Siemens SINUMERIK 828D Operating Manual page 74

Setting up the machine
2.6 Measuring the workpiece zero
Measuring 3 holes
The workpiece lies anywhere on the work table and has three holes. 4 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 circle center point and diameter are
determined from it. When an angular offset is selected, the base angle of rotation α can also
be determined.
Measuring 4 holes
The workpiece lies anywhere on the work table and has four holes. 4 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 between
the two lines is determined from this. When an angular offset is selected, the base angle of
rotation α can also be determined.
Note
You can only measure 2, 3, and 4 holes automatically.
Prerequisite
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.
Procedure
74
1. Select the "Machine" operating area and press the <JOG> key.
2. Press the "Workpiece zero" softkey.
3. Press the "Rectangular pocket" softkey.
- OR -
Press the "1 hole" softkey.
- OR -
Operating Manual, 06/2009, 6FC5398-7CP20-0BA0
HMI sl Milling