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Posts Tagged ‘Lean Ops’

Today’s Wall Street Journal has a special section on “Unleashing Innovation in Manufacturing”. Among the more interesting pieces is a report on Roland DG, a Japanese manufacturer of industrial goods like wide format printers, milling machines and vinyl cutters. These all sound like boxes of metal filled with electrical components that should be built up by a team of workers as they move down an assembly line. But that is not how Roland DG rolls. Instead, they have each machine built by one person guided by a computer that displays instructions, makes sure the correct hardware is presented, and monitors what is done through a networked screwdriver (Japanese Firm Uses a Single-Worker System to Make Its Products, Jun 1).

On a recent day in Roland DG’s factory in Hamamatsu, a city in central Japan, one employee was assembling from scratch an industrial printer that ultimately would be more than twice her size and weigh almost 900 pounds. Another worker who had just joined the company’s fleet of part-timers was making a prototype milling machine. Yet another was assembling the dental-crown milling machine.

A computer monitor displays step-by-step instructions along with 3-D drawings: “Turn Screw A in these eight locations” or “Secure Part B using Bracket C.” At the same time, the rotating parts rack turns to show which of the dozens of parts to use. Meanwhile, a digital screwdriver keeps track of how many times screws are turned and how tightly. Until the correct screws are turned the correct number of times, the instructions on the computer screen don’t advance to the next step.

Workers are rarely confused, but when they are, there’s a button to press that will bring the floor manager running to help.

This video gives an idea of the system in actions.

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What’s the right mix of workers and machines in making cars? According to Bloomberg, Toyota has been re-thinking that question and moving to shift more work back to people (‘Gods’ Make Comeback at Toyota as Humans Steal Jobs From Robots, Apr 7).

Inside Toyota Motor Corp.’s oldest plant, there’s a corner where humans have taken over from robots in thwacking glowing lumps of metal into crankshafts. This is Mitsuru Kawai’s vision of the future.

“We need to become more solid and get back to basics, to sharpen our manual skills and further develop them,” said Kawai, a half century-long company veteran tapped by President Akio Toyoda to promote craftsmanship at Toyota’s plants. “When I was a novice, experienced masters used to be called gods, and they could make anything.”

These gods, or Kami-sama in Japanese, are making a comeback at Toyota, the company that long set the pace for manufacturing prowess in the auto industry and beyond. Toyota’s next step forward is counter-intuitive in an age of automation: Humans are taking the place of machines in plants across Japan so workers can develop new skills and figure out ways to improve production lines and the car-building process.

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I have become increasingly taken with the question of what constitutes a good job. Various parts of operations in many industries have become automated over time and that trend will continue. But firms will still need people. Some production steps will be sufficiently nuanced or require too much dexterity that using a robot is (at least for now) impossible. Other setting like retail will favor resources who can move more or less seamlessly between restocking shelves to checking out customers. So what do these jobs look like? Unfortunately, the answer can be fairly grim.

The Atlantic has an article written by an ex-Politico reporter who lost his job and ended up (mostly out of desperation) working at sporting goods store (My Life as a Retail Worker: Nasty, Brutish, and Poor, Mar 11) and found the experience rather dehumanizing.

Of course, I had no idea what a modern retail job demanded. I didn’t realize the stamina that would be necessary, the extra, unpaid duties that would be tacked on, or the required disregard for one’s own self-esteem. I had landed in an alien environment obsessed with theft, where sitting down is all but forbidden, and loyalty is a one-sided proposition. For a paycheck that barely covered my expenses, I’d relinquish my privacy, making myself subject to constant searches.

“If you go outside or leave the store on your break, me or another manager have to look in your backpack and see the bottom,” Stretch explained. “And winter’s coming—if you’re wearing a hoodie or a big jacket, we’ll just have to pat you down. It’s pretty simple.”

When he outlined that particular requirement, my civil-rights brain—the one that was outraged at New York Mayor Michael Bloomberg’s stop-and-frisk policy and wounded from being stopped by police because of my skin color—was furious. …

I’m not sure why—perhaps out of middle-class disbelief or maybe a reporter’s curiosity—I pressed the issue. Seriously: I have to get searched? Even if I’m just going across the street for a soda, with no more than lint in my pockets? Even if you don’t think I stole anything?

