Using the standard QC20-W kit
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 is required). 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.
See a complete QC20-W ballbar test animation here; including the new partial arc feature:
Using optional accessories
The QC20-W ballbar system can be enhanced by using
a range of accessories.
lathes using the lathe accessory kit
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 out.
Testing can also be carried out on two axis machines using the VTL adaptor and on many
With all these options, plus the flexibility to use various feedrates,
the QC20-W allows very flexible testing.
Your video guide to ballbar testing
Every QC20-W ballbar kit includes the 'Getting started with QC20-W ballbar' DVD which
introduces the system, takes you step-by-step through the equipment, set-up, installation
and use of the system, and shows you how to carry out a test and review the results.