Gewefa and partners maintain product focus

Despite the postponement of MACH, toolholding specialist Gewefa UK is maintaining the momentum behind many of the products now available from both itself and its UK partners. In the UK Gewefa represents EWS, OTT-Jakob, Pibomulti, Nann, Rineck and Fahrion, all of whom have new or recently introduced products complementing its own extensive toolholding capability.

New from Gewefa are a number of variants of the hydraulic Hydro-Pin toolholder to accommodate a wide selection of boring bar shanks, many with their own location configurations. Features common to all include substantially reduced setting times – by as much as 75% - and an up to 50% increase in cutter life due to the more secure, vibration-free grip. In all formats, a key feature of the design is the need to eliminate run out with a guaranteed centre height at the insert tip being essential for successful high precision machining. There is also guaranteed repeatability when changing like-for-like bars and a simple, fool proof fitting process.

Being a hydraulic chuck, Hydro-Pin removes the need for reduction sleeves when securing the bar, guaranteeing anti-vibration damping and
reducing the opportunities for inaccuracy and bar deflection during the boring process.

Gewefa’s Hydro-Pin boring bar toolfolder.

Gewefa’s Hydro-Pin boring bar toolholder

From driven tool specialist EWS will be a focus on the Varia quick change toolholding system. With Varia, spindle tooling can be changed
in as little as 20 seconds and the ability to pre-set sister tooling off the machine further enhances productivity. With the single clamping point
the securing of tools is achieved without any radial force.

EWS Varia quick change system.

EWS Varia quick change system

German spindle specialist OTT-Jakob is acclaimed for its PowerCheck spindle monitoring system alongside the range of its recently introduced rotary unions.

PowerCheck is a highly adaptable component that can be used as a portable service tool or, in larger machine shops, can be permanently located (exactly as a toolholder) in the carousel to supply on-going data on spindle condition.

The connection to the hand held data collector is wireless so an operator can monitor information collected at the machine from up to eight
different machine locations. Over 8,000 readings can be stored on the handset with these easily downloaded to a USB for transfer to a lap top or network computer system.

OTT-Jakob’s PowerCheck in situ in the machine spindle

OTT-Jakob’s PowerCheck in situ in the machine spindle

Swiss speeder and angle head specialist Pibomulti has a further addition to its Rainbow range of angle heads. The latest head is able to clamp up to a Ø12mm tool shank via a Gewefa hydraulic clamping system which also eliminates the use of reduction sockets.

Also featured is a fully mechanical 360° orientation head which is particularly suited for use in a Makino Mag1 tool changer due to its compact size. Able to index at any orientation, the air input is through the centre of the input shaft (to actuate the 360° pneumatic system).

The newest addition to Gewefa’s partner portfolio is Fahrion with Gewefa exclusively representing products from the Fahrion Precision Centro P Premium range of collet chucks.

Gewefa is supporting three products from Premium programme – Ultra Power Chucks, Dynamic Performance Chucks and Mini Precision Chucks.

The Ultra Power Chucks (UPC) are designed to optimise material removal rates on high-performance machines with high rigidity and drive power.

The Dynamic Performance Chucks (DPC) are designed for machines with less stability and drive power, but usually with higher spindle and axis speed. DPC is ideal for trimming, finishing and roughing with all processing tasks able to be performed using the same chuck.

Finally, the Mini Precision Chucks (MPC) are designed for use with high speed spindles or for operating in tight spaces.

Collet specialist Nann has its latest MSK manually operated collet chucks which are universal and can be used for both external and
internal clamping while the latest spindle unit range are for use with draw-back collets, dead length collets and expanding collets.

Completing the picture from Gewefa, specialist toolholding and heat shrink clamping expert Rineck will be featuring a range of its Capto toolholders and threaded adaptors.

Gewefa strengthens sales support team

Stuart Sneddon

Toolholding specialist Gewefa UK Limited has expanded its sales support team with the appointment of Stuart Sneddon (34) as its Sales Co-ordinator.

The Corsham based company offers the extensive Gewefa range of standard and special toolholders as well as those of its UK partners EWS, OTT-Jakob, Pibomulti, Nann and Rineck. Stuart has a background in medical engineering and more recently in bio- decontamination and clean room technology. In Gewefa he will offer the sales support function dealing with and preparing quotations, delivery scheduling and customer liaison. In his spare time Stuart enjoys watching ice hockey, live music and walking.

Gewefa UK now offering Fahrion Centro P Premium range of collet chucks

Gewefa UK Limited, the Corsham based supplier of toolholders and tool holding accessories is expanding its partner portfolio with the addition of products from the Fahrion Precision Centro P Premium range of collet chucks.

Gewefa UK will concentrate on sales and support for three key products from the Premium programme – Ultra Power Chucks, Dynamic Performance Chucks and Mini Precision Chucks.

