Main Axes/Geometry Axes - Siemens SINUMERIK 828D Programming Manual

15.1.1

Main axes/Geometry axes

The main axes define a right-angled, right-handed coordinate system. Tool movements are
programmed in this coordinate system.
In NC technology, the main axes are called geometry axes. This term is also used in this
Programming Guide.
Replaceable geometry axes
The "Replaceable geometry axes" function (see Function Manual, Job Planning) can be
used to alter the geometry axes grouping configured using machine data from the part
program. Here any geometry axis can be replaced by a channel axis defined as a
synchronous special axis.
Axis identifier
For turning machines:
Geometry axes X and Z are used, and sometimes Y.
For milling machines:
Geometry axes X, Y and Z are used.
Further information
A maximum of three geometry axes are used for programming frames and the workpiece
geometry (contour).
The identifiers for geometry and channel axes may be the same, provided a reference is
possible.
Geometry axis and channel axis names can be the same in any channel so that the same
programs can be executed.
Fundamentals
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
Other information
15.1 Axes
437