3D Measuring On Machines With Orientation Transformation - Siemens SINUMERIK 840D sl Programming Manual

Measuring variants
3.3 Measure workpiece (milling)
3.3.26

3D measuring on machines with orientation transformation

Function
Measuring with active orientation transformation, i.e. with the swivel cycle
(orientable tool carrier TCARR), or with the kinematic 5-axis transformation (TRAORI) with the
measuring cycles is possible.
The probe must be positioned perpendicular to the machining plane or parallel to the tool axis
before calling the measuring cycles.
The Align plane (
exception. 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 system
WCS.
Checking the correct switching direction when measuring the workpiece
If elements (hole, edge, etc.) are measured in the swiveled, rotated WCS, the switching
direction of the 3D workpiece probe must be checked as follows during the first commissioning
of the machine in the JOG and AUTO modes:
● Bit1 = 1 must be set in SD 55740 $SCS_MEA_FUNCTION_MASK (coupling of the spindle
with the coordinate rotation).
● The switching direction in X+ (for G17) in the initial state of the machine kinematics must
be marked accordingly on the probe.
● Using the measuring of a hole with
marked switching direction must be aligned towards X+ when starting and probing the 1st
measuring point.
With active orientation transformation (TCARR,
changed by the tool orientation is calculated internally in the measuring cycles and the
spindle 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 for
different 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 of
the spindle.
246
CYCLE998 ) and Measure kinematics ( CYCLE996 ) functions are the
CYCLE977 in the swiveled plane as an example, the
CYCLE800 , TRAORI), the spindle position
Programming Manual, 12/2017, 6FC5398-4BP40-6BA1
CYCLE800
Measuring cycles