Siemens SINUMERIK 840D, Operating Manual

Page: 341 / 610

Programming technological functions (cycles)
8.3 Contour milling
Milling
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
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Parameter Description Unit
Radius
compensation

Left (machining to the left of the contour)

Right (machining to the right of the contour)
 off
A programmed contour can also be machined on the center-point path. 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.
Z0 Reference point Z (abs or inc)
Z1 Final depth (abs) or final depth referred to Z0 (inc) - (only for ∇ and ∇∇∇) mm
DZ Maximum depth infeed - (only for ∇ and ∇∇∇) mm
UZ Depth finishing allowance - (only for ∇) mm
FS Chamfer width for chamfering (inc) - (for chamfering only) mm
ZFS Insertion depth of tool tip (abs or inc) - (for chamfering only) mm
UXY Plane finishing allowance - (only for ∇ and G code) mm
Approach Planar approach mode:

Straight line:
Slope in space

Quadrant:
Part of a spiral (only with path milling left and right of the contour)

Semi-circle:
Part of a spiral (only with path milling left and right of the contour)

Perpendicular:
Perpendicular to the path (only with path milling on the center-point path)
Approach strategy 
Axis by axis

Spatial (only for "quadrant, semi-circle or straight line" approach)
R1 Approach radius - (only for "quadrant or semi-circle" approach) mm
L1 Approach distance - (only for "straight line" approach) mm
Retraction Planar retraction mode:

Straight line

Quadrant:
Part of a spiral (only with path milling left and right of the contour)

Semi-circle:
Part of a spiral (only with path milling left and right of the contour)