Siemens SINUMERIK 840D Operating Manual page 334

Programming technological functions (cycles)
8.3 Contour milling
Contour element "Straight line, e.g. X"
Parameter
X
α1
α2
Transition to next
element
Radius
Chamfer
Additional commands
334
The "Circle" input window opens.
- 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 "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 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, 03/2010, 6FC5398-7CP20-1BA0
Unit
mm
Degrees
Degrees
mm
mm
Milling