Programming Example - Siemens SINUMERIK 840D sl Programming Manual

Measuring Cycles for Turning Machines
6.5 CYCLE974 workpiece: 1-point measurement
See also
Defining parameters (Page 63)
Result parameters (Page 65)
Variable measuring velocity: _VMS (Page 76)
Tolerance parameters: _TZL, _TMV, _TUL, _TLL, _TDIF and _TSA (Page 77)
Measurement path: _FA (Page 78)
Probe type, probe number: _PRNUM (Page 79)
Empirical value, mean value: _EVNUM (Page 80)
Multiple measurement at the same location: _NMSP (Page 81)
Weighting factor for mean value calculation: _K (Page 81)
6.5.4.2

Programming example

1-point measurement at outside diameter, measuring with reversal
An outside diameter with tool T7, D1 has been machined on a workpiece. The set diameter
has the dimension shown in the figure.
This outside diameter is to be measured with reversal. The spindle is SPOS-capable.
If the absolute value of the difference determined is >0.002, the length (in measuring axis
_MA) of the tool is to be automatically offset in the wear.
The maximum permissible deviation is taken as max. 1 mm. Max. 0.4 mm is permissible.
To obtain a minimum measuring path of 1 mm, the measuring path is programmed as
_FA=1+1=2 mm (max. total measuring path = 4 mm).
The offset is not to consider an empirical value and no mean value is calculated or used.
Clamping for workpiece:
Zero offset, with settable ZO G54: NVz
Workpiece probe 1, used as tool T9, D1, is to be used.
The probe is already calibrated. Arrays for workpiece probe 1: _WP[0, ...]
The following is entered under T9, D1 in the tool offset memory:
344
Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Measuring cycles