Operational Sequence - Siemens SINUMERIK 840D sl Programming Manual

6.3.4.2

Operational sequence

Position before measuring cycle call
Before the cycle is called, the tool must be moved to the starting position, as shown in the
diagram for turning tools. The measuring cycle then calculates the approach position
automatically. First the length (P1) in the abscissa (Z axis for G18) and then (P2) in the
ordinate (X axis for G18) is measured. For turning tools, the measuring probe travels round
the measuring cube at distance _FA.
For milling tools, the measuring points on the tool are determined by entered lengths 1 and 2
(please note: SD 42950). If the radius value is not equal to zero, this is also a determining
factor. The axial or radial position of the tool must be specified in _MVAR, and the starting
position approached accordingly. First, the values in the abscissa (Z axis for G18) are
measured. Measurement with reversal can be selected separately with _MVAR. The probe
travels round the measuring cube at distance _FA or according to the starting point
coordinate (see figs.).
Position after end of measuring cycle
When the cycle is complete, the tool nose is again located at the starting point. A movement
to this point is automatically generated in the cycle.
Measuring cycles
Programming Manual, Release 04/2006, 6FC5398-4BP10-0BA0
Measuring Cycles for Turning Machines
6.3 CYCLE982 tool: Measure turning and milling tools
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