining plane, peripheral surface Y
Target position Y (abs) or target position X referred to the last programmed
position (inc)
Target position Z (abs) or target position Y referred to the last programmed
position (inc)
Circle center point J (ink).
Circle center point K (inc)
Note:
Incremental dimension: The sign is also evaluated.
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
Unit
mm
mm
mm
mm
mm
mm
mm
mm
Turning