Siemens SINUMERIK 828D Operating Manual page 288

Programming technological functions (cycles)
8.3 Contour milling
Approach/retraction strategy
You can choose between planar approach/retraction and spatial approach/retraction:
● Planar approach:
● Spatial approach:
● Retraction is performed in reverse order.
Path milling along center-point path.
A programmed contour can also be machined along the center-point path if the radius
correction was switched-out. In this case, approaching and retraction is only possible along a
straight line or vertical. Vertical approach/retraction can be used for closed contours, for
example.
Procedure
Parameters, G code program
PL Machining plane
RP Retraction plane
SC Safety clearance
F Feedrate
288
Approach is first at depth and then in the machining plane.
Approach is at depth and in machining plane simultaneously.
Mixed programming is possible, for example, approach in the machining plane, retract
spatially.
1. The part program or ShopMill program to be processed has been
created and you are in the editor.
2. Press the "Contour milling" and "Path milling" softkeys.
The "Path Milling" input window opens.
mm
mm
mm/min
Parameters, ShopMill program
T Tool name
D Cutting edge number
F Feedrate
S / V Spindle speed or constant
cutting rate
Operating Manual, 06/2009, 6FC5398-7CP20-0BA0
mm/min
mm/rev
rpm
m/min
HMI sl Milling