Measuring The Tool - Siemens SINUMERIK 840D Operation/Programming Manual

3
10.04

3.9.2 Measuring the tool

 Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Operation/Programming ShopMill (BAS) – 10.04 Edition
Use the "Measure tool" function if you want to check the tool wear
while machining the workpiece.
You can only measure the tools within a program using an electronic
measuring probe, which you must calibrate the probe first.
You can consider a lateral or longitudinal offset V when measuring. If
the maximum length of the tool is not at the outer edge of the tool or
the maximum width is not at bottom edge of the tool, you can store
this difference in the offset.
Longitudinal offset
ShopMill then calculates the tool wear data from the known positions
of the toolholder reference point and of the probe and from the tool
offset data. The wear values are automatically entered in the wear list
and added to any existing values stored there.
If the wear exceeds the maximum permissible value for tool wear ∆L
or ∆R, the tool is replaced and disabled against further use. If no
replacement tool is available, the machining operation is interrupted.
During the measuring cycle the tool automatically approaches the
probe at measurement feedrate. The tool then moves to the retraction
plane before returning to the tool change point.
ShopMill automatically executes the measurement with either a
rotating or stationary spindle depending on the tool type and selected
measurement method (measure radius/length).
Th radius is always measured in the opposite direction to spindle
rotation.
Programming with ShopMill
3.9 Measurement
Lateral offset
3
3-293