Manufacturing Machinery World April 2020

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NEWS NEWS NEWSGEWEFA ANDITS PARTNERSMAINTAINPRODUCTFOCUSDespite the postponement of MACH,toolholding specialist Gewefa UK ismaintaining the momentum behind many ofthe products now available from both itselfand its UK partners.In the UK Gewefa represents EWS, OTT-Jakob, Pibomulti, Nann, Rineck and Fahrion,all of whom have new or recently introducedproducts complementing its own extensivetoolholding capability.New from Gewefa are a number ofvariants of the hydraulic Hydro-Pintoolholder to accommodate a wide selectionof boring bar shanks, many with their ownlocation configurations. Features common toall include substantially reduced settingtimes – 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 designis the need to eliminate run out with aguaranteed centre height at the insert tipbeing essential for successful high precisionmachining. There is also guaranteedrepeatability when changing like-for-likebars and a simple, fool proof fitting process.Being a hydraulic chuck, Hydro-Pinremoves the need for reduction sleeves whensecuring the bar, guaranteeing anti-vibrationdamping and reducing the opportunities forinaccuracy and bar deflection during theboring process.From driven tool specialist EWS will be afocus on the Varia quick change toolholdingsystem. With Varia, spindle tooling can bechanged in as little as 20 seconds and theability to pre-set sister tooling off themachine further enhances productivity.With the single clamping point the securingof tools is achieved without any radial force.German spindle specialist OTT-Jakob isacclaimed for its PowerCheck spindlemonitoring system alongside the range of itsrecently introduced rotary unions.PowerCheck is a highly adaptablecomponent that can be used as a portableservice tool or, in larger machine shops, canbe permanently located (exactly as atoolholder) in the carousel to supply ongoingdata on spindle condition.The connection to the hand held datacollector is wireless so an operator canmonitor information collected at the machinefrom up to eight different machine locations.Over 8,000 readings can be stored on thehandset with these easily downloaded to aUSB for transfer to a lap top or networkcomputer system.Swiss speeder and angle head specialistPibomulti has a further addition to itsRainbow range of angle heads. The latesthead is able to clamp up to a Ø12mm toolshank via a Gewefa hydraulic clampingsystem which also eliminates the use ofreduction sockets.Also featured is a fully mechanical 360°orientation head which is particularly suitedfor use in a Makino Mag1 tool changer due toits compact size. Able to index at anyorientation, the air input is through thecentre of the input shaft (to actuate the 360°pneumatic system).The newest addition to Gewefa’s partnerportfolio is Fahrion with Gewefa exclusivelyrepresenting products from the FahrionPrecision Centro P Premium range of colletchucks.Gewefa is supporting three products fromthe Premium programme – Ultra PowerChucks, Dynamic Performance Chucks andMini Precision Chucks.The Ultra Power Chucks (UPC) aredesigned to optimise material removal rateson high-performance machines with highrigidity and drive power.The Dynamic Performance Chucks (DPC)are designed for machines with less stabilityand drive power, but usually with higherspindle and axis speed. DPC is ideal fortrimming, finishing and roughing with allprocessing tasks able to be performed usingthe same chuck.Finally, the Mini Precision Chucks (MPC)are designed for use with high speedspindles or for operating in tight spaces.Collet specialist Nann has its latest MSKmanually operated collet chucks which areuniversal and can be used for both externaland internal clamping while the latestspindle unit range are for use with drawbackcollets, dead length collets andexpanding collets.Completing the picture from Gewefa’sSpring reprise, specialist toolholding andheat shrink clamping expert Rineck will befeaturing a range of its Capto toolholders andthreaded adaptors.01225 811666sales@gewefa.co.uk6 Manufacturing Machinery World, April 2020
QUALITYMILLINGMACHINES‘Always Excel’Colliery Lane, Exhall, Coventry, United Kingdom . CV7 9NWwww.excelmachinetools.co.uksales@excelmachinetools.co.ukTel: +44 (0)24 7636 5255/excelmachinetools/AlwaysExcelUK PARTNERS FOR GERMAN STURMER GROUP
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Manufacturing Machinery World April 2020

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