HEIDENHAIN ND 522 - Manual (Page 34)

34 I Operating Instructions
I - 3 Milling Specific Oper
ations
It is also possible to have ND 522/523 determine an
offset. This method involves touching the tip of each
tool to a common reference surface. This allows
ND 522/523 to determine the difference between the
length of each tool.
Move the tool until its tip is touching the reference
surface.
Press the TEACH LENGTH soft key. ND 522/523 will
calculate an offset relative to this surface.
Repeat the procedure for each additional tool using
the same reference surface.
Enter the TOOL UNIT (inch/mm).
Cursor down to the TOOL TYPE field.
Press TOOL TYPES soft key. Select from list of tools,
and press Enter
- ALTERNATIVE METHOD -
Only the tools set using the same reference surface may be
changed without having to reset the datum.
If the tool table already contains tools in which the length
has been set, the reference surface should first be
established using one of them. If not,it will not be possible
to switch between the new tools, and the existing tools
without having to re-establish the datum. Before adding the
new tools, select one of the tools from the tool table. Touch
the tool to a reference surface, and set the datum to 0.
- TOOL UNIT -
TOOL TYPE