Axes And Spindles - Siemens SINUMERIK 840DiE sl Manual

11 NCK Commissioning with HMI Advanced

11.5 Axes and spindles

11.5 Axes and spindles
11.5.1 Axis configuration
Definition
Coordinate
axes
Machine axes
Geometry axes
Special axes
Channel axes
Axis assignment
11-310
The term "axis" is often used either as a single term in conjunction with
SINUMERIK 840Di sl or in a compound, e.g. machine axis, channel axis, etc.
To provide an overview of the philosophy used as the basis, here is a brief ex-
planation of this term.
There are basically 3 types of axes:
1. Coordinate axes
2. Machine axes
3. Geometry and special axes
Coordinate axes (abscissa, ordinate, applicate) are the axes of a Cartesian
coordinate system.
Machine axes are the motion units existing on a machine, which can also be
designated as linear or rotary axes, depending on their usable movement.
The geometry axes constitute the rectangular Cartesian basic coordinate
system of a channel.
Generally, (Cartesian arrangement of the machine axes) direct imaging of the
geometry axes to the machine axes is possible. If the arrangement of the ma-
chine axes, however, is not Cartesian at right angles, the imaging is performed
using a kinematic transformation.
Special axes are all axes of a channel that are not geometry or machine axes.
Unlike for geometry axes (Cartesian coordinate system), no geometric context
is defined for additional axes, neither between additional axes or with respect to
geometry axes.
The total of all machine, geometry and special axes assigned to a channel is
designated as channel axes.
The geometry and special axes represent the programming side of the machin-
ing process, i.e. they are used for programming in the part program.
The machine axes constitute the physical part of the machining process, i.e.
they carry out the programmed traversing movements on the machine.
The assignment of drives, machine axes, channel axes and geometry axes
using the corresponding machine data is shown in the following Fig. 11-4:
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
01/2007