The standard QC20-W ballbar kit includes
a 100 mm long ballbar assembly and 50,
150 and 300 mm long extension bars.
By assembling the ballbar with different
combinations of extension bars it is
possible to carry out ballbar tests
with 100, 150, 250, 300, 400, 450, 550
or 600 mm radii.
Redesigned ball mounts (including new
centre pivot and tool cup extension)
allow the QC20-W to carry out additional
220° 'partial arc' tests in planes through
the centre pivot axis. This means that
you can now carry out ballbar tests
in three orthogonal planes without the
need to reposition the centre pivot,
so speeding up testing (if carrying
out 'partial arc' tests with a radius
greater than 150 mm custom fixturing
The results can also be used in the
new 'volumetric analysis' report function
(see software section) with the assurance
that all data has been gathered around
the same point.
The QC20-W ballbar system can be enhanced
by using a range of
With additional extensions it
is possible to perform tests
up to 1350 mm radius.
The small circle kit allows
50 mm radius tests to be carried
Testing can also be carried
out on two axis machines using
the VTL adaptor and on many
lathes using the lathe accessory
With all these options, plus the flexibility
to use various feedrates, the QC20-W
allows very flexible testing.
Every QC20-W ballbar kit includes the
'Getting started with QC20-W ballbar'
DVD which introduces the system, then
takes you step-by-step through the set-up,
installation and use of the system,
showing you how to carry out a test
and review the results. The DVD
is available, free of charge, from your
local Renishaw office.
Alternatively, the content can be viewed
chapter by chapter on the LaserCall
'Getting started with QC20-W ballbar'.