TPT March 2011

215 / 259

军黄铜、各种青铜合金、碲铜、铬铜合金以及铜硫合金。
Nissan Copper公司还计划生产用于ACR的铜镍合金盘形线圈、铜制毛细管，以及用于给排水和输气用PVC涂
塑铜管。
Nissan Copper Ltd – India
Fax: +91 22 2283 3889
Email:
Website:
- - - - - - - - - - - - - -
Integrated all-electric tube bender and cutter
UNISON has launched an all-electric tube bender with an integrated cutter, providing automated single-step
manufacturing of volume parts such as exhausts and tubing or piping shapes. The new machine is believed to
be an industry first, bringing the programmability and precision advantages of all-servo-control to the tubular
parts manufacturing market.
The machine’s all-electric, servomotor-controlled architecture gives comprehensive programmability through-
out the entire part fabrication cycle. The position and forces of the tube bending dies can be precisely con-
trolled, as can the movement profile and torque applied during the ‘nick and shear’ cutting cycle, delivering
accuracy and quality of shape fabrication and end finish.
Servomotor control also ensures that cutting positions are accurate and repeatable from batch to batch,
to within ±0.1mm (0.004”), as tubing remains under control of a high-resolution digital motion architecture
throughout the operation. These benefits are in addition to the low energy consumption and quiet operation
of all-electric motion control architectures, compared with traditional hydraulically actuated machinery.
After a bending operation, moving the tube to the shear tool position and making the cut takes typically 12-15
seconds. This compares with perhaps 60 seconds – plus the need for skilled labour – that would be required
for handling, loading, set-up and cut-off when the same task is performed at a separate station. In addition to
these throughput gains, Unison’s new integrated machine means that many manufacturers are also able to
produce multiple parts from each length of tubing.
“Integrated bend-and-shear answers the needs of manufacturers of volume parts such as automobile ex-
hausts and tube and pipe component shapes,” commented Unison’s Alan Pickering. “Compared with pro-
duction processes based on separate bend and cut stages, we believe the time and labour savings will start
delivering a payback on an investment after only a very short timescale – down to as little as a few weeks for
multi-shift manufacturing companies.”
The new machine, called the Breeze-Blade, is capable of bending and cutting tubing with outside diameters
of up to 76mm (3”). It comes with a multistack (multiple on-machine tooling) facility for software-controlled
changeover between parts batches, with the nick and shear tooling loaded into one of the tool positions.
Cut-off is performed in two steps. The bent tube shape is positioned automatically by the machine’s servo-
motor-driven carriage, and a circular clamp grips the tube directly adjacent to the cutting position. The first
tool strikes the tube to create a nick that penetrates around two thirds of the way through the tubing wall. The
shear blade then drives through the tubing, with control over aspects such as acceleration, speed, decelera-
tion and torque to suit the material and the tubing shape. This highly controlled action ensures a high quality
dimple-free cut with minimal burring. The clamp has been specially designed to ensure that cuts can be made
close to a bend, to within approximately 6cm (2.4”).
Универсальный станок с полностью электрическим приводом для гибки и резки
труб
Компания Unison выпустила гибочный станок с полностью электрическим приводом, укомплектованный
устройством для резки, который обеспечивает автоматизированное крупносерийное производство
таких изделий, как выхлопные трубы и трубные профили. Новый станок будет первым в этой области
промышленности, который имеет преимущества программирования и безошибочности работы
сервоприводных систем на рынке производства трубных изделий.