TPT September 2012

Dri l l ing, piercing, punching

T3CH CNC drilling unit makes light work of structural steel sections

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.

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 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

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. 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

Danobat – Spain Website: www.danobatgroup.com

Double mitre bandsawing machine

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: goll@meba-saw.de Website: www.meba-saw.de

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S eptember 2012