Logo: Halifax Numerical Controls - Specialist Machine Tool Engineers
Machine Tool Design
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8th April 2009
Exciting new product - exciting new partnership!
10th September 2008
Automated cell delivered for Charpy test pieces
10 Sept 2008
Weir Minerals again turn to HNC!
19th May 2008
HNC trade-in Miss Moneypenny
19th May 2008
HNC hits million pound six!
25 April 2008
Whitgift School count on Heidenhain


08 April 2009
Exciting new product - exciting new partnership!

Halifax Numerical Controls Ltd (HNC) of Halifax, West Yorkshire has become something of a leading light in specialist machine tool design and manufacturing in recent years, with many famous “names” utilising their skills.

Carl, founder and proprietor of Huddersfield based Rollertech who supply the rubber roller industry with machinery and spares on a global basis had an idea for a new type of grinding machine and needed someone who could translate these ideas into a workable design and build a machine. Contact was made with HNC, culminating in a signed agreement.

HNC would carry out the design and build a prototype with the assistance of Rollertech then jointly develop the new machine in line with Carl Slingsby’s vision.

Rubber roll grinders have been around for years, usually in the form of a universal grinder with the table traversing in the “X” axis, because that’s the way it’s always been. One of the problems when grinding shafts such as 3000mm is that the machine has to more than twice that length to accommodate the table traverse, taking up valuable floor space. This in turn causes further problems with the inertia of moving a 5 tonne component back and forth.

Working within a tight, but realistic time frame, HNC fully developed a machine designated the Rollertech RT 3000. The heavy duty, totally enclosed machine is fully electronic in operation and capable of grinding rubber rollers up to 3 metres in length with a maximum component weight of 5 tonnes, whilst maintaining an end to end accuracy of 20 microns. The machine is compact with the component rotating during the grinding process but remaining stationary in the longitudinal axis as the wheelhead now traverses in the “X” axis in addition to the “Z” as per conventional machines.

Rollertech rt300

A multitude of programmes has been developed and incorporated into the control including parallel, convex and concave grinding along with grooving cycles giving  herringbone, chevron and diamond patterns to name but a few. It has further been developed to enable customers to easily prepare programmes for their own specialist shapes and patterns as required.    

Carl and Mike are rightfully pleased with their endeavours, ready to take their machine to market – but best of all, it’s about half the price of conventional CNC roll grinders, taking up half the space but offering a massive capacity – and is simple to use!


More details >>> PDF


Photo: Charpy Test Peice10th September 2008
Automated cell delivered for Charpy test pieces

An automated cell for the manufacture of Charpy impact test pieces for steel producer Corus, part of Tata Steel, has been delivered by Agemaspark, Doncaster, aided by HNC of Halifax, and featuring Hardinge machine tools.

At Corus’ Scunthorpe steelworks, a test piece is taken from each production batch with results forwarded to customers; some 450 test pieces need to be produced each day. Corus’s machine shop within its Test House could not cope and a call was put in to Hardinge, which in turn called its agent, Agemaspark, Doncaster, which in turn called upon Halifax Numerical Controls for automation advice.

The requirement was for a system to make a set of three test pieces measuring either 5, 7.5 or 10 mm wide by 10 mm high and 55 mm long with a centrally machined vee 2 mm deep to an overall maximum tolerance of 60 microns within a time of 9 minutes.

The innovative solution was a totally enclosed, fully automated cell utilising three Quest model 6/42 CNC lathes fitted with GE Fanuc 18i CNC controls and Eppinger Preciflex driven tool turrets and ‘C’ axis spindle control, plus pick-and-place robots, auto conveyors along with laser component recognition and measurement

More details >>> VIDEO >>> PDF


10th September 2008
Weir Minerals again turn to HNC!

A little over 12 months ago, Tony Locke, operations director of Weir Minerals in Todmorden, West Yorkshire turned to HNC to rebuild and retrofit a CNC system to a manual Giddings & Lewis vertical turning lathe they had sourced in the USA. 

The build was duly completed and the company have been extremely pleased with result, relieving the forecast demand in their impeller cell. It therefore came as something of a pleasant surprise to HNC’s managing director Mike Diskin when Tony Locke recently came on the phone asking “Mike, I’m considering the purchase of a VTL that is in need of rebuilding and a CNC system retrofitting, can you go and look at it?” Mike advised he would be delighted, although Tony Locke added “it’s in Buffalo, New York!”

