Siemens SINUMERIK 840D sl Programming Manual

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3.3.26 3D measuring on machines with orientation transformationFunctionMeasuring with active orientation transformation, i.e. with the swivel cycleCYCLE800(orientable tool carrier TCARR), or with the kinematic 5-axis transformation (TRAORI) with themeasuring cycles is possible.The probe must be positioned perpendicular to the machining plane or parallel to the tool axisbefore calling the measuring cycles.The Align plane (CYCLE998) and Measure kinematics (CYCLE996) functions are theexception. Here, the probe is always at an angle to the object to be measured.The workpiece measurement is generally based on the active workpiece coordinate systemWCS.Checking the correct switching direction when measuring the workpieceIf elements (hole, edge, etc.) are measured in the swiveled, rotated WCS, the switchingdirection of the 3D workpiece probe must be checked as follows during the first commissioningof the machine in the JOG and AUTO modes:● Bit1 = 1 must be set in SD 55740 $SCS_MEA_FUNCTION_MASK (coupling of the spindlewith the coordinate rotation).● The switching direction in X+ (for G17) in the initial state of the machine kinematics mustbe marked accordingly on the probe.● Using the measuring of a hole withCYCLE977 in the swiveled plane as an example, themarked switching direction must be aligned towards X+ when starting and probing the 1stmeasuring point.With active orientation transformation (TCARR,CYCLE800, TRAORI), the spindle positionchanged by the tool orientation is calculated internally in the measuring cycles and thespindle corrected accordingly.The result of the calculation is saved in the GUD variable _MEA_CORR_ANGLE[1].The correct spindle position during measuring must be checked on the workpiece fordifferent orientations of the object to be measured.● After a successful check, SD 55740 $SCS_MEA_FUNCTION_MASK, bit1 = 0 can be set.The measurement results must correspond to those of the measurements with coupling ofthe spindle.Measuring variants3.3 Measure workpiece (milling)Measuring cycles246 Programming Manual, 12/2017, 6FC5398-4BP40-6BA1