Operational Sequence - Siemens SINUMERIK 840D sl Programming Manual

Measuring Cycles for Milling and Machining Centers
5.2 CYCLE971 tool: Measuring milling tools, drills
5.2.3.4

Operational sequence

Position before measuring cycle call
The calibration tool must be prepositioned as shown in the figure and for the selected
variant. The tool must have reached a permissible starting position.
With incremental calibration, there is no generation of traversing movements before the
actual measured block. The calibration tool must be positioned in front of the tool probe such
that the calibration tool traverses to the tool probe when the measuring axis and a signed
incremental measuring path up to the expected edge are entered in FA.
In normal calibration the measuring cycle calculates the approach path to the probe
independently from the starting position and then generates the appropriate traverse blocks.
Note on calibrating in the 3rd measuring axis (_MA=3, _MA=103, _MA=203):
If the tool diameter (2x $TC_DP6) is smaller than the upper diameter of the probe (_TP[i,6]),
the calibration tool is always positioned in the center of the probe.
If the tool diameter is larger, the calibration tool is offset by the tool radius toward the center
onto the probe. The value of _ID is subtracted.
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Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Measuring cycles