Page 30 - MetalForming-Apr-2018-issue

Link-Motion
and on providing them with top-notch equipment for improved productivity so that we can continue to meet the chal- lenges that come from increasing part complexity and material thicknesses.”
Meeting Deep-Draw Requirements
That brings us to Stanco’s decision to install the Seyi-America SEL2-1100 at its New Mexico factory, where extra- deep-draw-quality (EDDQ) cold-rolled- steel stampings requiring 6-in.-plus draws and up to 60-in. wide coils are produced through multiple progres- sions. Before adding the link-motion press in late 2016, Jerry Jr. says the parts were produced on a tandem line consisting of a 500-ton hydraulic press for drawing and a 600-ton mechanical press for finishing the last three stations of the part.
While link-motion technology does not possess the extreme capabilities of servo presses, which can be pro- grammed at different speeds in the
Lighting housings are shown being run on a progressive die.
slide stroke throughout the cycle, the link-motion technology “fills the gap between servo and traditional mechan- ical presses,” says Scott Braito, director of sales at Seyi-America.
“With link motion,” explains Braito, “the upstroke is accelerated while downstroke velocity is slowed by as
much as 40 percent, enabling improved drawing, forming and blanking oper- ations, with reduced springback and extended die life. Further, by not having to slow the press, Stanco can gain as many as 10 to 12 strokes/min. for increased productivity.”
While there is a cost differential “that
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28 MetalForming/April 2018
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