Siemens SINUMERIK 840D sl Operating Manual page 390

Programming technology functions (cycles)
10.3 Contour turning
Contour element "Straight line e.g. Z"
Parameters
Z
α1
α2
Transition to next ele‐
ment
Radius
390
The "Straight line (e.g. Z)" input window opens.
- OR
The "Straight line (e.g. X)" input window opens.
- OR
The "Straight line (e.g. ZX)" input window opens.
- OR
The "Circle" input window opens.
4. Enter all the data available from the workpiece drawing in the input screen
(e.g. length of straight line, target position, transition to next element,
angle of lead, etc.).
5. Press the "Accept" softkey.
The contour element is added to the contour.
6. When entering data for a contour element, you can program the transition
to the preceding element as a tangent.
Press the "Tangent to prec. elem." softkey. The "tangential" selection
appears in the parameter α2 entry field.
7. Repeat the procedure until the contour is complete.
8. Press the "Accept" softkey.
The programmed contour is transferred into the process plan (program
view).
9. If you want to display further parameters for certain contour elements,
e.g. to enter additional commands, press the "All parameters" softkey.
Description
End point Z (abs or inc)
Starting angle to Z axis
Angle to the preceding element
Type of transition
● Radius
● Undercut
● Chamfer
R Transition to following element - radius
Unit
mm
Degrees
Degrees
mm
Operating Manual, 05/2017, A5E40868721
Turning