Tool Radius Compensation - Siemens Sinumerik 840D sl Programming Manual

Tool offsets

6.3 Tool radius compensation

This length is measured and entered in the tool compensation memory of the control together
with definable wear values. From this data, the control calculates the traversing movements
in the infeed direction.
Note
The offset value for the tool length is dependent upon the spatial orientation of the tool.
6.3 Tool radius compensation
The contour and tool path are not identical. The milling tool or cutting edge center must travel
along a path that is equidistant from the contour. To do this, the control requires data about
the tool form (radius) from the tool compensation memory.
Depending on the radius and the machining direction, the programmed tool center point path
is offset during the program processing in such a way that the tool edge travels exactly along
the programmed contour:
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Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
Fundamentals