Siemens sinumerik 840D sl Operating Manual page 386

Programming technology functions (cycles)
8.5 Contour milling
Contour element "Straight line, e.g. X"
Parameters
Machining
surface
(only for ShopTurn)
X
α1
α2
Transition to next
element
Radius
Chamfer
Additional commands
386
- OR
The "Pole Input" 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 angle to the preceding
element α2 is set to 0°. The "tangential" selection appears in the
parameter input field.
7. Repeat the procedure until the contour is complete.
8. Press the "Accept" softkey.
The programmed contour is transferred to the machining 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
Face C

Face Y

Face B

Peripheral surface C

Peripheral surface Y

End point X (abs or inc)
Starting angle e.g. to the X axis
Angle to the preceding element
Type of transition
Radius

Chamfer

R Transition to following element - radius
FS Transition to following element - chamfer
Additional G code commands
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
Unit
mm
Degrees
Degrees
mm
mm
Turning