The range of features and components that
must be measured in a typical factory means that
need a flexible measuring solution. A single sensor and
stylus configuration will not be sufficient in most cases.
Unless you are measuring a simple component, you will need
to change your stylus configuration to suit different
measurement tasks. This can be done manually using a
threaded connection, but probe systems are now available
with a repeatable, automated means to switch styli.
This greatly increases your flexibility by allowing you to
access features that demand long or complex styli, as well
as using different tips (sphere, disc, cylinder) needed for
different surface configurations. With automated stylus
changing, all of this can be achieved automatically,
reducing operator intervention and increasing measurement
Sensor changing A scanning sensor is the most
flexible sensor you can fit to your machine, since it can
perform discrete point measurement as well as scanning.
However, it is not the optimum sensor for discrete more
specialised tasks like measurement of soft materials (where
a non-contact sensor will be best).
Sensor changing requires a repeatable, automated joint
between the probe head or CMM quill and the probes that you
want to use. You will also need a means to store those
sensors that are not in use on the machine.
The ultimate flexibility Many manufacturers find that
they need the flexibility of both stylus changing and sensor
changing. The combination means that you will always be
using the right sensor and stylus for each task - increasing
your measurement accuracy whilst minimising measurement
Stylus and module changers
Stylus Changing Racks allow the automated use of a variety
of stylus configurations and eliminate the need to requalify
SCR200 The SCR200 provides automatic, high
speed changing of up to 6 stylus modules. The rack is
easy to set up due to its close tolerance design which
requires only 8 probing points to datum the
installation. The probe is automatically inhibited
during the change cycle which is fully managed by the PI
200 so that no additional communications are necessary.
A choice of operating modes permits either direct, high
speed entry to the rack ports or fully tamper resistant
operation as required. In the event of rack overtravel a
stop signal is transmitted to the CMM controller. A
self-test mode is provided for system diagnosis.
MCR20 The MCR20 module changing rack has the
capability of storing up to six probe modules for
automatic changing under measurement program control.
Probe triggers are inhibited during module changing by a
proximity switch system, which eliminates the need for
an electrical connection to the MCR20.
The MCR20 is designed to securely hold the stored probe
modules for automatic changing and to protect them from
airborne contaminants which may be present in the
SCR600 The SCR600 is a passive stylus change
rack for use with the SP600 & SP600M, it requires no
electrical connections. It is protected from overtravel
(in the probe entry direction) by a mechanism in the
base which can be manually reset. It houses up to 4
stylus modules per rack and any number of racks can be
used in a system.
FCR25 The FCR25 flexible change rack is a
triple port unit that allows any of the SP25M system
elements to be rapidly exchanged in any of the ports.
The FCR25 mounts directly to Renishaw's MRS modular rack
system, providing configurations with 3, 6, 9 or 12 etc.
ports. Alternatively, stand-alone racks are also
available with 3 or 6 ports, ideal for smaller CMMs and
optical CMMs where machine working volume can be more
Probe autochange systems
Autochange systems facilitate fast, automatic autojoint
probe exchange without the need for probe requalification.
Many Renishaw probes feature an Autojoint - a kinematic
joint that enable repeateable reconnection of sensors to a
head such as the PH10M motorised indexing head. The ACR1 and
ACR3 racks enable many sensors to be stored on a CMM, with
automated switching between them for greater measurement
ACR1 Integrated CMM probe exchange system
Mounted within the CMMs working envelope, Autochange
facilitates fast, automatic probe exchange without the
need for requalification. Fast "probing to probing"
cycles are achieved by the probe head docking one probe
and selecting a different one. The high repeatability of
the 'Autojoint' removes the need to requalify between
A passive probe exchange system for DCC CMM's mounted
within the CMM's volume on the MRS.
The ACR3 probe changer provides an automated means to
swap probes, allowing you to use the best sensor for
each specific measurement task you face. This makes your
machine more flexible and improves the accuracy of your
measurements by ensuring that you are always using the
best probe for the job.