Although the rebuilt G&L was coping admirably with the work, additional orders had produced yet further demand, dictating another expansion of the impeller cell.

Paul Anderson, HNC’s engineering manager was quickly despatched to view the potential purchase. The machine, a Bullard VTL with a 66” (1676mm) diameter table but was without its turret - although one had been located albeit from a later model. Paul reckoned with a little design work, a new slide could be manufacturedutilising the later turret and advised Weir Minerals accordingly.Photo: Weir VTL

The machine was subsequently purchased and within a few weeks it arrived at HNC’s facility on the outskirts of Halifax, where the strip down began. Following the comprehensive rebuild, upon completion and final testing, Weir Mineral personnel were invited in to witness cutting trials and machine pass-off. The machine has recently been delivered and commissioned, coping with demand in the impeller cell – at least for the time being! 


More details >>> PDF


1st July 2008Sharon Normanton
HNC trade-in Miss Moneypenny for younger model!

Everyone at HNC are pleased to introduce Sharon Normanton as Office Manager who has taken over from the recently retired Denise Johnson.

Sharon is rapidly settling in at HNC and has introduced several changes to the office system to ensure everything from sales orders to invoicing is completed on time.

We wish Denise great happiness and success in her retirement and welcome Sharon to the team.


19th May 2008
HNC hits million pound six!

Tim & MikeAfter many months of negotiation Halifax Numerical Controls (HNC) directors Mike Diskin and Tim Price are proud to announce their biggest ever order – for six machines to the value of £982,000.00! ($1,912,000.00)

Against fierce international competition from companies in the USA, Sweden and Holland, HNC have been awarded a contract to rebuild and retrofit new CNC controllers to six large machine tools from American aero engine maker Pratt and Whitney. Says HNC Managing Director Mike Diskin, “it has been something of a tense time for us over the past couple of months, we knew it was going to be tough, but we won through in the end.” He added “we believe we won the order because of our reputation for service and the quality we build into all re-manufactured machines, combined with our vast in-house CNC knowledge and competitive pricing.”

Pratt and Whitney, who were looking for machines for a new venture in China, initially looked at new but considered good quality rebuilt ones better value. They bought the assets of the now defunct Volvo aero engine maintenance factory in Stockholm, Sweden which included a number of quality machine tools, consisting of two Dorries and one Schiess vertical turning lathe, a VAES vertical grinder, a Union five axis horizontal borer and Deckel FP6 machining centre – although all had seen better days.

Having secured the machines they next went looking for a company capable of refurbishing them and scoured Europe and the US for specialist re-manufacturing companies, with HNC coming out on top!

All machines will have, new electrics fitted throughout and be retrofitted with the latest GE-Fanuc Oi controllers, servos and drives. Delivery of the machines to HNC’s spacious Halifax facility took place within days of the order being placed with work already begun. It is a tight schedule with delivery required by November 2008.

Upon completion HNC will fully test, export pack and dispatch the machines to Pratt and Whitney’s new Chinese joint venture company - Pratt and Whitney Shanghai Aircraft Engine Maintenance Co Ltd, to be followed by HNC personnel who in will install and commission.

Friday 25th April 2008
Whitgift School count on Heidenhain

Although Halifax Numerical Controls Ltd (HNC) is considered one of the UK’s leading machine tool re-furbishers and CNC control retrofitters, MD Mike Diskin, is keen to point out they are also one of Britain’s largest distributors of digital readout (DRO) systems and have enjoyed a long association with Heidenhain promoting their advanced range of products, enjoying sole distribution rights for the whole of Yorkshire and Humberside.

Mick Diskin Calibrates Heidenhain DROSo when Assistant Head Teacher and Head of Technology, Paul Mortimer of Whitgift School in Grimsby approached HNC to rebuild four of the schools 30 year old lathes - two Colchester Students and two Harrison 140’s, he had clearly done his homework by specifying the powerful Heidenhain model 780 DRO units.  

The 780 is the latest in DRO technology featuring a 6” screen for easy viewing, is menu driven and extremely operator friendly. It contains many advanced features, including comprehensive tool tables, bolt hole circles, powerful maths function and even has its own inbuilt diagnostics and full error compensation.


Combined with the full machine refurbish, interlocked sliding chuck guards and lead screw covers were fitted, bringing the machines into line with current safety regulations. The machines were also treated to a new coat of paint awaiting the rigours of next 30 years of student usage!

DRO's retrofitted to Lathes