Measurement And Zo Determination; General Information - Siemens SINUMERIK 840D sl Programming Manual

Measuring Cycles for Milling and Machining Centers
5.9 CYCLE997 workpiece: Measuring a sphere and ZO determination
5.9.2

Measurement and ZO determination

5.9.2.1

General information

Measurement and calculation strategy
At the beginning of the cycle the probe must be in the infeed axis at safety height. It must be
possible to reach all spheres from here without collision.
The cycle starts with measurement of the 1st sphere. Active G17 to G19 defines the plane
with abscissa, ordinate. The applicate is the infeed axis.
4 or 3 measuring points are approached at the height of the center point setpoint of the
applicate. The actual center point of the circle in the plane is calculated internally from these
measured values (center of sphere in plane). For measurement "at an angle" the auxiliary
cycle CYCLE116 is used for calculation.
The last measuring point is located exactly above the calculated sphere center in the plane
and is approached using the applicate as the measuring axis.
The actual sphere center point in abscissa, ordinate, applicate is calculated from all these
measuring point.
If measuring variant "Measuring 3 spheres" is selected with _MVAR, these spheres are then
measured in the order sphere 2, sphere 3 in the same way.
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Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Measuring cycles