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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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J&S Ultramat grinder cuts lead times at O.L.D Engineering

Investment in a new Jones & Shipman Ultramat EASY external cylindrical grinding machine by Leicestershire specialist engineers O.L.D Engineering has given the company not only additional capacity but also improved productivity with considerable reduced set up times.

The Jones & Shipman Ultramat EASY features touchscreen programming

The Jones & Shipman Ultramat EASY features touchscreen programming

O.L.D is a Tier 1 supplier of both components and sub-assemblies for large diesel engines – typically found in construction plant, locomotives, marine applications and large vehicles. Batches sizes are low – approaching 100 is rare – but the need for flexibility in finish grinding any one of over 400 different components highlighted the attraction of the Ultramat’s EASY grinding and dressing programming software. The O.L.D grinding section in Hinckley has, until the arrival of the Ultramat, comprised 3 CNC grinders and supporting manual machines. By their nature these were not quick set up machines and as Continuous Improvement Manager Chris Topp explains, increasingly short lead times and flexible call off’s by customers required a faster response. “Additional capacity was the initial driver for considering a new machine but when the capability of the software became evident, we soon realised the additional benefits in terms of very short set up times,” he explains.
Finish grinding the bearing surfaces on a diesel engine shaft

Finish grinding the bearing surfaces on a diesel engine shaft

“The machine’s highly experienced CNC operator also embraced the technology and benefits and he now looks after two machines in the cell. Not untypically, for one customer alone we could be producing up to 100 different format components in highly variable batch sizes a week which illustrates the importance of eliminating non productive time between machining.” Having loaded in the 400 plus grinding programmes, O.L.D has achieved simple and rapid set up’s for automatic cycles but should it be necessary, there is an easily convertible manual override. O.L.D has specified the Ultramat EASY with a 1 metre grinding length capacity to cover all of their likely shaft length options with the machine featuring a one piece ‘Tee Bed’ design with a fully supported table combined with technical innovation and the ability to offer high geometric accuracy. Incorporating a touchscreen used to access the fast-to-set J&S ‘EASY’ software, the control panels have membrane-type touch keys and electronic handwheels while the machine also has automatic dressing and grinding cycles which means it can be quickly set, then left unmanned.
Manual gauging during the grinding cycle

Manual gauging during the grinding cycle

As standard it is equipped with Heidenhain® ‘Absolute’ Nano linear scales and Fanuc® Digital AC servo motors and control. There is a high proportion of shaft work with heat treated bearing surfaces ground to ± 4 micron without in process diameter gauging required. Typically the grinding of a shaft can involve 5 different diameters, shoulders and under cuts in a single cycle. The (optional) Marposs wheel head mounted shoulder location touch trigger probe is vital to ensure component positioning is precise in the Z axis, in relation to the master datum of each component type. Batches of components are gauged manually during the grinding cycle but after completion are subjected to individual high accuracy inspection on a Tesa Scan 52 which offers colour coded classification of the measurement values and enables the analysis of the results at a glance.
This probe option ensures the workpiece is correctly positioned in the fixture prior to finish grinding

This probe option ensures the workpiece is correctly positioned in the fixture prior to finish grinding

Finally, the dressing cycles performed by the software include in Cycle/out of Cycle, dressing with full compensation including dress on demand and easy form dressing. There are straight, facing, angle and ISO wheel dressing macros. “Since its installation in June 2015 the Ultramat has rapidly integrated into an invaluable part of our operations and has given us an immediate payback in reduced downtime alone,” concludes Chris Topp. “We have the capacity now to offer a sub contract grinding service with the combination of our operator skills complemented by the EASY software creating a competitive combination,” he adds.
Setting up prior to the grinding cycle

Setting up prior to the grinding cycle

Jones & Shipman Hardinge is a Hardinge Grinding Group company. For UK enquiries please contact Jones & Shipman Hardinge on +44 (0) 116 201 3000 or e-mail sales@jonesshipman.com