Siemens SINUMERIK 840D sl Programming Manual page 185

determined once by calibrating the probe. Probe types 712, 713 and 714 are not suitable for
this purpose. A positionable spindle is mandatory.
With the "Align 3D probe" measuring method, the switching direction of the probe is always
aligned to the current measuring direction. This function is recommended when high demands
are placed on the measuring accuracy. Probe types 712, 713 and 714 are not suitable for this
purpose. A positionable spindle is mandatory.
The measurement result (measurement difference) can be used as follows:
● Correction of a WO so that the zero point is in relation to the center point of the spigot
● Offset of a tool
● Measurement without offset
Measuring principle
Two opposite points in each of the two geometry axes of the plane are measured. The spigot
diameter and the center point are calculated from these four measured actual positions, taking
into account the calibration values. From the measuring points of the 1st geometry axis of the
plane, the center of this axis is calculated and the probe positioned at this center.
Starting from this center point, the measuring points in the 2nd geometry axis are measured,
from which the actual spigot diameter is determined. The measurements start in the positive
direction of the 1st geometry axis. The measured difference of the spigot diameter is used as
tool offset and the position of the spigot zero point as basis for a work offset.
With the selection Setpoint center point "YES", the position of the spigot center can be defined
as workpiece zero through setpoint specifications.
Measure: Circular spigot (CYCLE977)
Measuring cycles
Programming Manual, 12/2017, 6FC5398-4BP40-6BA1
3.3 Measure workpiece (milling)
Measure: Circular spigot with protection zone
(CYCLE977)
Measuring variants
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