Instead, it’s about measuring the time between retrieving blanks to delivering formed parts to the next operation. When analyzing the time, a fabricator
should pay special attention to the part run-in, or tryout, time. This alone could
have implications upstream, including in laser cutting and punching. In a quest
for maximum material utilization, a programmer nests as many parts as possible, facing them every which way on a sheet. He also may use remnants from a
previous batch. This strategy can work in many situations. But when bend angle
tolerances are critical, it can present hurdles and prolong part run-in time significantly.
Nesting strategically, with identical parts cut with the same grain direction,
or keeping critical parts in the same sheet or batch of sheets, can improve matters. So can investing in automatic bend angle measurement (which adds only a
small fraction of a second per bend) and correction. The investment could also
give programmers more flexibility when nesting parts.
Which methods and technologies should a fabricator consider to boost bending throughput? This depends on the part mix, volume, and the nature of its
bending operation. The key again is to measure what actually takes place at the
press brake. Fabricators then can choose the best options that fit their operation (see Figure 4).
Whatever option fabricators do choose, their goal should be the same: An operator should spend most of his time doing value-added activities; that is, actually making quality parts that don’t sit as excess WIP, but flow quickly to the next
Vincent Iozzo is TruBend product manager, TRUMPF Inc., 860-255-6000,
www.us.trumpf.com. Images courtesy of TRUMPF Inc.
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Which methods and technologies should
a fabricator consider to boost bending
throughput? This depends on the
part mix, volume, and the nature of
its bending operation.