Page 17 - MetalForming January 2020

entire line function to its full potential. “Our coil feed integrates directly with our press control,” Landowski explains. “As press speed increases or decreases, the coil feed anticipates the location of the next feed pass, feeding material ahead of time as it senses the
change in speed.”
Komatsu also used FABTECH 2019
to tout its new H2FM servomechanical press series, in capacities of 400, 630 and 800 tons. The series features a high- rigidity frame with reported slide and bed deflection at 0.001 in./ft. left to right and front to back to enable high-accu- racy forming. A new high-torque, liq- uid-cooled servo motor offers minimal reduction of working energy at maxi- mum pendulum speed for greater pro- ductivity, according to Landowski, who notes that a proven capacitor system (adopted from capacitors used in Komat- su’s heavy-construction equipment) for electricity storage reduces energy usage. As a nod to PFA, a remote-monitoring system continually checks machine per- formance as well as interconnected peripherals. All data are stored and accessed through the internet.
By summer 2020, Komatsu plans to bring a 400-ton H2FM press to its Elk Grove, IL, showroom, paired with the new servo coil feed line both under power to provide demos for customers. www.komatsupress.com
Integrated Processing Boosts Productivity
In the earlier days of servo-driven presses, a decade or more back, their major selling point was flexibility, according to Jim Schulte, Arisa product manager at Nidec Press & Automation, who noted to MetalForming earlier this year that users could expect to combine a variety of applications in one servo- driven press. While certainly still true, stampers today are moving ahead, find- ing ways to further utilize the technol- ogy. An example: Servo transfer tech- nology, with the emphasis on synchronization and integration of processors, provides for productivity improvement. Here, as many as eight motors control different axes via a sin-
gle control.
In addition, according to Schulte,
“drivetrain improvements such as liq- uid-cooled motors and planetary gear- boxes allow for more-powerful motors in smaller packages, contributing to faster stops and quicker acceleration, enabling greater manipulation of parts profiles.”
In step with this evolution in tech- nology and in application optimization,
Nidec Arisa has rolled out the Arisa GS2 servo-press series (pictured on next page), offering integrated automa- tion such as described above in capac- ities from 3150 to 8000 kN.
Key to this series are precision kine- matics that enable quicker system response and higher production rates than possible in previous series ver- sions, according to Nidec Arisa officials. Features include eccentric wheels with
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