Operation Manual

HEIDENHAIN CNC PILOT 640 49

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.