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Laser cutting: The headwater of metal manufacturing
- By Tim Heston
- December 10, 2013
Then there’s forming, and then welding. If you think about it, the fastest laser in the world looks great, but if overall manufacturing time doesn’t change, the operation doesn’t produce more parts in less time. Jobs that require just laser cutting can be offloaded and shipped in record time. But most parts at contract fabricators require forming and welding—two classic bottlenecks in metal fabrication.
So how does a shop free these constraints?
Yesterday, Alex Robertson, business development manager at Fisher-Barton South Carolina Inc., gave me a shop tour that opened my eyes to new possibilities. Fisher-Barton’s South Carolina plant began as a contract stamper, one with in-house tooling department. Then over the past five years the company has brought in more fabrication and welding: specifically, an automated laser cutting cell, press brakes, and robotic welding.
The automated system churns out blanks for the entire 100,000-square-foot facility. The laser feeds blanks to the press brake as well as all the hand-fed presses. When volumes are high enough, the company may develop a tool for a press. And volumes don’t necessarily need to be that high—especially if a tool can reduce forming time dramatically.
That was the case for one part that required nine bends. The laser cut the blanks in a flash, but the press brake operator struggled to keep up. So the tooling department stepped up and developed a die that formed the complex component in two hits. That same tooling department develops welding fixtures for the company’s robotic welding systems.
This arrangement isn’t unique. Companies like GH Metal Solutions in Fort Payne, Ala., develop tooling for its presses as well as workpiece fixtures for robotic welding. So does Tie Down Engineering and its job shop division, Industrial Laser Solutions, in Atlanta, where several solid-state laser systems effectively feed blanks and cut tube to a large, seven-plant campus totaling a half-million square feet.
Every plant has its own customer and technology mix, but there’s a noticeable trend: Laser cutting machines have become so capable that they’re feeding larger and larger facilities, and this includes both low-volume forming on press brakes, as well as mid-volume forming on stamping presses.
Coil-fed prog-dies still dominate much of stamping, of course. And mechanical blanking presses are probably here to stay for the large-workpiece, high-volume jobs in automotive and the like. But for the mid- to low-volume sheet metal jobs—small potatoes if taken individually, but which collectively make up most of the sheet metal manufacturing in this country—the laser is becoming an almost ubiquitous headwater of sheet metal manufacturing.
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The Fabricator is North America's leading magazine for the metal forming and fabricating industry. The magazine delivers the news, technical articles, and case histories that enable fabricators to do their jobs more efficiently. The Fabricator has served the industry since 1970.
start your free subscriptionAbout the Author
Tim Heston
2135 Point Blvd
Elgin, IL 60123
815-381-1314
Tim Heston, The Fabricator's senior editor, has covered the metal fabrication industry since 1998, starting his career at the American Welding Society's Welding Journal. Since then he has covered the full range of metal fabrication processes, from stamping, bending, and cutting to grinding and polishing. He joined The Fabricator's staff in October 2007.
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