FEATURE MECHANICAL COMPONENTS
Roller guides suit grinding machine production Linear drives from NSK are being used in a
grinding machine to help generate excellent levels of surface finish on machined workpieces
T
schudin’s Cube 350 grinding machine operates using a centreless cylindrical grinding
method, offering both a high-precision capability and the potential to install several machines side-by-side. With its short set-up time for product changeovers, it enables the economic machining of small component batch sizes. With the drive design having a major impact
on the machine’s performance, low-friction, high-rigidity roller guides from NSK’s RA series were specified, and these are helping to generate excellent levels of surface finish on machined workpieces. According to the company, deploying linear
drives in three axes – X-axis/control wheel adjustment, U-axis/grinding wheel adjustment and W-axis/workpiece adjustment – lays the foundation for obtaining both high productivity and flexibility. All drives must operate with micron-level
accuracy. In the case of linear drives, this ethos also applies to the guide elements. As a result,
Tschudin has been using linear guides from NSK’s RA series in its centreless cylindrical grinding machines for many years. Thanks to their proven reliability, these high- performance products are now also demonstrating their worth in the Cube 350. RA series roller guides offer high
maximum load capacity and exceptional rigidity, therefore delivering the traverse and repeat accuracy necessary in machine tools such as the Cube 350. These capabilities are particularly desirable in applications that require superior surface finishes. The RA guideways run with high precision
and low vibration, while at the same time meeting the toughest rigidity requirements. Rigidity is always a key factor in centreless grinding, where pressure and counter- pressure constantly exert on the workpiece, the grinding wheel and the regulating/ control wheel. The RA guideways absorb these permanent forces to deliver
outstanding traverse and repeat accuracy, as well as a prolonged service life. This capability results from, among other
things, specially designed restraining and deflecting components, as well as the use of rollers with the largest possible diameter and a slightly crowned surface to minimise vibration during rotation. The carefully matched spacing and restraint technology of the roller bodies also produces very high uniformity of the displacement forces that occur.
NSK Europe
www.nskeurope.com
PRODUCT RANGE TOX - ® Powerpackage
Air to Oil Intensifi er 2 – 2000 kN
TOX - ®
ElectricDrive up to 1000 kN
TOX
-Presses 2 – 2000 kN
® TOX -Tongs ® TOX
tox TOX®
PRESSOTECHNIK Ltd
Beaconside Stafford ST18 OTW
mclements@tox-uk.com
®
-Joining Systems
HARRISON
www.harrisonsilverdale.com Call today
34 APRIL 2021 | DESIGN SOLUTIONS
SILVERDALE LTD INNOVATIVE FASTENERS making the right connection
T: +44 (0) 1246 296 930
fasteners@harrisonsilverdale.co.uk
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