TPT November 2007

C utting, S awing & P rofiling T echnology

Three independent manipulators allow mandrel feeding from both loading systems. Two mandrels are used for the tube machining, one mobile with four sliding and self-centring jaws, and one fixed with four idle rolls. A tempered and rectified precision helical toothed rack activates the advancement, operated by brushless motor and precision reducer with slack recovery system. An extraction system which removes smoke and cutting dust is accommodated inside the mobile mandrel. Finished pieces are handled according to length, dimension, quantity and type of machining by an intelligent discharge system that enhances the machine productivity and reduces the dead time of the finished part stocking. FL 250 3D is equipped with a 3D laser head that can orientate the beam in any direction within a semi-sphere. Torque direct-drive motors operate the head movements, without any mechanical transmission, while a capacitive sensor controls the exact distance between the nozzle and the cut surface. System pressurisation and integrated cooling ensures working precision. Tube Tech Machinery Srl – Italy Fax : +39 030 7256333 Email : info@tubetechmachinery.com Website : www.tubetechmachinery.com

Highly advanced 3D laser tube cutting

Tube Tech Machinery Srl, Italy, produces the FL 250 3D for laser tube cutting of diameters ranging from 20mm to 254mm. It is equipped with numerical control CNC 840D, Siemens drives and motors, and Heidenhain optical lines and transducers. According to the company, particular care was taken in choosing components for maximum reliability, including guides, bearings, cross and pre-charged roll mandrels, circulating screws and precision reducers.

The FL 250 3D is equipped with a double tube loading system: one from bundle and one from chain. The first is composed of an automatically rewinding belt lifting structure and singliser with double motoring and automatic adjustment to the tube diameter. The second, which is also suitable for loading open section profiles, is composed of chains with V supports. The chain feed speed automatically adjusts to the tube diameter and weight.

fi Tube Tech Machinery’s FL 250 3D can accommodate tubes up to 254mm in diameter

Automatic cut-off saw with small sawblade

Pressta-Eisele Germany, manufactures equipment and solutions for the machining of aluminium, copper and brass profiles with the shortest cycle times and smallest tolerance. The company produces automatic saws and sawing centres, together with punching machines, milling machines and drilling centres. The company has launched a new automatic saw, branded model Profilma 250. The machine can use Ø 250mm tungsten carbide blades with a thickness of 1.6mm (0.0635"), or Ø 200mm blades with a thickness of 1.2mm (0,0476"). The very small sawblade is the NE Plus Ultra, which offers a cycle time of 3.5 seconds (depending on profile). GmbH,

material per cut. For instance, a charge of 1 million cuts, which is standard in the automotive industry, saves about 2,500m of aluminium material. There is a material feed of up to 1,000mm by ball screw spindle and servomotor, while an oscillating unit can be used for cuts up to 3,000mm. The machine is powered by a motor (3KW, 400V, 50Hz); infinitely adjustable RPM from 1,500-3,750 and high precision guides are further basics to achieve a cutting accuracy of ±0.06mm. The saw blade moves above the table from back to the front which grants a cutting range of 90 x 200mm. In addition, there is an excellent flow so that the swarf can be extracted easily. Vertical and horizontal clamps on the infeed and outfeed are fitted as standard with this model.

Operation is undertaken by SPS control Siemens S7-300 with a 5.7" touch-panel. › The model Profilma 250 automatic saw, from Pressta Eisele

Pressta Eisele GmbH – Germany Fax : +49 6542 9362 99 Email : hvogel@pressta-eisele.de Website : www.pressta-eisele.de

In comparison with common blades, a saving can be made of up to 2.5mm

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N ovember /D ecember 2007