Leveraging the benefits of grinding technology

Based in Sutton-in-Ashfield, Nottinghamshire, R&D Leverage provides technical solutions to the European plastic packaging industry. The busy company serves a wide range of demanding sectors, including the food and beverage, medical, cosmetics, household and personal care markets.
The work of R&D Leverage UK, together with that of R&D Leverage USA, has enabled the business to develop into one of the foremost providers of quality tooling for the world’s packaging industries. At its UK plant, the company produces single-stage, injection stretch blow mould (ISBM) tooling for PET containers.

Certified to BS EN ISO 9001:2000, R&D Leverage UK is equipped with a range of innovative design, production and inspection aids that help ensure the delivery of on-time, on-budget moulds. For instance, the company’s machine tools are used to deliver the quality and accuracy required by customers. Indeed, R&D Leverage UK believes that purchasing the best available, most productive machines provides the levels of efficiency that enables it to compete in what is a fiercely competitive sector. This philosophy is reflected in the company’s most recently installed machine, a Studer S31 cylindrical grinder from Micronz, the second such model on site.
Having been delighted with the performance of the company’s first Studer S31, ever-increasing demand for the company’s moulds recently prompted the purchase of a second machine from the Swiss manufacturer.
R&D Leverage UK’s managing director Alan Tolley says: “From our high-tech Sutton-in-Ashfield plant we are a complete solution provider for a wide range of packaging sectors across Europe and beyond. We’ve established an excellent reputation for the reliability of our products and for our use of the best available technology. When investing in machine tools, our aim is to maintain high quality standards and, mindful of our constant quest for further efficiencies, to enable the manufacture of our moulds to be achieved faster than before.
“Before purchasing our first Studer S31 grinder we searched for a machine that would satisfy both our quality and our efficiency requirements,” he continues. “Having witnessed demonstrations of several suitable machines, we decided that the Studer S31 ticked all of our boxes. We specified the machine to match our exact needs and, given the good reputation of the Studer brand, we were pleasantly surprised that the supplied quote was very close to the cost of other, less capable grinders.
“Following its installation, the ease of use of our first Studer grinder meant that it was soon turning-out the promised volumes of ground components with excellent dimensional and surface-finish characteristics. Since this time, the grinder has maintained it impressive performance and has proven to be extremely reliable.
“When demand for ground parts recently increased further, our positive experience with the first S31 and the excellent service we received from Studer UK agent Micronz, meant that we remained loyal to the brand. Once again, we were able to work closely with Mark Maurice, the owner of Micronz to specify a Studer S31 grinder that matched our evolving needs. Now fully operational, our new S31 is today producing the expected high volumes of premium quality ground components and has removed the potential for bottlenecks in our grinding department.”

The compact Studer S31 CNC universal cylindrical grinding machine, as purchased by R&D Leverage, is designed for the grinding of medium-sized workpieces with external and internal grinding in a single clamping. S31 grinders are able to grind workpieces in 1-off, as well as small and large batch production runs. Furthermore, the S31 can be adapted precisely to the demands placed on it; flexibility that is said to guarantee an optimal price-to-performance ratio.
Offering the ability to machine workpieces with a maximum weight of 80/120 kg, Studer’s S31 has distances between centres of 650/1000 mm, a centre height of 175 mm and
a grinding wheel diameter of
500 mm.
The machine’s solid Granitan base forms the bed of a cylindrical grinding machine that is equipped with quality components. In addition, the material structure developed by Studer, which has proven its quality over many years, is produced at the company’s own plant in Thun, Switzerland. The good cushioning behaviour of the S31’s machine base ensures surface quality of the ground workpieces and an increased service life of grinding wheels, further reducing downtime.
Studer’s S31 has a full enclosure that allows the use of emulsions or oils as cooling lubricants, while two large sliding doors provide operators with easy access. For automated, 24-hour running, handling devices can be connected via the machine’s defined loader interface.
The S31’s longitudinal and cross slides, as well as the V and flat guideways, have a non-abrasive Granitan S200 coating and are moulded directly into the machine base. These guideways offer precision throughout the machine’s entire speed range, along with with high load capacity.
A swivelling wheel-head enables the external, internal and form grinding of workpieces in a single clamping. Furthermore, the wheel-head is equipped with a water-cooled, maintenance-free motor-spindle mounted on roller bearings, featuring infinitely variable speed control. External grinding wheels with a diameter of 500 mm and a width of 63 mm are fitted to the shaft ends. High-frequency spindles with an external diameter of 120 mm are used for internal grinding.
The S31 also features a frequency-controlled, motor-driven grinding spindle for external and internal operations, while the machine’s C-axis work-head enables form and thread grinding.
Studer’s grinding software, with its ‘pictogramming’, allows less experienced users to quickly optimise the full potential of the S31. StuderGrind software is also available, enabling programming of special applications, such as form and thread grinding.
For further information www.micronz.co.uk

Students thrust magnesium into the spotlight

Students in Birmingham are being challenged to showcase the potential uses of magnesium within the aerospace sector as part of a competition being staged by Birmingham City University and the world’s largest producer of magnesium components, Meridian.

