HMI software for CNC controls

■ Overview
Measuring cycles
Example: Measuring a shaft
Measuring functions can execute either channel-specifically including
all axes programmed in the measuring set as well as
axially from the parts program or from synchronous actions
beyond NC block limits.
Measuring cycles are subroutines for solving specific measuring
tasks. They are easy to use by entering values for predefined
parameters. A general distinction is made between tool measurement
and workpiece measurement. For this purpose, we
provide you with a complete range of measuring cycles
■ Benefits
7 2 probes can be connected simultaneously
7 Measurement in the solid with frame
7 Adaptable measuring modes with/without deletion of residual
distance
7 Display and logging of measuring parameters and results
(with measuring cycles)
7 Results can be read in the machine or workpiece coordinate
system
7 Cyclic measurement with synchronous actions parallel to
workpiece machining
7 Measurement in jog mode for milling machines
With the advantages of the SINUMERIK measurement functions
and measuring cycles, you ensure machining accuracy, shorten
idle times, and eliminate sources of faults, thus making a significant
contribution to further automation of the manufacturing process.
HMI software for CNC controls
Operator control and programming
■ Function
Measuring functions/measuring cycles
Measuring cycles
Example: Two angle measurement for determining the position of a plane
in space
In the case of tool measuring, the loaded tool (typically in the
revolver on turning machines) is moved toward the probe which
is either in a fixed position or swiveled into the working range by
a mechanical device. The automatically derived tool geometry is
entered in the relevant tool offset data record.
In the case of workpiece measuring, a probe is moved towards
the clamped workpiece like a tool. The flexible selection of measuring
cycles means that you can handle practically every measuring
task associated with turning or milling.
The principle of "on-the-fly measurement" is implemented in
SINUMERIK controls. The advantage of this principle is that processing
of the probe signal is carried out directly in the CNC.
The measuring parameters and the results of the measurements
are output extremely clearly in separate displays which are either
automatically deselected at the end of the cycle, or can be acknowledged
when starting the CNC.
The result of the workpiece measurement can either include
automatic offset of the zero point or a correction of the tool wear
by the difference between the actual value and the setpoint.
The measured results can be logged in a file. The Siemens
measuring cycles offer a standard log which you can adapt as
required.
In order to measure tool and workpiece dimensions, a touchtrigger
probe is required that supplies a constant signal (rather
than a pulse) when deflected. The probe should switch bouncefree,
and mechanical adjustment may be necessary.
Multidirectional probes can be used for all tool and workpiece
measurements on turning and milling machines. Bidirectional
probes are treated like a mono probe for workpiece measurements
on milling and machining centers, but are not suitable for
tool measurements.
Monodirectional probes can be used on milling machines and
machining centers with slight restrictions in workpiece measurements,
but are not suitable for tool measurements or for workpiece
measurements on turning machines.
Siemens NC 60 · 2006
4/11
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