News & Press

Find out what's going on at Jones & Shipman.

News & Press


Comprehensive display of high precision metal cutting and grinding technology from Hardinge Inc. at AMB

AMB 2018:  Stuttgart, Halle 5, Stand B80. The latest Kellenberger 100 platform concept cylindrical grinding machine features alongside two Hardinge…
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UK machine debut and Okamoto introduction are highlights for Jones & Shipman at MACH

Stand 875 – Hall H20 The UK debut of an entirely new Kellenberger universal grinding machine concept and a first…
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Comprehensive grinding solutions on offer from Hardinge Grinding Group at Grindtec

Kellenberger, the Swiss manufacturer of high precision grinding machines, is representing the interests of the international Hardinge Grinding Group at…
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Kellenberger 1000 – Swissness par excellence

State of the art technology, a cool design and top ease of use. For 20 years now, the firm Kellenberger…
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Ryetools upgrades with Kellenberger CNC

Rye-(1)Ryetools Limited, the Pickering, North Yorkshire based specialist in manufacturing plastic injection mould tools has recently taken delivery of a Kellenberger KEL-VISTA UR 175 / 1000 CNC cylindrical grinding machine. Purchased from Jones & Shipman in Leicester, this is Ryetools first CNC grinding machine, the company having previously relied on a range of Jones & Shipman manual machines, some of which date back to the founding days of Ryetools in 1988. However, increased demand from new and existing customers for fast cycling multi-impression mould tools for caps, closures and medical disposables have necessitated the need for guaranteed repeatability and precise interchangeable components on mould tools and mould tool spares. Against this scenario, Ryetools believes the Kellenberger investment will more than meet its demands, both immediate and in the foreseeable future. “The support we knew we would get from J&S was a vital part of our purchasing decision,” explains Ryetools managing director Darren Hugill. “The machine comes with impeccable credentials from Kellenberger but support on the ground from a UK based source was important to us.” KEL-VISTA grinding machines are purpose designed to be economical and innovative in both set-up and operation. They are designed for use in highly demanding tool and mould making environments where small and medium batch production is the norm and flexibility, precision and cost-effectiveness are essential. For example, a typical batch size manufactured by Ryetools would rarely exceed 75 components and one offs are often produced and modified for initial pilot moulds. Designed to be a cost-effective CNC alternative to hydraulically-controlled cylindrical grinding machines, the KEL-VISTA features the user-friendly Kellenberger KEL-EASY menu based CNC programming which greatly simplifies operator programming knowledge and – because of its ease of use – opens up the opportunities for wider use of the machine in the workshop. The machine control is a Series 21-TB supplied by Fanuc®. Key features include the ability to micro-adjust the tailstock in the range of +/-60µm, linear guides on the X-axis, a classical slide arrangement in Z-axis and the ability to accommodate a workpiece up to 100 kg in weight. As the designation implies, the distance between centres on the machine supplied to Ryetools is 1000 mm, as is the grinding length. The compact design features a coolant tray which is separated from the machine base, an integrated transport system and swiveling upper table. The swiveling workhead – being suitable for grinding between dead centres and for chucked work – is a further example of the machine’s progressive design. The thermally-optimised bearings guarantee the highest roundness and dimensional accuracy. Rye-(2)Ryetools decision to purchase the CNC grinder also reflects the company’s faith in grinding as its preferred finishing process, as Darren Hugill explains. “There is some debate in the mould and die sector on whether grinding or hard turning is a better process for finishing mould tool components. As our long standing commitment to Jones & Shipman machines demonstrates, we come down firmly in favour of CNC grinding, believing it produces a higher precision and trouble-free mould tool with superior surface finish and geometry, thus giving greater longevity. As we predominantly supply mould tools for components such as caps and closures that are used in a wide variety of packaging applications and also in the medical supply industries, these criteria are all important, particularly in tools where large volumes of impressions are required to produce hundreds of millions of parts for many years.” “Typically we are working to tight 4 micron tolerances and micron surface finishes on mould tools with high chrome workpiece materials at around 54/56 Rockwell hardness,” continues Darren. “The KEL-VISTA is equipped with measuring probes to ensure precision is maintained as well as features such as automatic wheel dressing and the ability to auto change from the internal to external cycle has also contributed greatly to improvements in our productivity and accuracy. It is proving to be a significant success and already we are seeing a return on our investment,” he concludes.