Stretch shrugged, unconcerned. Clearly he’d been living with this one for a while.

“Yeah, it’s pretty simple. Just get me or one of the other managers to pat you down before you leave.” (more…)

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Kaizen as charity

food_bank41A few weeks ago we posted a video of how Toyota engineers helped a New York City food bank optimize how it packs boxes of food to be distributed to families still displaced from Hurricane Sandy. Now the New York Times has a more detailed story of how Toyota Production System Support Center has worked with various parts of The Food Bank for New York City (In Lieu of Money, Toyota Donates Efficiency to New York Charity, Jul 26). It turns out that packing boxes is only one project out of many.

One of the more interesting projects is speeding up how quickly clients can be seated for dinner at a Harlem soup kitchen.

Toyota’s engineers went to work. The kitchen, which can seat 50 people, typically opened for dinner at 4 p.m., and when all the chairs were filled, a line would form outside. Mr. Foriest would wait for enough space to open up to allow 10 people in. The average wait time could be up to an hour and a half.

Toyota made three changes. They eliminated the 10-at-a-time system, allowing diners to flow in one by one as soon as a chair was free. Next, a waiting area was set up inside where people lined up closer to where they would pick up food trays. Finally, an employee was assigned the sole duty of spotting empty seats so they could be filled quickly. The average wait time dropped to 18 minutes and more people were fed.

Why do I like this example? (more…)

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Using lean ops at a food bank

Here’s a great video on a New York City food bank using lean operations to improves its distribution operations so it can get more meals to more families.

Thanks to Justin Jugs (Kellogg EMP 91) for bringing this to my attention.

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MK-CE404_HONEYJ_DV_20130630185251One of the challenges of growing a business through acquisitions is how the buying firm can create added value that the acquired firm couldn’t create on its own. One possible solution is that the acquirer can bring some operational expertise that the acquired  firm lacks. That, according to the Wall Street Journal, seems to be the case with Honeywell (Honeywell’s System Sensor Plant Declares War on ‘Seven Deadly Wastes’, Jul 1).

The article describes the efforts Honeywell has put in to improve operations at a plant in its System Sensors unit that it inherited when it bought Pittway Corp in 2000. So what did things look like when they bought the place?

The 1,000 workers inherited at the St. Charles plant struggled to align output with demand. The facility often produced too much, anticipating demand that didn’t materialize. Overproduction and excess inventory are two of the seven “deadly wastes.”

“You couldn’t see the plant floor because there was so much inventory stacked up,” says Karl Odegaard, System Sensor’s director of manufacturing.

Sounds like classic case of push production scheduling, right? Here are some of the steps that they took to improve the process. (more…)

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Chris Anderson, the former editor of Wired and current 3D printing cheerleader, has an intriguing piece in the New York Times (Mexico: The New China, Jan 27). it deals with his experience running 3D Robotics, a maker of civilian drone aircraft. 3D Robotics competes with firms that sourcing their production in China and hence they have had to find a way to take on competitors with low labor costs. Their answer? Tiajuna, Mexico. 3D is based in San Diego so engineering is done on the north side of the border but assembly is done on the south. Labor costs may higher than in China (but, as the article notes, the gap is closing as Chinese wages rise) but Anderson sees many advantages in his firm’s “quicksourcing” model that depends as much on speed as cheap hands.

First, a shorter supply chain means that a company can make things when it wants to, instead of solely when it has to. Strange as it may seem, many small manufacturers don’t have that option. When we started 3D, we produced everything in China and needed to order in units of thousands to get good pricing. That meant that we had to write big checks to make big batches of goods — money we wouldn’t see again until all those products sold, sometimes a year or more later. Now that we carry out our production locally, we’re able to make only what we need that week.

This point obviously depends on owning one’s own facility in Mexico or having a very tight relationship with the Mexican supplier. If a small buyer doesn’t have much negotiating power with a supplier it will still likely face large minimum purchase quantities when buying from Mexico. Still it is an interesting observation and suggests that some start ups may be making ill-advised trade offs between cost savings and flexibility. (more…)

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