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A
Focused Factory strives for a
narrower range of products, customers or processes. The result is
a factory that is smaller, and has fewer Key
Manufacturing Tasks. It optimizes performance on a few
dimensions while sub-optimizing on others.
Aircraft
design offers an analogy. Aerospace engineers can
design an aircraft that flies at Mach 3.0. They can design an
aircraft that carries 350 people. They can design an
aircraft that circles the globe on a few hundred gallons of fuel.
They can design an aircraft that lands on a 500 foot runway. They
cannot design an aircraft that does all of the above because the
available technology has limits. So it is with factories.
Wickham
Skinner, in his seminal 1974 article for The
Harvard Business Review, says it best:
"The
focused factory will out-produce, undersell, and quickly gain
competitive edge over the complex factory, The focused
factory does a better job because repetition and concentration in
one area allows its work force and managers to become effective
and experienced in the task required for
success. The focused factory is manageable and
controllable. Its problems are demanding,
but limited in scope."
The
Focused Factory Series
Focused Factories & Lean Manufacturing
Characteristics of Focused Factories Key Manufacturing Task Focused Factory Example Benefits Plant-Within-Plant Reader Comments
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References
LEE,
QUARTERMAN,
How To Optimize Manufacturing Focus", Managing
Technology Today, Vol. 1, No. 5, September/October, 1992.
LEE,
QUARTERMAN, "Manufacturing Focus - A Comprehensive
View", Operations Management Association (OMA)
Conference Proceedings, Warwick, England, June, 1990.
SKINNER,
WICKHAM, Manufacturing In The Corporate Strategy",
John Wiley & Sons, New York, 1978
SKINNER,
WICKHAM, The Focused Factory, Harvard Business Review,
May-June, 1974.
WRENNALL,
WILLIAM, AND LEE, QUARTERMAN, Handbook of Commercial and
Industrial Facilities Management, McGraw Hill, August,
1993. |
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The
following is from Professor Skinner's Article:
Basic
Characteristics
Process
Technologies
Typically,
unproven and uncertain technologies are limited to one per
factory. Proven, mature technologies are limited to what their
managers can easily handle, typically two or three. (e.g.,a
foundry, metal working and metal finishing.)
Market
Demands
These
consist of a set of demands including quality, price, lead times,
and reliability specifications. A given plant can usually only
do a superb job on one or two demands at any given period of time.
Product
Volumes
Generally
these are of comparable levels, such that tooling, order
quantities, materials handling techniques, and job contents can be
approached with a consistent philosophy. But what about the
inevitable short runs, customer specials, and one-of-a-kind orders
that every factory must handle? The answer usually is to segregate
them.
Quality
Levels
These
employ a common attitude and set of approaches so as to
neither over-specify or over control quality and specifications.
One frame of mind and set of mental assumptions suffice for
equipment, tooling, inspection, training , supervision, job
content, and materials handling.
Manufacturing
Tasks
These
are limited to only one (or two at the most) at any given time. The
task at which the plant must excel in order to be competitive
focuses on one set of internally consistent, doable,
non-compromised criteria for success. |