Siemens SINUMERIK 840D, Operating Manual

Page: 340 / 610

Programming technological functions (cycles)
8.3 Contour milling
Milling
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Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
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
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.
Parameters, G code program Parameters, ShopMill program
PL Machining plane T Tool name
RP Retraction plane mm D Cutting edge number
SC Safety clearance mm F Feedrate mm/min
mm/rev
F Feedrate mm/min S / V Spindle speed or constant
cutting rate
rpm
m/min
Parameter Description Unit
Machining
 ∇ (roughing)
 ∇∇∇ (finishing)

Chamfering
Machining
direction
Machining in the programmed contour direction

Forward:
Machining is performed in the programmed contour direction

Backward:
Machining is performed in the opposite direction to the programmed contour