Siemens SINUMERIK 840D sl Operating Manual page 478

Programming technological functions (cycles)
10.4 Turning - milling/turning machine
Parameter
αC
(for ShopMill program)
Hirth joint
Tool
Preferred direction (for
ShopMill program)
Machining
Position
Machining
direction
Form
P
478
Description
Rotational position for a pole position
● Round to the next Hirth joint
● Round up to Hirth joint
● Round down to Hirth joint
Note:
For machines with a Hirth joint
Tool tip when swiveling
● Tracking
The position of the tool tip is maintained during swiveling.
● No tracking
The position of the tool tip is not maintained during swiveling.
Preferred direction of the swivel axis for several possible alignments of the machine
● ∇ (roughing)
● ∇∇∇ (finishing)
● ∇ + ∇∇∇ (roughing and finishing)
Machining position:
● Longitudinal
● Parallel to the contour
● Normal (form A)
● Short (form B)
Thread pitch (select from the preset DIN table or enter)
Unit
Degrees
mm/rev
Operating Manual, 05/2017, A5E40868956
Milling