Siemens SINUMERIK 840D Operation/Programming Manual page 63

2
10.04
Measurement only
Work offset
Aligning
Zero point
Rotary axes
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SINUMERIK 840D/840Di/810D Operation/Programming ShopMill (BAS) – 10.04 Edition
2.6 Measuring workpiece zero
If you "only" want to measure the workpiece zero, the measured
values are merely displayed without changing the coordinate system.
You usually store the measured workpiece zero in a work offset. With
ShopMill you can measure rotations and offsets. If necessary, you
may first have to measure the rotations of your workpiece to align
your workpiece and then define the zero point by measuring the
offsets.
Alignment can be performed either by rotating the coordinate system
or by rotating the workpiece with a rotary axis. If your machine is
equipped with two rotary axes and the "swivel" function is set up, you
can also align an inclined plane.
The measurement values for the offsets are stored in the coarse
offset and the relevant fine offsets are deleted. If the zero point is
stored in a non-active work offset, an activation window is displayed
with which you can activate this work offset directly.
If your machine has rotary axes, you can include these rotary axes in
the measurement and setup procedure. If you store the workpiece
zero in a work offset, rotary axis positioning may be necessary in the
following cases.
•
Correcting the work offset requires you to position the rotary axes
to align the workpiece parallel with the coordinate system, e.g.
with "Align edge".
•
Correcting the work offset rotates the workpiece coordinate
system, which should align the tool perpendicular to the plane,
e.g. for "Align plane".
You are supported by one or two activation windows when you
position the rotary axes (see Sec."Corrections after measuring the
zero point").
You can only select "Rotary axis A, B, C" for the "Angle corr."
parameter, if your machine has rotary axes. They must also be
assigned to geometry axes in the machine data.
Please refer to the machine manufacturer's instructions.
2
Operation
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