Programming Example - Siemens SINUMERIK 840D sl Programming Manual

Measuring Cycles for Turning Machines
6.6 CYCLE994 workpiece: 2-point measurement
6.6.1.2

Programming example

Two-point measurement, outside and inside
An outside diameter with tool T8, D1 and an inside diameter with tool T9, D1 has been
machines on a workpiece. The set diameters have the dimensions shown in the figure.
If the absolute value of the difference determined is >0.002 mm, 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. 0.5 mm. Max. 0.04 mm is permissible. To obtain a minimum
measuring path of 0.5 mm, the measuring path is programmed as _FA= 0.5+0.5=1 mm
(max. total measuring path = 2 mm).
The offset must take the empirical value in memory _EV[2] into consideration for T 8, or
_EV[3] for T 9. Mean value calculation _MV[2] or _MV[3] and inclusion in calculation are also
to be used. This tool offsets will therefore affect the production of the next workpieces or
possible remachining.
Clamping for workpiece:
Zero offset, with settable ZO G54: NVz
Workpiece probe 1, used as tool T1, D1, is to be used.
The probe is already calibrated. Arrays for workpiece probe 1: _WP[0, ...]
The following is entered under T1, D1 in the tool offset memory:
Tool type (DP1):
Cutting edge position (DP2):
Length 1 - geometry (DP3):
Length 2 - geometry (DP4):
Radius - geometry (DP6):
352
580
7
L1 = 40.123
L2 =
100.456
3.000
Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Measuring cycles