TPT November 2009

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Technology Update
64 November 2009 ›
ROLLFORM Equipment Pvt Ltd, India,
manufactures equipment for tube and pipe
production. The company has been a
pioneer in the production of NC flying cold
saws, and has supplied more than 25 cold
saw systems to various customers across
the world, including Europe.
Rollform has a technical tie-up with
Manfred Olk Technical Consultants,
Germany, for the design and development
of equipment. The software for
the operation of the cold saws
is also developed by a German
company.
The metal saw cut-off system can handle
all types of products/tubes – circular, square
and rectangular sections.
The synchronisation with mill speed
is achieved with the use of a brushless
AC servo motor control system for fast
response time.
The saw blade drive is mounted on the
carriage, and is executed as backlash-free
gearbox with incorporated saw blade shaft
and flange mounted speed
adjustable AC servo motor.
The saw blade drive is mounted on a
slide, guided on linear motion system.
Feeding of the saw blade is performed
by an AC servo motor via quick-release
safety coupling and ball screw spindle.
Feeding speed is NC controlled and related
to the progress of the cut.
The AC servo motor installed as saw
blade drive due to its very high speed can
be fitted with HSS-type or tungsten carbide
saw blades, depending on the size and
material to be cut.
Different saw blades require different
cutting speed, and the AC servo motor
provides a wide range of rpm.
The weight of the moving carriage is
kept to a minimum by the use of special
aluminium alloys.
The cold saw is provided with foolproof
protection systems, including adjustable
hydraulic shock absorbers and saw blade
breakage against power failure.
The new range of cold saws range from
10mm to 114.3mm OD and up to 6mm wall
thickness, at speeds up to 120m/min.
Rollform Equipment Pvt Ltd – India
Fax: +91 120 2542073
Email:
Website:
Flying cold saws
 NC flying cold saw from Rollform
REIKA, Germany, has announced an
increase in sales of high-speed cutting
centres for precise steel and stainless
steel tubes. The machines are used to
produce automotive parts as well as parts
for in-house technology and the furniture
industry.
The combination of chipless cutting and
chip forming cutting on the same machine
is the basis for flexibility and low tool
cost. Easy machine operation and short
change over times are guaranteed by
standard Siemens CNC control and quick
changing tool systems, and optimising
software for scrap reduction is available as
an additional benefit.
The high-accuracy parts produced on
the machines are suitable for the bending,
forming or swaging processes, which
can be directly interlinked to the cutting
centres.
Reika GmbH & Co KG – Germany
Fax: +49 2331 969036
Email:
Website:
 Reika manufactures high-speed
cutting centres
High-speed cutting