Siemens SINUMERIK 840D sl Operating Manual page 450

Programming technological functions (cycles)
8.5 Contour turning- only for G code programs
Contour element "Straight line e.g. Z"
Parameters
Z
α1
α2
Transition to next
element
Radius
Undercut
Chamfer
CA
Additional commands
450
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
Form E Undercut size
e.g. E1.0x0.4
Form F Undercut size
e.g. F0.6x0.3
DIN thread P Thread pitch
α Insertion angle
Thread Z1 Length Z1
Z2 Length Z2
R1 Radius R1
R2 Radius R2
T Insertion depth
FS Transition to following element - chamfer
Grinding allowance
Grinding allowance to right of contour
•
Grinding allowance to left of contour
•
Additional G code commands
Operating Manual, 03/2013, 6FC5398-7CP40-3BA1
Unit
mm
Degrees
Degrees
mm
mm/rev
Degrees
mm
mm
mm
mm
mm
mm
mm
Milling