Face-and-taper tool-holders

Posted on 28 Dec 2018 and read 645 times
Face-and-taper tool-holders The family of face-and-taper tool-holders from Corsham-based Gewefa UK Ltd (www.gewefa.co.uk) now covers BT and DIN formats in SK30, 40 and 50 tapers.

Designed for heavy-duty and very-high-speed machining applications, these tool-holders are available as collet chucks, shell mills, face mills, shrink-clamp units and hydraulic chucks, as well as in extended length and adapter formats.

Gewefa says that machining using face-and-taper tool-holding technology comes into its own in metal-cutting applications where high side-thrust loadings are a possibility.

“In such circumstances, the rigidity of the spindle/tool-holder connection can ensure longer insert life.

“This type of tool-holder also offers sustained precision and resistance to deflection when machining using extended-length or overhanging tools — and in processes such as deep pocketing or deep-hole boring.”

These tool-holders offer two mating surfaces — the gauge line (taper) surface and the flange face surface; and because both contact surfaces between the tool-holder and the spindle are precision-ground, when the drawbar is activated, the dual contact creates a “rigid contact environment that is resistant to vibration and deflection”.

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