In manufacturing technology, the metal removal rate is an important indicator that can be used to measure the productivity of tools and machines. This indicator can be significantly improved by higher cutting and feed rates. Albrecht Präzision GmbH & Co. KG has developed an efficient solution for this called Albrecht ULTRA for diameters from 16mm to 25mm.
Albrecht has developed the high-performance chuck especially for volume machining and for machining materials that are difficult to machine. These mainly include components for the aircraft industry. Slim in design from the interference contour, the ULTRA series is available in two sizes for clamping ranges from 16mm to 25mm. The tools are clamped via a mechanical clamping gear and a clamping sleeve with a flat taper angle and special coating. This guarantees an exceptionally high clamping force, good damping properties and great process reliability for the application. The high balancing quality of G 2.5 to 20 000 revolutions per minute also protects the spindle bearing. If required, the chuck can be fine-balanced together with the tool. Holes with dimensions 6xM6 are provided for this purpose. This not only improves tool life, but also the surfaces during finishing as well as heavy machining.
With the Albrecht ULTRA high-performance chuck, a significant improvement in cutting and feed rates is evident in volume machining applications
Optionally, the user can obtain peripheral cooling via innovative, replaceable closing caps with adjusted bores. This ensures that the coolant is reliably supplied to the cutting edge even at higher speeds. Initial test results showed a significantly higher metal removal rate and tool life compared to conventional cooling. The caps are available with bore angles of 10°, 20° and 30°. The manufacturer caters to individual customer requirements.
In the case of extreme cutting forces, the Pin-Lock clamping sleeve with a radial locking pin in the Weldon clamping surface ensures that the milling cutter or drill cannot pull out or twist during machining. The following application example shows just how effective the new high-performance chuck is: On a machining center with an output of 100 kilowatts, a metal removal rate of 13.5 litres per minute was achieved on a component made of aluminium.
For further details contact Hi-Tech Machine Tools on TEL: 011 608 0088 or visit www.hitech.co.za