The standard Centro P collet chuck system is widely available with features integral to all Fahrion systems including the tried-and-tested Fahrion ‘Protect’ coating on the collets. However, features of the Premium specialist programme create new application areas and opportunities.

The Ultra Power Chucks (UPC) are designed to optimise material removal rates on high-performance machines with high rigidity and drive power. Radial rigidity, compact length and mechanical pull-out protection produce a holding torque of 1,000 Nm.

The very high clamping force usually requires rigid connections which in turn results in the creation and propagation of vibration. Micro creeping also sets in earlier here. If the connection is less rigid but has a higher damping rate, much better results can be achieved.

With Centro P Premium UPC chucks good damping rates are achieved and micro creeping is eliminated by positive locking.

The Dynamic Performance Chucks (DPC) are designed for machines with less stability and drive power, but usually with higher spindle and axis speed. DPC is ideal for trimming, finishing and roughing with all processing tasks able to be performed using the same chuck.

User features include high removal rates on machines with contemporary milling strategies, making them ideal for applications in tool and mould manufacture, automotive and supply industries and upscale components and subcontractors.

Finally, the Mini Precision Chucks (MPC) are designed for use with high speed spindles or for operating in tight spaces.

MPC chucks feature smaller clamping diameters for high spindle speeds and frequently, very slim outer contours for deep immersion/pocketing in cavities requiring very stable tool clamping.

Now available in the UK from Gewefa, this Fahrion Centro P Dynamic Performance collet chuck offers a high precision alternative to conventional chucks when run at high spindle speeds.

To discuss individual requirements contact the sales team at Gewefa on 01225 811666, or email sales@gewefa.co.uk.

Gewefa on the road in support of autumn Open Houses.

Corsham based toolholding specialist Gewefa UK has been supporting a number of leading machine tool manufacturers during this busy autumn season of Open Houses and has announced a further two events before the year end.

In close collaboration with its driven tool specialist partner EWS, Gewefa will be have a strong presence at the forthcoming Romi Machines UK Ltd ‘Blue Circle’ event being held in Rugby on November 13th and 14th.

It is planned that EWS driven tools will feature on a Romi CNC lathe and visitors will also be able to view and discuss the newly introduced EWS intelligent tool monitoring technique called CyberCon4. This monitors a range of processes within the tool in order to optimise its performance.
In December, Gewefa will have a significant presence at the 2 day Hurco Open House being held in the machine tool builders’ impressive new demonstration and showroom facility in High Wycombe.

Scheduled for December 3rd and 4th, Gewefa will be exhibiting in the Suppliers Village at the Open House and this year will be highlighting - among other products - its expertise as a supplier of face and taper toolholding products. Gewefa’s range of standard toolholders in this format has been extended by over 50% following the introduction of many new extended length tools.

With its long standing relationship with Hurco in the UK, Gewefa is the primary supplier of tooling packages supplied on new Hurco machine tools and a number of demonstrations at the event will prominently feature Gewefa spindle nose tooling in various formats.

As well as EWS, Gewefa also supplies related toolholding products such as OTT spindle monitoring equipment, Pibomulti angle heads and speeders, Nann collets and Rineck heat shrink clamping machines.

To discuss individual requirements contact the sales team at Gewefa on 01225 811666, or email sales@gewefa.co.uk.

Gewefa expands programme of face and taper toolholders by 50% with addition of new extended length variants.

M96+ERCorsham based toolholding specialist Gewefa UK has further expanded its programme of standard face and taper toolholders by 50% following the addition of a range of extended length holders that greatly increase the areas of application.

The Gewefa family of face and taper toolholders is among the most extensive available and now covers BT and DIN formats in SK30, 40 and 50 tapers to offer comprehensive application capability. The new length variants cover all formats including collet chucks, shell mills, face mills, shrink clamp and hydraulic chucks in standard or adaptor formats.

With face and taper, the crucial face and taper contact surfaces are precision ground to produce an exceptionally rigid tool/spindle surface contact while also optimising the clamping properties.

This creates conditions for improved cutter life, better maintained accuracy and cutting capability – all features that impact positively on high speed and heavy duty machining processes.

Gewefa has a long history as a manufacturer of face and taper tooling and as long ago as the mid 1970’s it was manufacturing toolholders in this format for machines using Waldrich Coburg, Werner and Pfleiderer and Ingersoll spindles.

Subsequently it developed its own comprehensive range which is completely interchangeable with other proprietary systems.

As Gewefa UK managing director Keith Warner explains, “being an independent supplier, our toolholders are fully inter changeable with other systems giving the user the widest range of applications.

“In the overall scenario of toolholding, face and taper is increasingly popular in heavy duty and high speed applications. The enhanced surface contact with the chuck has direct knock on advantages in precision, rigidity and maintaining accuracy.

To discuss individual requirements contact the sales team at Gewefa on 01225 811666, or email sales@gewefa.co.uk.


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