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Author Topic:   Six Sigma
Mike525
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posted 12 November 1999 11:34 AM     Click Here to See the Profile for Mike525   Click Here to Email Mike525     Edit/Delete Message   Reply w/Quote
Marc:

Didn't know where else to place this subject, so I put it in a high visibility folder.

Is anyone interested in starting a thread on this subject? Seems every where I look, I see mention of six sigma and black belts. What is this program, where can I get GOOD information on it (without paying a small fortune), and what the hell is a six sigma black belt. Does anyone know what the tools of six sigma are? Is this a QMS or "just a problem solving methodology?"

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Marc Smith
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posted 18 November 1999 04:14 AM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
Ummm, well, I'd start a thread in the Statistical Techniques forum. In fact, I'll move this thread there. I'm not a six sigma guru. I understand the concept, but there is 'disagreement' as to whether the 'theoretical 1.5 sigma shift is 'real'.

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Don Winton
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posted 23 November 1999 09:19 PM     Click Here to See the Profile for Don Winton   Click Here to Email Don Winton     Edit/Delete Message   Reply w/Quote
Yea, I am not up on this six-sigma stuff either. But, I do believe the Black Belt term is given to persons who complete some six-sigma school. But, I could be wrong.

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Don Winton
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posted 26 November 1999 06:03 PM     Click Here to See the Profile for Don Winton   Click Here to Email Don Winton     Edit/Delete Message   Reply w/Quote
-------Begin Snip-------

Articles-Publication Date 11.2.1998
Six Sigma Secrets

Applied in its broadest sense, Six Sigma methodology is improving AlliedSignal's product-development process.

While the corporate growth office at AlliedSignal is charged with improving functional capability as well as diffusing and exploiting synergies between businesses, it also is charged with improving the very processes of innovation and product development. To meet that challenge, the company has expanded the role of Six Sigma quality methodology.

Traditionally associated with statistical methods of reducing variability and increasing robustness of manufacturing processes, AlliedSignal applies it as a philosophy and rallying cry for process improvement in general. Where applicable, statistical approaches still are utilized, but as they relate to innovation and product development. Six Sigma also includes concurrent engineering principles, multifunctional teaming, program management, active inclusion of voice of the customer, and design principles to cut cycle time, build in quality, and create more value for customers.

"Before, product development generally occurred by happenstance." says Barry Siadat, the company's chief growth officer. "In the last year, we have started to make this as professional and controlled as possible. Six Sigma helps us make commercialization a process that we can map, and then apply tools that put some rigors in it, and make it a fact-based decision process.

"Often these tools are models where application of statistical principals can maximize results and reduce variability, including conjoint/trade-off analysis designed to pinpoint combinations of benefits most desired by customers; business and risk analysis, which helps identify program risks, define their probability of occurring, and determine program impact if they occur; and design-of-experiment techniques, which allow multiple independent variables to be evaluated at one time rather than individually.

"I think Six Sigma, as it applies to product innovation, will have an impact in three ways. First, it will increase our success rate in the new products. Second, it will help us shorten cycle time and gives us speed to market as a competitive advantage. And third, by doing things faster it helps us reduce costs so we can get more done with fewer resources," Siadat says. "In the aerospace industry, the greatest customer-impact issues for us are lower cost of ownership and increased reliability," says Russ Ford, vice president of quality and Six Sigma, Engines Div., Phoenix. "Both of these tie directly to engine design, so if you design a product to last for a certain number of hours or cycles, it doesn't matter how good the manufacturing capability is, you have some inherent limits to the product put in place by the design. Six Sigma principles allow us to reduce variation in performance up front in the design."

Applying statistical techniques to the design of the new AS900 engine for midsized corporate and regional jets slashed time-to-certification from a typical 42 months to 33 months, workhours to project completion by 30%, and variability in fan modules by 50%, eliminating much of the adjustments required to tune an engine.

While Six Sigma quality is the goal for any product design at AlliedSignal, the design prediction for the AS900 engine is currently 5.2 Sigma, up from 2.3 Sigma for engines designed just two years ago. "We have been building engines for 50 years, so we have a long history and opportunity to advance the quality and production levels, but Six Sigma has shown the most promise of anything we have used," says Ford.

Understanding of Six Sigma principles is so important in the engines group that it is the division's goal to have its 5,600 employees certified as Six Sigma "green belts," which requires 40 hours of training and 40 hours of project work to be completed by the end of 1999. Overall, application of Six Sigma principles has saved the company $500 million in 1998, $1.5 billion to date, and is projected to save $600 million in 1999, says spokesperson Kristin Lemkau.

-------End Snip-------

Regards

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Marc Smith
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posted 27 November 1999 01:13 AM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
I didn't realize 6 sigma is used in the design phase. I'm gonna have to re-read some of my old documentation.

