Calibrating A Workpiece Probe In A Hole Of Known Hole Center Point; General Information - Siemens SINUMERIK 840D sl Programming Manual

5.3.2

Calibrating a workpiece probe in a hole of known hole center point

5.3.2.1

General information

Function
Using the measuring cycle and the _MVAR=xxxx01
measuring variant, it is possible to calibrate the probe in the axes of the plane (G17, G18, or
G19) in a calibration ring. A hole that is perpendicular to the selected plane and with the
same quality requirements regarding geometrical accuracy and surface roughness can also
be used.
The center point (CP) of the hole and its diameter (D) must be known for this calibration
variant!
The calculated trigger points are automatically loaded in the relevant data area _WP[ ] of
block GUD6.DEF if the calculated difference from the stored trigger points lies within the
tolerance band between _TZL and _TSA. If _TSA is exceeded an error message is output.
Calibration is performed either paraxially with the axes of the active workpiece coordinate
system or at an angle to these axes.
The number of axes and axis directions can be selected in _MVAR. If fewer than four axis
directions are selected (_MVAR= xx1xx01, xx2xx01), additional information must be supplied
in _MA and possibly in _MD.
Prerequisite
The probe must be called with tool length offset.
Tool type, preferably: 710.
NOTICE
The first time calibration is performed the default setting in the array of probe _WP[ ] is still
"0". For that reason _TSA> probe ball radius must be programmed to avoid alarm "Safe
area violated".
Measuring cycles
Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Measuring Cycles for Milling and Machining Centers
5.3 CYCLE976 calibrate workpiece probe
123