Measuring A Spigot - Siemens SINUMERIK 840D sl Operating Manual

Setting up the machine
4.6 Measuring the workpiece zero
4.6.9

Measuring a spigot

You have the option to measure and align rectangular spigots, and one or more circular
spigots.
Measuring a rectangular spigot
The rectangular spigot should be aligned at right-angles to the coordinate system. By
measuring four points at the spigot you can determine the length, width, and center point of
the spigot.
Please note that the straight lines between points P1 and P2 or P3 and P4 must intersect with
one another, in order that a measurement result is displayed.
Measuring one circular spigot
The workpiece is located anywhere on the work table and has a circular spigot. You can
determine the diameter and center point of the spigot with four measuring points.
Measuring two circular spigots
The workpiece is located anywhere on the work table and has 2 spigots. Four points are
automatically measured at the two spigots and the spigot centers are calculated from them.
The 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 first spigot is determined.
Measuring three circular spigots
The workpiece is located anywhere on the work table and has three spigots. Four points are
automatically measured at the three spigots and the spigot centers are calculated from them.
A circle is placed through the three center points and the circle center and circle diameter are
determined.
When an angular offset is selected, the base angle of rotation α can also be determined.
Measuring four circular spigots
The workpiece is located anywhere on the work table and has four spigots. four points are
automatically measured at the four spigots and the spigot centers are calculated from them.
Two spigot center points are each connected diagonally and the intersection point of the two
lines is then 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 spigot" and "1 circular spigot" 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 circular spigots automatically.
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Operating Manual, 05/2017, A5E40868956
Milling