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鐜悆鐬湜
GLOBAL OUTLOOK
Aside from investing in new machines, Hanna While finished parts can end up different from
reorganized its shop floor so the workflow path is one another, many of them start out the same. Part
now shorter. Parts can flow through the shop based modularity, wherever possible, helps reduce cycle
not only on size and features, but also on customer times as well as overall job turnaround. The shop
needs, specific delivery times and whether they are will machine parts to certain semi-finished stages,
part of a stock job. Plus, instead of handling only one stock them and finish-machine them to a customer鈥檚
specific part size, the shop鈥檚 machining cells now specific needs. The shop determines what to stock
process various sizes of a particular part or family of semi-finished based on customer order history, and
parts. on the most popular sizes and types produced. What
is stocked semi-finished can often change, however.
鈥淲hile adding advanced machine tool
technology was a huge factor in our production The Mazaks鈥?common-platform controls also
improvements, simply restructuring part flow into reduce job change-over and turnaround times. The
simple straight lines made just as big an impact as shop trains all its machinists to program the Mazaks
the machines,鈥?Mr. Warneke says. so they can do their own setups and programming
at the machines, as well as seamlessly move from
In addition to being lean, Hanna鈥檚 operations operating one type of Mazak to the next. This
must be flexible and setups/change-overs as fast as increases throughput and eliminates time wasted
possible in order for the shop to remain competitive. waiting for programs that were developed offline
The flexibility of the Mazaks enable Hanna to set up then sent out to the shop floor. In some instances in
for what it runs 90 percent of the time and work in which job lot sizes were only four or six components,
the remaining 10 percent of unscheduled parts with waiting for the program could take longer than
less disruption to the shop. actually machining the parts.
To shorten setup times, Hanna uses simple The Mazak controls provide conversational
setups and quick-change tooling/workholding or EIA programming, and they feature onboard
wherever possible, in addition to standardized graphics that display exactly where problems might
workstations and machining cells that are equipped occur. With such capability, the machinist can quickly
with all the necessary hand tools and gages. For fix problems without having to run back and forth
example, the shop made special vise jaws that enable between a programming office and the shop floor.
it to hold square-shaped parts in the QTN鈥檚 three-jaw
chuck. This eliminates the hassle of switching over to 鈥淥n our older machines, we鈥檇 typically scrap
either a two- or four-jaw chuck. two or three pieces trying to get that first good part,鈥? Mr. Laratta says. 鈥淥n the Mazaks, the first piece is
On-machine tool-touch measuring, along with a good one, and we can keep programs right in the
ample tool storage capacities, help further reduce machine controls.鈥?setup times and speed job change-overs. According
to Mr. Laratta, the shop鈥檚 machinists teach tool The controls and other features of the Mazak
location on the Mazak machines by simply touching machines were a big part of the complete culture
the tooltip to the machine鈥檚 Tool Eye automatic change at Hanna. According to Mr. Warneke, they
tooltip measuring system. Prior to such capability, have changed the way the shop manufactures. It can
the shop had to make a test cut, measure the part, now instantaneously react to changing customer
run the tool back to home and make the necessary needs and provide high-quality cylinders delivered as
offset adjustment, he says. This lengthy process often quickly as possible.
resulted in at least one scrapped part.
绗?4鏈? 鏁版帶鏈哄簥甯傚満 路85路
