Siemens SINUMERIK 840D sl Programming Manual page 40

Description
1.10 Parameters for checking the measurement result and offset
2/3 tolerance of workpiece TMV (
TMV is active only for workpiece measurement with automatic tool offset.
Within the range of "Lower limit" and "2/3 workpiece tolerance" the mean value is calculated
according to the formula described in Section "Measuring strategy".
Note
Mv
new
 If Mv
 If Mv
Weighting factor for mean value generation FW (
FW is active only for workpiece measurement with automatic tool offset. The weighting factor
can be used to give a different weighting for each measurement.
A new measurement result thus has only a limited effect on the new tool offset as a function
of FW.
Work offset range TZL (
TZL active for
● Workpiece measurement with automatic tool offset
● Tool measurement and calibration for milling tools and tool probes
This tolerance range corresponds to the amount of maximum accidental dimensional
deviations. It has to be determined for each machine.
No tool compensation is made within these limits.
In workpiece measurement with automatic tool offset, however, the mean value of this
measuring point is updated and re-stored with the measured actual/set difference, possibly
compensated by an empirical value.
The tolerance bands (range of permissible dimensional tolerance) and the responses
derived from them are as follows:
40
)
S_TMV
is compared with the work offset range:
is greater than this range, compensation is corrected by Mv
new
mean value memory is cleared.
is less than this range, no compensation is carried out. This prevents excessively
new
abrupt compensations.
)
S_TZL
)
S_K
Programming Manual, 02/2011, 6FC5398-4BP40-0BA0
and the associated
new
Measuring cycles