Factory
In the past, robotic vision was confined to the laboratory and perhaps a few custom applications. Nowadays, robust robots are using sight in non-fixtured, unstructured factory environments, thanks to the integration of artificial intelligence with traditional industrial robotics. A camera, robot and robot controller are linked to a computer, allowing the robot to see, move and react much like a human being. Many automotive parts manufacturers have embraced vision-guided robotics (VGR) and integrated the technology into their factories.
It was business as usual when Windsor, Ont.-based Tri-Way Manufacturing Technologies Corporation received an order from an automotive parts supplier. The order was to build an eight-station dial table machine, which would produce left and right aluminum rocker covers for General Motors.
An eight-camera machine-vision system helps a 21st-century fighter jet prepare for takeoff
When BMW Manufacturing Corp. decided to introduce the world's first luxury sport activity vehicle at its South Carolina plant, the X5 SAV, the automotive manufacturer knew it would have to expand its production and storeroom floor space. The company figured it would require an additional 900,000 square feet to accommodate the new models and increase in production volume.
Freelance reporter Peter Fretty recently visited Madison, Ind., and toured automotive-parts manufacturing plants that have benefited from automation. One such plant, Arvin Sango, has a unique automation story: Almost every piece of automation equipment found in the factory was the idea of a shop floor worker who recognized a production process that would benefit from automation. The company says it encourages employees on the shop floor to keep in constant communication with upper management and share ideas for improvement. Managers take their employees' opinions seriously, and often implement them.In a business as complex as manufacturing, discussions on ways to streamline plant operations usually involve plant managers, chief executive officers, other high-ranking decision-makers and, when necessary, outside consultants.But Arvin Sango Inc., a Madison, Ind.-based manufacturer of automotive exhaust systems and stamped components, is proving that sometimes the most innovative and successful ideas for improvement come straight from the men and women running production lines.Since the company was founded in 1988, the production team has been involved in a kaizen program in which team members regularly brainstorm ways to improve operations. According to Scott Hubbard, general manager, operations, the company automated dozens of production processes based on suggestions from shop floor staff during these kaizen blitzes. Kaizen, which is a Japanese term, loosely means "good change." Some companies hold kaizen meetings to discuss business practices with employees and look for better, more efficient ways of running operations."We have a unique level of stability that encourages [our factory floor employees] to stretch outside their normal boundaries and continuously look to improve their individual areas, whether through increased automation or other types of process improvement," says Hubbard. "We have almost come to expect them to make recommendations and be an active part of the organization's success."Nicole Browning, a production team member, agrees that the company's orientation to its shop floor workers is unique. "[At] other plants I've worked for, [one] had to worry about being laid off and getting bumped to different shifts," she says. "Other plants rarely have the direct communication with managers that we have at Arvin Sango. We [at Arvin Sango] know that if we want to make a change to improve our jobs, we can go through the kaizen program ... [Sometimes] ideas are actually implemented by the member or members who come up with them, and management is willing to lend a hand if needed."Star Dupree, another production team member, echoes Browning's opinion. "Employees are treated with respect and our ideas are taken to heart as we are the ones running production," she says. "It is a breath of fresh air to know our opinions are respected and actually implemented. Opinions and ideas from the production work force are respected because who would know better than the operator on how to improve production and quality?"One improvement idea that the company implemented involved the firm's largest steel press. The steel press makes steel shells for one of Arvin Sango's largest production assemblies. Shortly after the new press was up and running, production staff recognized that steel sheets were misloading far too often, and workers wanted to find a solution to the problem. "Knowing we needed to stop misloads was the easy part," says Randy Lockridge, the company's production manager. "Trying to figure out where it was coming from is where it got tough. One of our maintenance men came up with the idea to install a camera system to help us determine which end of the sheet feeder was causing the problem. Now, the vision system shuts the machine down when there is a problem to make sure that a misload does not cause line failure or excessively high scrap."Lockridge says his staff came up with the camera system idea during one of 50 kaizen blitzes they held to discuss the 2,000-tonne steel press. "It was typical of the kind of ideas we now expect from the talented people we have working here," he says. The kaizen program played a major role in decreasing the number of unscheduled weekend workdays, adds Lockridge. In 2003, employees worked 23 unscheduled Saturdays and seven unscheduled Sundays, whereas in 2004, employees worked only eight unscheduled Saturdays and no unscheduled Sundays."We have doubled our GSPH (good stamps per hour), and gone from three shifts to two shifts," says Lockridge. "In this specific example, daily downtime decreased by 70 percent, and misloads in January 2003 were 8,300-a number that by October 2004 dropped to only 15 [misloads]."Another employee idea the company implemented was to design and build stationary stands that allow problem-free transfer of parts between dies. The employee came up with the idea during a kaizen blitz in which production team members discussed problems related to the plant's automated substations. Each time the steel press would stroke, the original strands of the press, which were attached to each die, would bounce and misload. The staff member's idea solved the problem. Does that mean that all ideas are approved, or that each idea put into practice is a success? Not quite. But workers are rewarded regardless because, Lockridge says, the fact that his team is merely thinking of ways to increase company profitability is good enough. "Most of us learn from doing," Lockridge says. "Most of the time, we don't get [things] right the first time. But bad suggestions are the seeds for many great ideas."Peter Fretty is a freelance reporter specializing in automation and manufacturing topics. E-mail him at This e-mail address is being protected from spambots. You need JavaScript enabled to view it . Four ways to motivate your production team 1 Start a norm, but be patient. Establish a norm at your company of sharing ideas and expressing opinions, and keep it going. "If people do not see this as a norm that will last forever, they won't buy into it and you will lose before even getting started," says Lockridge. Speaking from experience, Lockridge says changing the overall employee perspective takes time like any other change. 2 Don't forget to praise-even the bad ideas. "Even praise the bad ideas for the effort that was made, and make it a point to take those ideas and keep expanding them until you get the desired results," Lockridge says.3 Let employees know that it is safe to voice their opinions. No one wants to work themselves out of a job. Reassure employees that their automation and improvement ideas will not necessarily result in worker layoffs. Sometimes leaning out production practices frees up personnel to tackle new projects, such as extending existing product lines, adding new product lines or revamping product designs. 4 Don't force ideas, and prepare for the inevitable lull. "You can not expect so many ideas per month per person or line. The only thing people have to do is die and pay taxes," Lockridge says. Also, expect dry spells sometimes when your employees run out of ideas, or worse, lose the motivation to think of ideas. When this happens, it is time to inspire workers to dig deeper, and to reinforce that there are no boundaries to their imagination.
The perfect bun: That's one of the goals of an automated product-inspection prototype under development by Georgia Institute of Technology researchers working with Flowers Bakery in Villa Rica, Georgia. The first phase of the work is introducing continuous imaging technology to the large-scale production of sandwich buns for fast-food restaurants, which hold to exacting product specifications.
Page 45 of 45

Subscription Centre

 
New Subscription
 
Already a Subscriber
 
Customer Service
 
View Digital Magazine Renew

We are using cookies to give you the best experience on our website. By continuing to use the site, you agree to the use of cookies. To find out more, read our Privacy Policy.