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Don Winton
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posted 27 November 1999 10:25 AM     Click Here to See the Profile for Don Winton   Click Here to Email Don Winton     Edit/Delete Message   Reply w/Quote
Yea, Marc. That is what I found interesting as well.

The current Minitab newsletter has a pretty good article as well. It can be found at:

http://www.minitab.com/resources/KeepingTAB/kt31/KT31.pdf

Regards

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Brian Dowsett
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posted 03 December 1999 07:22 AM     Click Here to See the Profile for Brian Dowsett   Click Here to Email Brian Dowsett     Edit/Delete Message   Reply w/Quote
In answer to the earlier question regarding what is a blackbelt.
My blackbelt training involved 5 weeks of fulltime training spaced out over 5 months, with project work in between. The subject matter was in the use of a variety of Quality tools but linked to a set methodology for process improvement.
Certification was by submission of the project. Teaching was done by our own master blackbelts, who I believe are certified by the six sigma corporation.
Having been through similar training in another company, I'd say the difference here is a)That the project had to be real and had to deliver improvements in order for the candidate to be certified b) That in this organisation the six sigma philosophy comes from the top down, so you are more likely to get the backing and encouragement to get things done.
I know there have been criticism elsewhere of some of the stats at the heart of the 6 sigma training, but i'd argue that the numbers don't matter that much, as long as the majority of people in an organisation are committed to improvement and are judged by the same criteria.

Brian

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Don Winton
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posted 27 December 1999 01:28 AM     Click Here to See the Profile for Don Winton   Click Here to Email Don Winton     Edit/Delete Message   Reply w/Quote
I recently converted an Air Force paper I had into PDF format. To download it, click *** Dead Link Removed ***

[This message has been edited by Don Winton (edited 27 December 1999).]

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Marc Smith
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posted 27 December 1999 01:54 AM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
Good paper.

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Don Winton
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posted 27 December 1999 02:30 AM     Click Here to See the Profile for Don Winton   Click Here to Email Don Winton     Edit/Delete Message   Reply w/Quote
Thanks.

I recently downloaded a neat utility called 'PrintToPDF' (MAC if you are interested) but was wondering if it was working OK ($20.00 I think. Much cheaper than Adobe). If anyone has problems reading it, let me know. I am still a newbie.

Regards

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Marc Smith
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posted 27 December 1999 02:40 AM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
Reads fine to me. I have the Acrobat full program - don't have hte reader to try it with.

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Mike525
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posted 05 January 2000 09:37 AM     Click Here to See the Profile for Mike525   Click Here to Email Mike525     Edit/Delete Message   Reply w/Quote
Don:

Excellent paper - I've done a little research on my own regarding six Sigma - from what I've read it sounds like a very viable program - and certification is based on actual results - however, I believe like any other program it is a tool to be used to achieve reuslts, and is only as good as the individual using it.

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Marc Smith
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posted 06 January 2000 05:51 PM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
Also see https://elsmar.com/ubb/Forum10/HTML/000014.html

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Marc Smith
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posted 21 February 2000 07:35 AM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
Also see: https://elsmar.com/ubb/Forum10/HTML/000000.html

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Marc Smith
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posted 14 May 2000 01:02 PM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
Also see:
https://elsmar.com/ubb/Forum10/HTML/000014.html
and https://elsmar.com/ubb/Forum10/HTML/000102.html

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johno
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posted 25 July 2000 05:09 AM           Edit/Delete Message   Reply w/Quote
I've not attended any formal classes on the subject but the few texts and papers that I've looked thru seem to use the same assumptions that almost everyone else does, and that is to use population parameters instead of sample statistics. If using say a 30 piece sample and only having a sample mean and sample standard deviation it's tough to make statements about 3.4 ppm at any reasonable level of confidence without resorting to large intervals.

The 1.5 sigma meanshift is just an assumption, and either you buy it or you don't. It's a better assumption than no meanshift, which is what a lot (most ?) seem to use when something like statistical tolerancing. The 1.5 sigma meanshift wasn't conservative enough for a lot of our processes so we used uniform distribution assumptions.

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Steven Truchon
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posted 28 July 2000 03:01 PM     Click Here to See the Profile for Steven Truchon   Click Here to Email Steven Truchon     Edit/Delete Message   Reply w/Quote
One of our major customers and current "driver" of our Six Sigma program taught us that the belt color is in direct reference to what percentage of your worktime is dedicated to the Six Sigma function or projects. A black belt was at 100% (fulltime) and a green belt was at 10 or 20% and the other colors were somewhere in between. That is from one of the makers of Tim-the-ToolMan-Taylor handtools and small kitchen apppliances.

quote:
Originally posted by Don Winton:
Yea, I am not up on this six-sigma stuff either. But, I do believe the Black Belt term is given to persons who complete some six-sigma school. But, I could be wrong.

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