National Machinery LLC,
Transforming cold forming
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Manufacturing in
Action, Source : The Manufacturer US |
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“We are continually developing our products,” said Jerry
Bupp, director of sales operations and marketing. “Every-thing is open to being
updated and we have, on many occasions, changed the face of the industry. For
example, in the early 1990s we introduced our Formax technology. This meant that for the first time formers were constructed with
bolt together bed frames. Prior to this everything had been cast as a single
piece. Not only did the bolt together concept mean that the machines themselves
were easier to make, they were easier to operate. The customer could change the
tooling in a fraction of the time it took with traditional machine concepts.”
Since then, Formax has been
subject to further revision. In the mid-1990s the Formax Plus range was launched. It effectively met the challenge of difficult to
transfer jobs by employing pick-move-place transfer and zero-clearance heading
slide guiding technologies. These were appreciated by the customer for the fact
that they gave greatly improved tool life and better quality products. But
where would you find an operational National former?
Customers in the fastener industry use formers to
manufacture rivets, nuts and bolts. Formers also play a big part in the
automotive sector, producing complex shapes such as spark plug shells, gears,
components for shock absorbers and valve spring retainers. In addition the
bearing industry uses formers to manufacture inner and outer races as well as
precision balls and cylindrical rollers. Other uses can be found in the
aerospace, appliance and machinery manufacturing sectors. To service such an extensive
customer base, National Machinery needs a considerable operation.
The company is headquartered in
Today National Machinery employs around 300 staff. As its
products are expected to last for many years, it needs to be physically close
to its customers to provide effective after sales care. So as well as a support
function in
National was present at the Industrial Fastener and Forming
International (IFFI) exhibition and conference held in
These are the fine feed for the FXP machine, which permits
adjustments of 0.01mm that can be carried out, using the industry terminology,
‘on the fly’. The second advance is digital machine positioning, which allows
the operator to dial in the exact position of the heading slide. However, the
most significant new development is the Blank Rotator.
The Blank Rotator is a self-contained unit that rotates a
blank from a horizontal to a vertical orientation. The significance of this is
that within cold forming, almost all tasks are carried out in the horizontal
plane. The effect of which is that to carry out secondary tasks on a component,
it needs to be removed from a former and re-inserted to another machine. This
may not be a complex process but is always time consuming. The Blank Rotator
eliminates this need. The National Blank Rotator is an engineered to order
item, designed to work on a particular product and already interest is rising.
“A lot of items need to undergo secondary tasks, and anything we can do which
allows our customers to save time during this stage of production is always welcome,”
said Bupp. “We also do a lot of close work with our customers to help improve
their operations. They will often come to us with a part which is only
partially cold formed and ask how it could be produced more efficiently. Our
engineers can then develop solutions and machinery specific to that one
customer.” But National is also capable of improving its own operations as is
shown by its recent software investments.
“We used to run our whole operation off an IBM mainframe,”
said Doug Schubert, sales manager for the mid-west region. “We had it for many
years and much of the software was written inhouse.
It control-led our material resource planning (MRP) system but every department
was basically running its own database. All this information needed to be
merged and the financial reports it produced were not very good. Another
problem was that it did not run in real-time, so the decision was made to
replace it.”
National chose software developer, BAAN for this project.
BAAN was instructed that the new system must link in all aspects of National’s
operation, operate off a single database and provide accurate, real-time
information which could be easily accessed. The result was its 5b application
which National is one of the first companies to use in the
5b is a client server based system fronting an Oracle
database. National had the relevant hardware installed and a host of new PCs
appeared around the factory. To ensure that the changeover to the new system
went as smoothly as possible, it initially put together a full time team of
eight. The team members were drawn from various departments within the
organization including sales, purchasing design, engineering, finance/account-ing, material control, manufacturing and most importantly,
a very capable and dedicated enterprise resource planning (ERP) support group.
These people worked together for two years but over that period a further 80
individuals were involved on an ad hoc basis.
“We had seen how other companies made similar switches, so our goal was to go for a ‘vanilla’ software option,”
said Schubert. “We thought it better to tailor our processes to suit the
software rather than customize modules to match the way we worked. We began
work in late 1998 and the first department to partially change over was finance
in September 1999. We then carried on working with the software, in conjunction
with BAAN, on an isolated development server, testing and re-testing to assure
a ‘best-fit’ between requirement and software functionality.” The full
switchover occurred at the end of 2001 and the new system has been very well
received in the plant.
Other recent developments at National include the update of
its manufacturing area with the introduction of Mazak Integrex and Makino A88 machines. The Integrex is a combination turning and milling machine and
in some cases these machines have decreased part costs by a significant
percentage. This factor is especially important to National because of its very
small lot sizes. New machinery has also been ordered for delivery later this
year to improve on National’s tooling and development capabilities. The order
includes a CNC mill for 3D contours and a CNC plunge EDM for the tool room. The
CNC machines will improve the company’s capability to make complex tooling
shapes, which in turn will enable National to achieve difficult parts easier
and quicker for customer development jobs. The tool room capacity is important
to help customers with parts that can remove secondary operations or produce
parts that weren’t possible before. A vital factor in
National’s sales strategy. On the test and development floor a total of
12 new units for wire drawing and wire payoff will also be added.
National has shown that it’s a company that takes great
pride in its work and results but its best achievement is its exceptionally low
staff turnover. It takes two years for an untrained recruit to be brought up to
speed but National places great store in staff retention. As a result the
workforce feels valued and is very receptive to new ideas. National knows
without the capability of the staff, new ideas will just remain in the
pipeline.
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