TPT September 2012

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Dri l l ing, piercing, punching
September 2012 139
T3CH CNC drilling unit makes
light work of structural steel
sections
THE compact design of Danobat’s
T3CH CNC drilling unit imparts rigidity,
with a direct and positive influence on
cutting tool life.
In addition to drilling with the
three independent spindles, other
machining operations such as external
countersinking, external counterboring,
threading, centre pointing and marking
are also possible. Each of the three
drilling heads – two horizontal and one
vertical – is driven by a brushless motor
under CNC control, the tools allocated
to each spindle being exchanged via
three fully automatic toolchangers.
Two models are available – T3CH
104 and T3CH 126 – and both have a
9kW/13kW main drive motor providing
tool rotation speeds up to 2,500 rev/min.
These models are capable of drilling
diameters from 6mm to 40mm diameter
at a maximum feed rate of 12mm/sec.
The T3CH CNC drilling unit can be
linked to a Danobat CNC 3D plasma
cutting system capable of cutting profiles
and round and square tubes. The RTCP
(Rotation Tool Center Point) function
of this innovative system ensures
that the plasma cutting tip follows the
programmed profile regardless of the
position and orientation of the plasma.
The T3CHCNC drilling unit can also be
linked with a Danobat CNC saw, either
in-line or as two parallel processes,
to provide an integrated sawing and
drilling solution for large structural steel
sections. The CPI horizontal bandsaw
can cut mitres from -45°/+60° using high
speed steel or carbide tipped blades,
thanks to the innovative cutting software
that allows changes of the downfeed and
cutting speed to be made automatically.
Depending on the section that is cutting
each moment, the running-in process
is also automatic. A choice of loading/
unloading systems contributes to a fully
automated sawing and drilling line. A
feeding gripper on the in-feed rollerway
and a measuring stop on the out-feed
rollerway, both functioning under NC
control, ensure accurate positioning of
the steel section prior to both machining
operations.
The optional DanoSort system
permits the extraction of parts up to
2,200mm long, with automatic extraction
of ‘last scrap’ pieces up to 30mm long.
This particular load/unload system
can accommodate various section
types including double T (horizontal/
vertical, web/flange) profiles, U-profiles,
T-profiles and L-profiles as well as
square tube.
Danobat – Spain
Website:
Double mitre bandsawing
machine
MACHINES from product line MEBAeco
are based on a continuously advanced
“construction kit system” out of which
innumerable models can be configured,
enabling the customer to specify his
machine, depending on his needs and
giving individuality at an affordable price.
Everything is possible: from simple semi-
automatic machines for straight line cuts
to patented double mitre bandsawing
automatic machines. Cutting range is
at maximum 410 x 700mm according to
the type of machine.
Features like the trend-setting electric
saw feed, the stepless frequency
controlled saw drive as well as the latest
linear feed technique for all applicable
tracks are the answers to continuously
higher need of flexibility and faster
operation in the steel industry at an
outstanding accuracy.
The version MEBAeco 410 DGA
offers the possibility of a flexible infeed
gripper, which is expandable to nearly
all lengths. Like this, lengths of cycles
can be reduced substantially, especially
when sawing taller lengths. The infeed
gripper is built on a rigid stock roller,
which can be driven as an option.
Due to the unique patented MEBA
mitre system the hydraulic workpiece
clamping always stays squarely to the
material and close to the sawing blade.
The material vice adjusts according to
desired mitre automatically in material
direction.
The saw frame is operating through
anti vibration, no tolerance linear
guidance.
Speed of the stepless frequency
controlled AC-drive can be chosen
between 15 and 150m/min.
MEBA double mitre bandsawing
machines allow execution of various
mitre and length combinations.
Visualised control surfaces enable a
continuously uncomplicated input and
monitoring of the sawing program.
As a final consequence, these
machines can even be connected with
material bearing feeding and rejecting
logistics for a fully automated sawing
process. In connection with for example
bearing drilling systems, sandblast
systems, pantograph milling machines
or welding robots almost any automatic
line operation of steel constructions can
be realised.
The machines are easily accessible
to all machine parts, for changing the
saw blades or for cleaning. All machines
of the MEBAeco line are outstandingly
easy to handle, so that the operator can
concentrate on his prime work.
MEBA Metall-Bandsagemaschinen
GmbH – Germany
Email:
Website: