The Lean
Manufacturing Process and Six
Sigma
The lean manufacturing process and six
sigma should be used together in order to have the most
effect in the bottom line of a business. By combining
resources and integrating programs, more can be
accomplished with less expenditure of time and
money.
Is the lean manufacturing process and six sigma
in conflict?
Six
sigma consultants sometimes tend to have an elitist
strain, with black belt experts poring over numbers and
engaging in long term projects that can be quite far
removed from the shop floor. Many lean manufacturing
programs, such as those centered on Kaizen events, place
an emphasis on teamwork. A recent book,
“The Perfect
Engine,” by
Anand Sharma and Patricia E., highlights the benefits of joining
forces in a sort of Lean-Six Sigma
approach.
When most companies begin
their lean manufacturing process, they begin with programs
such as 5S, and Kaizen
blitzes in order to reduce waste. Once these
wastes were eliminated, a need is revealed to address the
underlying problem. The need for some kind of
measurable, statistical method soon becomes apparent and
this is where the marriage of lean and six sigma can make
such a difference.
You can order a copy of
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Engine here.
Lean manufacturing and Six Sigma go
together
By combining methods,
results are improved as baseline levels of performance are
established. Now statistical tools can be used to ensure the
greatest impact.
Now that the lean
manufacturing process has revealed the shortcomings, Six
sigma offers a way to solve the problems in a sequential,
procedural manner. By using the DMAIC cycle (design,
measure, analyze, improve, and control), realistic solutions
to chronic problems can be applied.
In this way, the root
cause of the problem is much less likely to be overlooked,
and long term, ongoing solutions can be logically applied
and progress measured.
Lean manufacturing and six sigma need each
other
If you just reduce waste
you may not ever get to the underlying cause, and if you
just do Six sigma, you may never maximize the full potential
of your organization. Six sigma really needs lean to enable
it to perform optimally.
One of the characteristics
of six sigma is it's ability to link programs together so
they work in as a flow, rather than disconnected, stand
alone tools.
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Top management needs to
be involved
Six sigma black
belts must not be
allowed to engage in months long programs that will not have
any impact on the bottom line of your company. It can and does
happen that vast amounts of time and money are spent on
well-meaning programs that just don't touch the bottom
line.
On the other hand,
chronic, deep seated problems cannot be solved by intuitive,
short-term 5S and Kaizen programs.
By having top management
working to put these two complimentary programs on the same
team, you operations will run more efficiently and your
profits will increase.
If you want to learn how to use the lean
process, I highly recommend the Lean Manufacturing
web-based training course. You will get a thorough
understanding of all the components of lean manufacturing,
including Value Stream Mapping, six sigma, 5S and much
more.
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