POSITIP 855 - heidenhain - DR. JOHANNES HEIDENHAIN GmbH

I - 2 Working with POSITIP – First Steps
Datum setting: Approaching positions and entering actual values
The easiest way to set datum points is to use the POSITIP's probing
functions – regardless of whether you probe the workpiece with
the HEIDENHAIN KT Edge Finder or with a tool. A description of the
probing functions starts on page 22.
Of course, you can also set datum points in the conventional manner
by touching the edges of the workpiece one after the other with
the tool and entering the tool positions as datum points (see examples
on this page and the next).
The datum table can hold up to 99 datum points. In most cases this
will free you from having to calculate the axis travel when working
with complicated workpiece drawings containing several datums.
For each datum point, the datum table contains the positions that
the POSITIP assigned to the reference points on the scales (REF
values) during datum setting. Note that if you change the REF values
in the table, this will move the datum point.
Example: Setting a workpiece datum without the probing function
Working plane: X / Y
Tool axis: Z
Tool radius:
Axis sequence in
R = 5 mm
this example: X - Y - Z
Preparation: Select the datum
Select the datum with the vertical arrow keys.
POSITIP displays the number of the current datum at the lower right
of the screen.
Preparation: Call the tool data
Call the tool data for the tool which you are using to touch the workpiece
(see previous page).
20 Operating Instructions POSITIP 855
Y
Z
1
2
X