Measuring A Pocket And Hole - Siemens SINUMERIK 828D Operating Manual

Automatic measurement
2.6.7

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
measuring four points inside the pocket you can determine the length, width, and center
point of the pocket.
Measuring 1 hole
The workpiece lies anywhere on the work table and has a hole. You can determine the
diameter and center point of the hole with four measuring points.
Measuring 2 holes
The workpiece lies anywhere on the work table and has two holes. 4 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.
HMI sl Milling
Operating Manual, 06/2009, 6FC5398-7CP20-0BA0
1. Prepare the measurement (see steps 1 to 6 above).
2. Approach measuring point P1 with the workpiece probe and press the
<CYCLE START> key.
This starts the automatic measuring process. The position of
measuring point 1 is measured and stored.
The "P1 stored" softkey becomes active.
3. Repeat the operation to measure and store points P2 and P3.
If you are measuring a corner not equal to 90°, repeat the procedure
to measure and store point P4.
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
2.6 Measuring the workpiece zero
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