Siemens SINUMERIK Series Operating Manual page 127

Measuring three holes
The workpiece with the three holes to be measured is clamped to the work table in any position.
Four points are automatically measured in the three holes and the hole centers are calculated
from them. A circle is placed through the three center points. The center point and the diameter
are determined from this circle. This center point represents the new workpiece zero to be
determined. When an angular offset is selected, the base angle of rotation α can also be
determined.
Measuring four holes
The workpiece with the four holes to be measured is clamped to the work table in any position.
Four points are automatically measured in the four holes and the hole centers are calculated
from them. Two hole center points are diagonally connected in each case. The point of
intersection is determined from the two lines that are obtained. This point of intersection
represents the new workpiece zero to be determined. When an angular offset is selected, the
base angle of rotation α can also be determined.
Note
"Measuring only" for automatic measuring
If "Measuring only" is selected as offset target, then instead of the "Set WO" softkey, the
"Calculate" softkey is displayed.
The measuring versions "Rectangular pocket" and "1 hole" are an exception. For these single-
point measurements, for "Measuring only" neither the "Set WO" softkey nor the "Calculate"
softkey is listed.
Note
You can only measure 2, 3, and 4 holes automatically.
Precondition
You can insert any tool in the spindle for scratching when measuring the workpiece zero
manually.
- OR -
An electronic workpiece probe is inserted in the spindle and activated when measuring the
workpiece zero automatically.
Milling
Operating Manual, 08/2018, 6FC5398-7CP41-0BA0
Setting up the machine
4.6 Measuring the workpiece zero
127