Siemens SINUMERIK 840DE SL - Measuring the Workpiece Zero-Point

2
Setting Up the Machine 08/2005
2.6 Measurin
g
the work
p
iece zero-
p
oint
2
♥ Siemens AG, 2005. All rights reserved
2-70 SINUMERIK 840D sl Operation/Programming ShopTurn (BAT) – 08/2005 Edition
2.6 Measuring the workpiece zero-point
The reference point for programming a workpiece is always the
workpiece zero. To determine this zero-point, measure the length of
the workpiece and save the position of the cylinder in the direction Z in
a zero-point offset. This means that the position is stored in the coarse
offset and existing values in the fine offset are deleted.
The prerequisite for measuring the workpiece is that a tool with known
lengths is in the machining position (see Sec. "Select Tool and
Spindle").
Jog
 Select the "Meas. workp." softkey in "Machine Manual" mode.
 Select the desired offset in which the position of the cylinder front
surface is to be saved.
-or-
Work
offset
 Press the "Work offset” softkey.
-and-
 Position the cursor on the desired zero-point offset.
-and-
Back to
manual
 Press the "Back to manual" softkey.
 Traverse the tool in the direction Z and scratch it (see Sec.
"Traversing the Axes").
 Enter the desired position of the workpiece edge Z0.
Set work
offset
 Press the "Set work offset” softkey.
The workpiece zero-point and the accompanying zero-point offset are
calculated. The tool length is automatically included in the calculation.
Example: Workpiece edge desired position Z0 = 0
Tool length offset Z = 37.6 mm
⇒ Z = -37.6