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Toolholding


guaranteeing quality machining results.” It isn’t just coming up with a new VDI toolholder, but it sure helps when tooling suppliers are developing innovative product approaches to deal with some of the industry’s real challenges today. They include guarding against pullout with quick-change tooling, especially in machining the toughest titaniums and high- temperature alloys, building rigidity into modular tooling, and maximizing use of the available machine envelope,


Delivering Cutting Tool Accuracy and Superior TIR Bilz Tool Co. Inc. (Lombard, IL) offers a full slate of new products that are aimed at delivering quality, accuracy, and superior TIR for challenging machining applications. “Our prin- cipal focus is on the centerline of the toolholder for improved cutting tool accuracy, cutting tool rigidity in medium to heavy radial loads, and increasing metal removal rates while increas- ing tool life,” said Tim Fara, managing director. “Development of the patented TER ThermoGrip ER shrink collet by Bilz is intended to revolutionize the use of collets and collet chucks in


Bilz Tool’s TER ThermoGrip shrink-fit collet can be used for all ER live tools and ER straight shank holders in Swiss machines.


the production process,” said Fara. “TER ThermoGrip col- lets have solid bodies, unlike common slotted ER-style collets and aren’t deformed or compressed when clamping, assuring runout of less than 3 µm and significantly improving cutting tool performance when machining tough materials like titanium.” Tool change in Swiss-style machines and live tools when holding a cutting tool in a flexible collet can be very time- consuming. Downtime can be extensive and costly due to the tight tool locations in most Swiss-style machining centers and the need to disassemble and reassemble cutting tool, collet, and collet nut on live tools. Bilz’s TER ThermoGrip shrink-fit collet can be used for all ER live tools and ER straight shank holders in Swiss machines. During the shrink-fit process the cutting tool can be preset to required tool length in the collet. All this happens outside of the machine, while the machine continues to make parts. A tool change only takes seconds and the machine is back up and running with single assem- bly tools back in the machine in the same tool location, gage length, and no concern that tool point location has moved or over torqueing of the collet nut.


58 ManufacturingEngineeringMedia.com | November 2014


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