HEIDENHAIN SW 68894x-02 - Manual (Page 47)

HEIDENHAIN CNC PILOT 640 47
1.
8
Tool
dimensions
1.8 Tool dimensions
The CNC PILOT requires information on the specific tools for a variety
of tasks, such as calculating the cutting radius compensation or the
proportioning of cuts.
Tool length
All programmed and displayed position values are given with respect
to the distance between the tool tip and workpiece zero point. Since
the control only knows the absolute position of the tool carrier (slide),
The CNC PILOT needs the dimensions XL and ZL (see figure) to
calculate and display the position of the tool tip.
Tool compensation
The tool tip is subjected to wear during machining processes. To
compensate for this wear, the CNC PILOT uses compensation values.
The compensation values are managed independent of the values for
length. The system automatically adds the compensation values to the
values for length.