Siemens SINUMERIK 840D sl Operating Manual page 100

Setting up the machine
2.6 Measuring the workpiece zero
4 holes
Rectangular
pocket
1 hole
100
• If you do not make any entry in the entry field "Øhole", then the axis
moves with the measuring feed from the starting point. If the
measuring stroke does not reach the edge of the hole, then the
approximate diameter must be entered. However, the measuring
sequence is then also shortened as part of the measuring distance is
moved with rapid traverse.
• In "Angle offs." select entry "No".
- OR -
• In "Angle offs." select entry "Yes" if you want alignment to be
performed with coordinate rotation.
• Enter the setpoint angle.
The angle entered here refers to the 1st axis of the working plane
(X/Y plane). This input field only appears if you specified "Yes" for
"Angle offs."
• Specify setpoint positions X0 and Y0.
These determine the point of intersection of the lines connecting the
hole center points.
7. Press the <CYCLE START> key.
The tool automatically probes four points of the inner sides of the
pocket or hole in succession.
After the measurement has been successfully completed, the "P1
stored" softkey becomes active.
8. Then move the tool approximately to the center of the second, third,
and fourth hole and press the <CYCLE START> key.
After measuring points P2, P3, and P4 have been successfully
measured, the "P2 stored", "P3 stored", and "P4 stored" softkeys
become active.
9. Press the "Calculate" or "Set ZO" softkey.
The length, width, and center point of the rectangular pocket are
calculated and displayed.
For "Set ZO", the setpoint position of the center point is stored as new
zero point.
The diameter and center point of the hole are calculated and displayed.
The tool automatically probes four points of the inside wall of the hole
one after the other and the setpoint position of the center point is stored
as the new zero point.
Operating Manual, 03/2013, 6FC5398-7CP40-3BA1
Milling