Sequence Of Operations - Siemens SINUMERIK 840D sl Operating Manual

2.6.2

Sequence of operations

To measure the workpiece zero, the workpiece probe must always be located or set
perpendicular to the measuring plane (machining plane) (e.g. using "Align plane").
For the measuring versions "Set edge", "Distance 2 edges", "Rectangular pocket" and
"Rectangular spigot", the workpiece must first be aligned parallel to the coordinate system.
To do this, it may be necessary to perform the measuring process in several steps.
Possible step sequences
1. "Align plane" (to align the workpiece probe perpendicular to the plane)
2. "Align edge" (to align the workpiece parallel to the coordinate system)
3. "Set edge" or "Distance 2 edges" of "Rectangular pocket" or
"Rectangular spigot", to define the workpiece zero.
- OR -
1. "Align plane" (to align the workpiece probe perpendicular to the plane)
2. "Corner" or "2 holes" or "2 spigots", to align the the coordinate system parallel to the
workpiece and to determine the workpiece zero)
Pre-positioning
If you want to preposition a rotary axis before measuring with "Align edge", move the rotary
axis so that your workpiece is approximately parallel to the coordinate system.
Set the relevant rotary axis angle to zero with "Set WO". Measurement with "Align edge" will
then correct the value for rotary axis offset or include it in the coordinate rotation and align
the workpiece edge precisely.
If you want to preposition your workpiece with "Align plane" prior to measurement, you can
set the required angular values under "Manual swivel". With "Set zero plane"you transfer the
resulting rotations into the active work offset.
The measurement with "Align plane" will then correct the value for the coordinate rotations
and precisely align the workpiece.
If the function "Swivel Manual" is set up on your machine, we recommend that you perform
swivel to zero before starting measurement. In that way, you will ensure that the rotary axis
positions match the actual coordinate system.
Milling
Operating Manual, 03/2013, 6FC5398-7CP40-3BA1
Setting up the machine
2.6 Measuring the workpiece zero
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