At 1.8 g/cm³, magnesium is the lightest of all structural materials, however, misconceptions surrounding the element’s properties have seen a historical aversion to designing products with this material when compared with less sustainable and heavier metals.
The competition being set by the partners aims to alter these perceptions with an interdisciplinary art installation designed by students that will be showcased to experts at the university, Meridian and the International Magnesium Association (MIA), which is also supporting the project. If the winning prototype inspires further investment, it is hoped a full-scale version will be crafted from magnesium and exhibited in a partner venue.
For further information www.bcu.ac.uk

Rotary tables support larger cuts

The Detron GFA series of five-axis rotary tables is now available in the UK from YMT. Critical faces on the rotary tables are ground rather than just turned for indexing accuracy and concentricity.

Users can also increase productivity with larger cuts and benefit from smooth braking without deformation of the table surface. This latter attribute is supported by Detron’s patented dual-piston clamping technology and a fully enclosed brake-drum ring operating at high pressure.
Integrated radial and axial bearings, where the spindle and bearing is one unit, add to the rigidity of the rotary table. Additionally, the dual lead worm uses a large tooth depth resulting in a contact surface 33% greater than conventional worms. To ensure long service life, reliability and thermal stability, the worm is positioned at the bottom, so that it is totally immersed in oil. These features help ensure the table is suitable for heavy-duty five-axis machining.
The motors on the Detron GFA series are control-specific, so YMT tests the installation in-house before delivering it to the customer. All Detron GFA series rotary tables have ports in the table so that they are automation-ready, giving a clear upgrade path for end users.
For further information www.ymtltd.co.uk

Clamping devices of the future

A choice of effective clamping devices for tool and workpiece avoids expensive changeover times and helps to utilise the machine tool’s potential more effectively. With this in mind, the Precision Tool Association in the VDMA (German Engineering Federation), under the aegis of the METAV exhibition last month, hosted the 3rd Clamping Technology Forum.

Intelligent holding and clamping systems are becoming progressively more important in manufacturing operations, particularly as companies are increasingly having to deal with thin-walled and very small workpieces, as well as lightweight components. Here, intelligent clamping systems offer a huge potential for optimisation, although they also have “advantages when machining medium and small batch sizes with automated parts handling, and wherever comprehensive process monitoring is required”, says Henrik Schunk, managing partner of workholding specialist Schunk GmbH.
At Metav, Schunk gave a presentation on the importance of the toolholder in the production process. The company introduced an app with which a user can receive operating states of angle heads as raw data on his mobile terminal, enabling him or her to take countermeasures against production errors conveniently over a smartphone.
Angle heads are “very cost-efficient and flexible components designed to significantly expand the functionality of machine tools. Nowadays they are essential in an innovative metalcutting strategy,” explains Konrad Keck from Benz GmbH. Advantages and possible applications of magnetic and vacuum-based clamping techniques were also showcased at Metav.
Overall, experts presented numerous solutions, which thanks to the optimised deployment of clamping devices, can render the production process more efficient and cost effective.
For further information www.metav.com

Flexible automation for the masses

From its biggest ever stand at MACH 2018, Thame Workholding (Hall 6, Stand 170) will display a number of products receiving their UK exhibition premiere. For instance, RoboTrex is the first Lang automation equipment based on the small QuickPoint 52 system.

Suitable for retrofitting to the front or side of a machine tool, the RoboTrex can work with individual components up to 12 kg. Customers can choose from up to four specially designed workpiece trolleys that serve as vice storage systems. Furthermore, two new RoboTrex vices, with a jaw width of 46 and 77 mm, can be mounted vertically for optimal use of space when being picked-up by the robot.
Another MACH debutant on the Thame stand will be the Inoflex VL range. This weight-reduced series of self-centring four-jaw chucks is suitable for vertical turning centres, offering part-clamping capacity from 420 to 1200 mm. Compensating features permit the clamping of round, cubic and geometrically irregular workpieces when milling or turning.
While conventional chucks operate with all jaws moving in the same direction, either towards or away from the centre of the chuck, the Inoflex chuck operates with the jaws moving together or apart on two parallel axes. In addition, weight-reduction characteristics improve clamping forces at higher machining speeds while simultaneously reducing the stress and forces placed on the spindle when machining large workpieces.
Thame will also introduce its latest series of multi-face fixture systems for five-axis machining. This three-faced fixture facilitates the clamping of three individual components on a single device. According to the company, the fixture provides greater clearance and access to five-axis parts, especially when compared with standard four-face tombstone systems.
For further information www.thame-eng.com