Lean Manufacturing and Six
Sigma
Lean manufacturing 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.
Are lean manufacturing 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
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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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