Workpiece Presetting With Axis Keys - HEIDENHAIN iTNC 530 User Manual

Workpiece presetting with axis keys

Protective measure
If the workpiece surface must not be scratched, you can
lay a metal shim of known thickness d on it. Then enter a
tool axis datum value that is larger than the desired datum
by the value d.
Select the Manual Operation mode
Move the tool slowly until it touches (scratches) the
workpiece surface
Select an axis (all axes can also be selected via the
ASCII keyboard)
DATUM SETTING Z=
Zero tool in spindle axis: Set the display to a known
workpiece position (here, 0) or enter the thickness d
of the shim. In the tool axis, offset the tool radius
Repeat the process for the remaining axes.
If you are using a preset tool, set the display of the tool axis to the
length L of the tool or enter the sum Z=L+d
484 Manual Operation and Setup