Siemens SINUMERIK 840D Operation/Programming Manual page 149

2
10.04
Tool radius
compensation
Offset values
milling tool (example)
Offset values
drill (example)
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SINUMERIK 840D/840Di/810D Operation/Programming ShopMill (BAS) – 10.04 Edition
The contour and tool path are not identical. The cutter or tool nose
radius center must travel along a path that is equidistant from the
contour.
For this purpose, the programmed tool center point path is
automatically displaced by the control – as a function of radius and
machining direction – in such a way that the tool edge travels exactly
along the programmed contour.
The tool radius must be entered in the tool list. The control fetches the
required radii during program execution and calculates the tool path
from these values.
Equidistant
Infeed
Ge ometry in plan e
Length in Z
Z
Radius in X/Y
Length in Y
Y
Radius in Z/X
Length in X
X
Radius in Y/Z
Infeed
Geometry in plane
Length in Z
Z
Length in Y
Y
Length in X
X
Offset values are used in the simulation display and programming
graphic for the following tools:
• Drill:
Angle and radius/diameter
• Centering tool:
Radius/diameter
2.13 Tools and tool offsets
F
Length
Radius
Angle
Length
F - Toolholder reference point
2
Operation
F - Toolholder
reference point
F
F
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