TPT January 2008

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January 2008 44 ›
Technology Update
This can result in a considerable time saving
(varying by vehicle type) over conventional
methods.
The ratchet drive of the
product features automatic
advance of the cutting
wheel with every turn,
making the cutter easy to
use and ensuring optimum
results, even in the most
inaccessible situations.
The special alloy of the
cutting wheel gives a long tool-edge life and
ensures fast work, while the body of the
pipe cutter is made from rugged, easy-care
die-cast aluminium.
The Dako number 224 ratchet pipe cutter
is designed for parting plain steel, stainless
steel, copper and aluminium tubes, and is
available in two sizes: one for pipe of 16mm
to 35mm diameter, and one for 35mm to
66mm diameter, with wall thicknesses from
1.5mm.
Gedore Group – Germany
Fax: +49 2191 596911
Email:
Website:
Pipe benders for demanding
shipbuilding application
Eagle Precision Technologies Ltd,
Canada, has designed, manufactured and
delivered a CNC pipe bending machine
for a shipbuilding application in Asia.
The application required the bending of
numerous different part shapes on small
runs, including the production of a part
with a 1.5D bend (109mm bend centreline
radius) using 73mm OD x 4mm wall
stainless steel pipe.
› Eagle’s EPT-150 CNC pipe bender
The challenge was to bend this pipe
while meeting the customers exacting
requirements for ovality of 8 per cent or less,
and wall thinning of 12 per cent or less. This
had to be achieved without producing any
wrinkles on the inside of the bend, and with
minimal scrap.
Eagle designed a custom EPT-100 XPH
(100mm capacity) CNC hydraulic pipe
bender featuring a high torque, robust bend
head to handle the high torque requirement
of the application. For loading the heavy
wall pipe, Eagle reduced the load height of
the machine for easier operator handling.
A programmable follower was supplied to
provide boost assistance to maintain the
Collaring in the automotive industry
T-Drill, Finland, a manufacturer of tube processing and chipless tube cutting machines,
has reported increased deliveries of its S-54 collaring machines for automotive engine
cooling tube, fuel rail and exhaust circulation applications.
The T-Drill collaring method provides reliable and easy T-joining of tubes. This is of
great importance in automotive applications, where every vehicle is subject to severe
vibrations that can create leaks and other
problems with traditionally made T-joining
using saddle-adapters or drilled holes.
Due to the increased lapping length between
extruded collar and branch tube, the lapping
joint length is increased by three times. With
capillary action, this provides a reliable brazed
joint.
T-Drill’s extruded outlets are formed only
outside the main run tube. This eliminates
flow restrictions that are common with other
forming operations.
T-Drill Oy – Finland
Fax: +358 64753 300
Email :
Website:
T-Drill Industries Inc – USA
Fax: +1 770 925 3912
Email :
Website: › T-Drill’s S-54 collaring machines
Ratchet pipe cutter for automobile retro-fitting
The number 224 ratchet pipe cutter from
Dako, part of the Gedore group, Germany, is
suitable for retro-fitting catalytic converters
and soot particle filters, and for replacing
parts of vehicle exhaust systems.
Depending on the surrounding area, the
exhaust simply needs to be pulled down
far enough to allow room for the cutter
head to rotate around the pipe. No sawing
or grinding is required, eliminating the
risk of injury to the user and avoiding any
possibility of the underside of the vehicle
being damaged by sawing or grinding. The
cutting produces no swarf, so that no chips
or swarf can enter the exhaust system.
The cut is clean, so new sections
of exhaust can be fitted
immediately after the pipe
has been parted off.
› The Dako no.224 ratchet pipe cutter
› The ratchet tool cuts pipe without sawing or
grinding