Zero-point clamping system unveiled

Introduced at last month’s MACH 2018 by 1st MTA was a new zero-point clamping system from V-Tech (pictured). For clamping workpieces on CNC machining centres, this pneumatic quick-change system features 24 kN retraction of the clamping pin in each receiver, and a positioning accuracy of better than 5 µm.

Mechanical vices, clamping chucks and bars, and special workholding fixtures, can be accommodated in the receivers, while positioning slots allow precise 90° indexing. The self-clamping mechanism, which uses high-power springs to secure the workpiece and fixture, ensures that the force is still applied after the air has been disconnected. Pneumatic power is only required again for release. Clamping bases are available to hold one, two, four or six receivers, which are 135 mm in diameter but only 41 mm high, so little Z-axis travel is lost.
With regard to rotary tables, on show was Kitagawa’s latest TT150 tilting-type compound table with 150 mm faceplate. The TT150 is designed to be interfaced directly with a machining centre control or operated via a MAC mini controller. Also featured was the heavy-duty GT series models that deliver clamping torques up to 2800 Nm.
Elsewhere on the stand, 1st MTA demonstrated a Chick Indexer SubSystem (ISS), showing how more components could be presented to a machining centre spindle by adding a fourth axis. Another Chick product on show was the latest lightweight version of its One-Lok clamping system, which is pitched as a superior alternative to the conventional wind-up vice.
To further support its workholding offer, 1st MTA presented permanent electromagnetic clamping systems and materials handling products from Tecnomagnete, while MillTec Grip magnetic workholding systems were displayed for five-axis and five-sided metal-cutting applications.
For further information www.1mta.com

Workholding in the spotlight

Giving manufacturers complete control and increased speed over their machining operations was high on the agenda when Hyfore headed to MACH 2018. The workholding specialist displayed the latest technology from eight global principals, including advancements in vices, clamp jaws, high-speed tool holders and roller drive rotary tables.

Hyfore also strengthened its relationship as the sole UK distributor of Midaco by showcasing a small pallet receiver, which demonstrated what the pallet changers could look like on a machining table.
“Industrial companies today – at all levels of the supply chain – are looking to get the most out of their machines, whether that is speed, accuracy or capacity,” explains Gary Dickenson, managing director of Hyfore. “One of the ways they can do that is improving the workholding and making sure the part is held in a way that offers the optimum manufacturing efficiency and improves the life of the machine tool.
“This is why MACH was such an important show for us and one where we demonstrated possible solutions and had experts on hand who could talk though bespoke fixtures and some of the other technologies that may help,” he adds. “We are the only UK supplier of products from major brands such as Spreitzer, Matrix, Acrow, Hardinge, Buck, Midaco, Sankyo, UCAM and Kosmek. There was plenty to talk about at the show.”
For further information www.hyfore.com

JJ Churchill halves machining operations

Aerospace engineering firm JJ Churchill has reduced its tooling costs by 5% with a 50% reduction in the number of machining operations on a specific critical part. This has been achieved with Blue Photon technology, which is marketed in the UK and Europe by NCMT.

The technology is being applied to an aerofoil blade component made from titanium aluminide, an extremely difficult material to fixture and machine. Blue Photon fixes the component to the tool with an adhesive, which cures under UV light, making it strong enough for rigorous machining techniques. The process is a replacement for encapsulation, providing reduced fixture complexity. Operation reduction is achieved by fixing on to a single face of the component, as opposed to potentially many faces.
Locating on a single face provides access to other faces, enabling several complex features to be machined at the same time. This capability delivers greater precision during machining, and ultimately reduces the amount of metal wasted/scrapped.
Once the blade root and tip have been machined (held using Blue Photon technology), the workpiece is transferred to a Starrag five-axis machining centre, in this case a 28 kW/18,000 rpm LX051. The workpiece is held in specifically-developed fixtures for the complete machining of the aerofoil from forged blanks that are, at most, 5 mm oversize.
The impact on JJ Churchill’s overall production is to increase capacity, which is essential as the company continues its growth trajectory, while also benefitting the environment. Using Blue Photon reduces the electricity required for the process.
For further information www.jjchurchill.com

Schunk Intec celebrates 20th anniversary

MACH 2018 was a huge success for Schunk Intec with the company announcing that lead generation was significantly higher than the 2016 event. From a stand more than 20% larger than in 2016, the gripping systems and clamping technology specialist received a high level of interest in a complete range of product lines.

Schunk used MACH as an opportunity to hold a special ceremony on its stand to celebrate the company’s 20th anniversary in the UK. At the show, established product lines won plaudits and generated a high level of enquiries, however, it was new technology like the Vero-S Aviation stationary clamping system that really sparked the interest of MACH visitors.
Making its MACH debut, the Vero-S Aviation is a pneumatically actuated, zero-point clamping system developed for the direct clamping of structural components in the aerospace industry.
Also making its MACH debut was the new Co-act (collaborative actuator). As part of Schunk’s gripping system programme for safe human-robot collaboration – said to be the world’s first intelligent gripping module of its type – the Co-act was certainly a focal point at the show. The system permits adjustments to the gripping process to be made in real-time using diverse sensor systems.
Further stand-out solutions on the stand were the Vero-S quick-change pallet system, the Tendo hydraulic tool holder, the PGN-plus gripper, Magnos magnetic clamping technology, Rota-S manual lathe chuck and more.
For further information www.gb.schunk.com

Queen’s Award

Machine-tool supplier NCMT has won a Queen’s Award for Enterprise in International Trade 2018, for its rapid growth in exports to contract machinists supplying international aero engine- and land-turbine manufacturers.

The award is based on VIPER grinding, which was developed in collaboration with Rolls-Royce and Japanese machining centre manufacturer Makino, which is represented by NCTM in the UK and Ireland. NCMT’s steeply increasing overseas sales resulted in the company growing its export business from £1.7m in 2013/14 to £7.7m and £10.7m (50% of machine-tool turnover) in subsequent years, to £14m in the current financial year.
For further information www.ncmt.co.uk