During the last 20 years or so the advances in computer
numerical control machinery, CNC, has enhanced the manufacturing
capability of complex shaped springs of virtually all
configurations. This is particularly evident with
helical
springs and most of all those with complicated end forms which
under previous mechanically controlled machines would have
required extensive tooling or a number of secondary operations.
CNC Coiling has facilitated the easier production of shaped
compression springs and of course it has also decreased the set
up time for many conventional shaped compression springs too.
This has been further enhanced with improved ability to control
the quality of these products by using real time on-line gauge
control systems with contact, non-contact and laser control
systems with automatic adjustment for higher levels of process
control.
CNC Forming machines in many instances also have a coiling
capability but the real benefit has been the flexibility of the
CNC system to produce complex variable shapes of end forms for
tension and torsion springs not seen from the mechanical machines of
the past. Producing wire shapes and
strip forms is also a real
possibility with these machines and are as useful for medium as
well as high volume spring requirements. Like any system there
are limitations and associated difficulties to address in
producing certain types of forms and Kato-Entex can provide
design and tolerancing advice in these instances.
