Siemens SINUMERIK 828D Operating Manual page 548

Programming technology functions (cycles)
9.5 Contour milling
Approach/retraction
1. The tool approaches the starting point at rapid traverse at the height of the retraction
plane and is fed in to the safety clearance. The cycle calculates the starting point.
2. The tool first infeeds to the machining depth and then approaches the spigot contour from
the side in a quadrant at machining feedrate.
3. The spigot is machined in parallel with the contours from the outside in. The direction is
determined by the machining direction (climb/conventional) (see "Changing program
settings").
4. When the first plane of the spigot has been machined, the tool retracts from the contour in
a quadrant and then infeeds to the next machining depth.
5. The spigot is again approached in a quadrant and machine in parallel with the contours
from outside in.
6. Steps 4 and 5 are repeated until the programmed spigot depth is reached.
7. The tool retracts to the safety clearance at rapid traverse.
Procedure
Parameters in the "Input complete" mode
Parameters, G code program
Input
PRG Name of the program to be generated
PL Machining plane
Milling direction
Climbing
•
Conventional
•
milling
RP Retraction plane
SC Safety clearance
F Feedrate
548
1. The part program or ShopTurn program to be processed has been cre-
ated and you are in the editor.
2. Press the "Milling", "Contour milling" and "Spigot" softkeys.
The "Mill spigot" input window opens.
3. Select the "Roughing" machining type.
Complete
•
mm
mm
mm/min
Parameters, ShopTurn program
T Tool name
D Cutting edge number
F Feedrate
S / V Spindle speed or constant cut-
ting rate
Operating Manual, 01/2015, 6FC5398-8CP40-5BA2
mm/min
mm/tooth
rpm
m/min
Turning