Oct 12 2018

For Lean Production to Work, a Company Needs to Be All In | Ellen Rosen | The New York Times

 

“For a company in Chesterfield, Mo., it involved something as seemingly simple as attaching a trash can to an employee’s chair. For one in St. Louis, it meant leaving the cover off an electronic temperature controller. For others it’s meant gathering employees from the chief executive on down for what’s known as Kaizen events — based on the Japanese word for continuing improvement. What do these seemingly unconnected efforts have in common? They are approaches to what is known as lean manufacturing — or, more recently, lean production — aimed at streamlining production processes, enhancing employee engagement and increasing profits.”

Source: The New York Times(10/11/2018)

Michel Baudin‘s comments: Thanks to Kevin Hop for drawing my attention to this article. Like him, I do read The New York Times regularly and usually appreciate the quality of its reporting. This article, however, does not measure up. It reflects the conventional wisdom on Lean manufacturing which, if anything, explains why so many implementations fail.

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Sep 3 2018

10 Lean Manufacturing Ideas for Machine Shops | Shahrukh Irani | Modern Machine Shop

Machined Workpiece

“Lean manufacturing as it is traditionally practiced is of benefit to machine shops, but the extent of its benefit is often limited. The Toyota Production System on which lean manufacturing is based was designed for assembly plants that produce automobiles by the thousands. While an assembly plant focuses on low-mix, high-volume production, a typical machine shop focuses on high-mix low-volume production. A machine shop and assembly plant cannot expect to realize the same lean benefits with the same lean tools.”

Source Modern Machine Shop

Michel Baudin‘s comments: Shahrukh and I have long disagreed on these issues and I still take exception to many of his general statements. On the other hand, I agree with most of his recommendations.

Machining is not all about High-Mix/Low Volume

While there may be many small machine shops doing high-mix/low-volume production, the bulk of machining is done in larger Automotive and Aerospace & Defense shops that don’t fit this description. Automotive machine shops remove small amounts from hundreds of thousands of aluminum castings/year with product lives on the order of 4 years; aerospace machine shops, large amounts from forgings in exotic alloys in the hundreds/year with product lives in decades.

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Aug 14 2018

BOMs at Toyota | Discussion on LinkedIn

I shared the BOM rap post with the TPS Principles and Practices group on LinkedIn, in order to tap into the TPS knowledge in this group, and this is what I learned from Todd McCann, Carey Boggess, Jeff Merriss, Hein Winkelaar, and Gary D. Stewart.

My thanks to all for their valuable input on the control of BOMs within Toyota and the uses BOM data is put to. What these responses did not address, however, is the information model for the BOMs, including what items are in and how BOMs are structured at Toyota, as opposed to other companies.

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Aug 5 2018

Why I was wrong about 2- second Lean | Dan Markovitz

 

“It’s time to admit that one of my consulting approaches has failed. I’m a huge fan of Paul Akers’ 2 Second Lean philosophy. It’s simple, easy to understand, and has an intrinsic appeal: “fix what bugs you.” “Figure out how to do your job two seconds faster each day.” Who wouldn’t sign on to a lean program that promotes that mindset?

So off I went to my clients, with Paul’s videos embedded in my PowerPoint presentation, ready to show them how 2 Second Lean is the answer to their productivity problems, their low employee engagement and morale scores, their mediocre customer service, and their too-high defect rates. And I failed.

When I look back at the clients I introduced to Paul’s method, I have to be honest and admit that a more traditional, kaizen event-driven approach would have served them better. 2 Second Lean didn’t hurt them, but they didn’t reap the rewards that they wanted, and that I promised. 

I missed the most obvious fact: 2 Second Lean is simple. But it’s not easy. The commitment required of the president is enormous.”

Sourced from Marcovitz Consulting

Michel Baudin‘s comments:

Is the approach simple or simplistic? Perhaps, the mistake is assuming that a single method is all you need, whether it is the “2-second” approach or the oxymoronic “Kaizen event.” It’s the panacea fallacy. To improve a factory, you need a range of different approaches, from tiny improvements an individual can make within his or her area of responsibility without asking anyone’s permission to projects like line redesigns that may occupy dozens of people for months.

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Aug 1 2018

The BOM Rap

Why bother with a yawn-inducing topic like bills of materials (BOMs)? Bring it up with manufacturing professionals and their eyes glaze over instantly. And the Lean literature is mute on the subject. I even asked Michael Ballé for his input on the subject and he responded that he had none to offer.

Yet everyone involved with assembly agrees that BOMs are at the core of their activity, that BOMs have chronic accuracy issues, that the workarounds to these inaccuracies impair the companies’ ability to update and customize products, and that BOM maintenance hogs resources. Perhaps it’s worth giving the subject some thought and having a conversation about it.

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Jul 27 2018

Lean Thinking: ingredients, incubation and diffusion | John Shook | Planet Lean

Ford and Toyota

“What does it really mean to say that lean thinking is not uniquely Japanese? First, it indicates that not all Japanese companies are ‘lean.’ […] Secondly, we have successful examples of lean applications all around the world – not just in Japan […]. We know these things to be true.

To say, however, that lean is not uniquely Japanese doesn’t mean that there is nothing Japanese about it. So, let’s explore this second, little explored, idea. […] by asking more questions. One critical question we can ask ourselves is: “Could have TPS emerged anywhere other than Japan?” And finally, “What, if anything, is Japanese about lean thinking?”

My attempt to address these questions – an ever-changing effort as I reflect more and the world around us keeps evolving – has taken the shape of the graph you see below, which illustrates what I call the “Toyota double funnels”. There are three main sections to the graphic:

  • The left funnel represents a selection of key ingredients that, combined, have led to the creation of Toyota’s way of working.
  • The spiral in the middle of the graphic represents the actual genesis of the Toyota Way, TPS, TPD, TMS and lean thinking, which can be traced back to a 30-year period of incubation, between 1950 and 1980.
  • The right funnel represents the diffusion of this body of knowledge around the world, which started around the time of the NUMMI experiment, in 1984.

[…]I believe the spread of lean has been both a matter of diffusion and of dilution.[…] Along with the dilution, there’s been more than a little delusion, aided by consultants selling things under the name of “lean” that are far from the original intent of the thinking, system, and application.”

John Shook’s double funnel is reproduced here. Click on it to enlarge or view it on Planet Lean to click on each item and see more details.

John Shook’s double funnel

Sourced through Planet Lean

Michel Baudin‘s comments: As usual, John Shook’s post is both grounded in deep knowledge and well written. The infographic is also clear and the popup boxes of information attached to each item on Planet Lean are a valuable enhancement.  But I still don’t buy everything in it.

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