Zeiss CenterMax, Operating Instructions Manual

Page: 117 / 166

Preparations for a measuring run
7-17
CenterMax Operating Instructions 61211-1020202
What you should know!
Why is calibration necessary?
The computer automatically recognizes the probe system, and there-
fore knows the axial center point of the adapter plate receptacle. But
it does not know the length of the individual probes. The calculation
of the geometric data of a workpiece is not possible without this data.
Calibration is required to determine the length of the probes.
The reference measurement has to be carried out before determining
the length of the probes
➤
“Carrying out a reference measurement”
on page 7-19 .
In which cases is calibration necessary?
Calibration is necessary in the following cases:
– after a reference point travel
– after a collision
– when inserting a new stylus into the probe.
Normally, it is sufficient to calibrate the new stylus. However, you
should also recalibrate all other styli of the probe. This is advisable,
since the position of the other styli may have been slightly changed
when the new stylus has attached.
What should be observed during calibration?
Observe the following during calibration:
– Carry out a reference measurement.
– Select the stylus to be calibrated.
– Same axis clamping as for the measuring run.
VAST probe system
– With VAST probe system same measuring force for calibration and
measuring run.
Calibration can be carried out manually or semi-automatically. How-
ever, preference should be given to semi-automatic calibration.
Preparation
What is required for calibration?
The following is required for calibration:
– Calibration standard
A calibration standard with a highly accurate ceramic sphere is
usually used
➤
“Calibration standard” on page 2-12 .
NOTE