Measuring A Pocket And Hole - Siemens SINUMERIK 840D sl Operating Manual

4.6.8

Measuring a pocket and hole

You can measure rectangular pockets and one or more holes and then align the workpiece.
Measuring a rectangular pocket
The rectangular pocket must be aligned at right-angles to the coordinate system. By
automatically measuring four points inside the pocket, its length, width and center point can
be determined.
Measuring one hole
The workpiece with the hole to be measured is clamped to the work table in any position. In
the hole, four points are automatically measured, and from this measurement, the diameter
and center point of the hole are determined.
Measuring two holes
The workpiece with the two holes to be measured is clamped to the work table in any position.
Four points are automatically measured in both holes and the hole centers are calculated from
them. Angle α is calculated from the connecting line between both center points and the
reference axis, and the new zero point that corresponds to the center point of the 1st hole is
determined.
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
Milling
Operating Manual, 05/2017, A5E40868956
4. Press the "Calculate" softkey.
The corner point and angle α are calculated and displayed.
- OR -
Press the "Set WO" softkey.
The corner point now corresponds to the setpoint position. The calculated
offset is stored in the offset target that you have selected.
Setting up the machine
4.6 Measuring the workpiece zero
105